ERomulator User s Manual

Transcription

1 PRELIMINARY DRAFT Used with the CS98XXX, CS78XX, and CS7410 Target Devices Product Information This document contains information for a new product. Cirrus Logic reserves the right to modify this product without notice. MAY 03 DS525UMA2 - Rev 2.0 May

2 Contacting Cirrus Logic Support For all product questions and inquiries contact a Cirrus Logic Sales Representative. To find one nearest you go to IMPORTANT NOTICE Cirrus Logic, Inc. and its subsidiaries ("Cirrus") believe that the information contained in this document is accurate and relia ble. However, the information is subject to change without notice and is provided "AS IS" without warranty of any kind (express or implied). Customers are advised to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgment, including those pertaining to warranty, patent infringement, and limitation of liability. No responsibility is assumed by Cirrus for the use of this information, including use of this information as the basis for manufacture or sale of any items, or for infringement of patents or other rights of third parties. This document is the property of Cirrus and by furnishing this information, Cirrus grants no license, express or implied under any patents, mask work rights, copyrights, trademarks, trade secrets or other intellectual property rights. Cirrus owns the copyrights associated with the information contained herein and gives consent for copies to be made of the information only for use within your organization with respect to Cirrus integrated circuit s or other products of Cirrus. This consent does not extend to other copying such as copying for general distribution, advertising or promotional purposes, or for creating any work for resale. An export permit needs to be obtained from the competent authorities of the Japanese Government if any of the products or techno logies described in this material and controlled under the "Foreign Exchange and Foreign Trade Law" is to be exported or taken out of Japan. An export license and /or quota needs to be obtained from the competent authorities of the Chinese Government if any of the products or technologies described in this material is subject to the PRC Foreign Trade Law and is to be exported or taken out of the PRC. CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF DEATH, PERSONAL INJURY, OR SEVERE PROP- ERTY OR ENVIRONMENTAL DAMAGE ("CRITICAL APPLICATIONS"). CIRRUS PRODUCTS ARE NOT DESIGNED, AUTHORIZED OR WARRANTED FOR USE IN AIRCRAFT SYSTEMS, MILITARY APPLICATIONS, PRODUCTS SURGICALLY IMPLANTED INTO THE BODY, LIFE SUPPORT PRODUCTS OR OTHER CRIT- ICAL APPLICATIONS (INCLUDING MEDICAL DEVICES, AIRCRAFT SYSTEMS OR COMPONENTS AND PERSONAL OR AUTOMOTIVE SAFETY OR SECURITY DEVICES). INCLUSION OF CIRRUS PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO BE FULLY AT THE CUSTOMER'S RISK AND CIRRUS DIS- CLAIMS AND MAKES NO WARRANTY, EXPRESS, STATUTORY OR IMPLIED, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FIT- NESS FOR PARTICULAR PURPOSE, WITH REGARD TO ANY CIRRUS PRODUCT THAT IS USED IN SUCH A MANNER. IF THE CUSTOMER OR CUSTOMER'S CUSTOMER USES OR PERMITS THE USE OF CIRRUS PRODUCTS IN CRITICAL APPLICATIONS, CUSTOMER AGREES, BY SUCH USE, TO FULLY INDEM- NIFY CIRRUS, ITS OFFICERS, DIRECTORS, EMPLOYEES, DISTRIBUTORS AND OTHER AGENTS FROM ANY AND ALL LIABILITY, INCLUDING ATTORNEYS' FEES AND COSTS, THAT MAY RESULT FROM OR ARISE IN CONNECTION WITH THESE USES. Cirrus Logic, Cirrus, and the Cirrus Logic logo designs are trademarks of Cirrus Logic, Inc. All other brand and product names in this document may be trademarks or service marks of their respective owners. I 2 C is a registered trademark of Philips Semiconductor. Purchase of I 2 C Components of Cirrus Logic, Inc., or one of its sublicensed Associated Companies conveys a license under the Philips I 2 C Patent Rights to use those components in a standard I 2 C system. Microsoft, Windows, and WindowsNT are registered trademarks of Microsoft Corporation. - Rev 2.0 May ii

3 Table of Contents Table of Contents 1. Overview Getting Started Hardware Setup Network Setup Pop-Up Menu Options File Menu File Download Binary File to ERomulator SRAM File Download Binary File to Target FLASH File Connect File Disconnect File Exit Target Actions Menu Target Actions Reset Target Target Actions Halt Target Target Actions Run Target from FLASH ERomulator Options Menu ERomulator Options Set Network Parameters ERomulator Options Select Target Target FLASH Target Flash Select Help Help.. Contents Help.. About Programs Windows and Indicators TCP/IP and Target State Indicators RISC0, RISC1, DSP, and Extra Tabs Memory/Misc Tab Dump DRAM Memory Modify DRAM Memory Fill DRAM Memory DRAM Range Dump DRAM Range Next Dump Register Modify Register Dump NVRAM Memory I 2 C Read/Write Dump Internal SRAM Modify Internal SRAM Fill Internal SRAM Reprogramming FLASH Anatomy of the Flash.ini File SST - 4 Bus Cycles for a Word Program ST - 4 Bus Cycles for a Word Program iii May 29, Rev. 2.0

4 List of Figures List of Figures Figure 1. ERomulator Interface Main Window - Before Connection... 3 Figure 2. ERomulator Network Settings Dialog Box... 3 Figure 3. ERomulator Interface Main Window - Connected... 4 Figure 4. About Dialog... 4 Figure 5. File Option on ERomulator Interface... 5 Figure 6. Download Binary Files Option Window... 6 Figure 7. Enter Base Address Dialog Box... 6 Figure 8. Select Files to Add for Download to SRAM... 7 Figure 9. ERomulator Network Settings Dialog Box... 9 Figure 10. Select Target Dialog Box Figure 11. Select Target Flash Dialog Box Figure 12. About Dialog Figure 13. TCP/IP and Target State Indicators Figure 14. Sample Debugging Message (This message seen from ERomulator SRAM only.) Figure 15. Sample Results from Memory/Misc Tab Figure 16. Dump DRAM Memory Dialog Box Figure 17. Change DRAM Memory Value Dialog Box Figure 18. Fill a Block of DRAM Dialog Box Figure 19. DRAM Range Dump Dialog...16 Figure 20. Dump Registers Dialog Box Figure 21. Change Register Value Dialog Box Figure 22. Dump NVRAM Memory Dialog Box Figure 23. I2C Read/Write Dialog Box Figure 24. Dump Internal SRAM Dialog Figure 25. Choose Binary Files Dialog Figure 26. Base Address Dialog iv May 29, Rev. 2.0

5 List of Tables List of Tables Table 1. Jumper Settings for J4 Pins on the ERomulator Pod... 2 v - Rev 2.0 May 29,

6 1-1. Overview The EInterface application is used with the Cirrus Logic ERomulator to develop software for the Cirrus Logic CS98XXX, CS74XX, and CS78XX product families. The ERomulator contains 4 Mb x16 of SRAM which can replace the target's FLASH memory during code development. The ERomulator also provides the capability to download binary files (*.bin) to target FLASH to create a standalone system. In addition, the user can write to and read from the target devices memory locations and registers. I 2 C communications from the ERomulator to any I 2 C device on the target system is also supported. The ERomulator runs on Microsoft Windows 98, Windows2000, and WindowsNT. Note: Development boards for the CS78XX product families do not yet exist. ERomulator connectivity will be included on any new CS78XX board that is created. 2. Getting Started The ERomulator needs an IP address. The IP Address, as well as the Subnet Mask and Gateway addresses, can be provided by the network administrator of your organization s network. The IP Address assigned to the ERomulator must be unique and not assigned anywhere else on your organization s network, including your PC. 2.1 Hardware Setup Follow these steps to set up the ERomulator hardware: 1. Apply power to the ERomulator using the supplied 5 VDC power supply. The user should see the Power LED on the front panel of the ERomulator illuminate. The network connection LED will not light up until the EInterface application successfully establishes a TCP/IP connection with the ERomulator. 2. Connect the RS232 serial cable to one of the serial ports on your PC (any open serial port COM1-4 will work, as the application will auto-detect), and the other end to the RS-232 Configuration Port on the ERomulator. 3. Make the LAN connection with the ERomulator. At this time, the green connect LED (on the LAN connection port) should light, and the yellow activity LED (also on the - Rev 2.0 May

7 LAN connection port) should flash occasionally. The ERomulator LAN connection may be made through a hub (using a normal Ethernet cable) or directly from the network card in your PC to the ERomulator (using a crossover Ethernet cable) 4. Connect the ERomulator Pod to the 60-pin connector on the target and also connect the I 2 C cable to the 3 or 10-pin I 2 C connector on the target board. (See the User s Manual for the target board for connector locations.) 5. Set the J4 Jumper settings on the ERomulator Pod for your target type shown in Table 1. Table 1. Jumper Settings for J4 Pins on the ERomulator Pod Target Type Chip select on pin 57 CS98000 Series CS98100 Series CS7410 Series CS7808 Series Chip select on pin 58 CS98200 Series CS98120 Series CS7828 Series Pins to Jumper 1, 2 1, 2 1, 2 1, 2 2, 3 2, 3 2,3 2.2 Network Setup Setup of the ERomulator is straightforward. Before the ERomulator can be used, the user must download network parameters as described in Steps 1 to 4 below. This is accomplished by using the RS-232 serial cable and EInterface Program (both supplied). The RS-232 cable is no longer needed after the user downloads the network parameters but will be needed anytime the user wants to change the ERomulator IP address. 1. Start the EInterface application. The main ERomulator application window now opens. (See Figure 1.)The ERomulator should come with a pre-loaded IP address, whose value is marked on the ERomulator itself. If the user needs to change this value, the user should do it before he or she tries to connect to the network using the CONNECT button. - Rev 2.0 May

8 Figure 1. ERomulator Interface Main Window - Before Connection 2. Select the ERomulator options and then click Set Network Parameters. The preprogrammed address should be displayed. (See Figure 2.) Figure 2. ERomulator Network Settings Dialog Box 3. Fill in the appropriate values and click the Save Button. Clicking the Save button stores the values in non-volatile memory in the ERomulator and in ERomulator.ini for use by the EInterface program. This procedure should be used anytime the ERomulator IP address needs to be changed. 3 May 29, Rev 2.0

9 When you click the Save Button in the Network Settings Dialog Box, the ERomulator should try to auto-connect using the new IP address. The CONNECT button on the main window should change to DISCONNECT since you are now connected. Figure 3. ERomulator Interface Main Window - Connected 4. If Connected, the Help About dialog should give version information, and list the currently connected IP address. Select Help and then click About (shown in Figure 4) to verify the new setting. Note: The green arrow, TCP/IP Active, should be lighted when you are connected. Figure 4. About Dialog - Rev 2.0 May

10 3. Pop-Up Menu Options 3.1 File Menu File Download Binary File to ERomulator SRAM Allows one or more binary (*.bin) files to be downloaded to ERomulator SRAM. After the binaries are downloaded, the target system is reset. The target will then execute from ERomulator SRAM. The shortcut key for this option is Ctrl+E. This option can be selected from the File menu as shown in Figure 5. Figure 5. File Option on ERomulator Interface 5 May 29, Rev 2.0

11 By choosing the first option under the File Menu, the window shown in Figure 6 appears. Figure 6. Download Binary Files Option Window Choose one of the following buttons. Add - Brings up a standard open file dialog to choose binary files. After a file is chosen, this dialog shown in Figure 7 appears. Figure 7. Enter Base Address Dialog Box The Base Address dialog allows the binary file to be located at any address in ERomulator SRAM. Note that all addresses are byte (i.e., 8-bit) addresses. The addresses entered are actually offsets from the RISC processor s reset boot vector. The base addresses must be on 4-byte boundaries, and if entered on other than 4 byte boundaries will be forced to 4-byte boundaries (by setting the two low bits to 0) by the application. The default address value is 0x , which is the reset boot location offset. The only reason to locate a binary at another location would be if you are using support files (such as bitmap files) that are not part of the main binary. Any support files would be added to the list with the Add button (See Figure 8, and the appropriate hex address given for the location of the support file. The order in which files are added to the - Rev 2.0 May

12 list is not significant, as they will be loaded in the ERomulator SRAM at the location provided by the user. Figure 8. Select Files to Add for Download to SRAM Change - Allows the Base Address for the selected binary file to be changed. Delete - Removes the selected binary file from the list. The Delete button is only enabled if one or more files exist in the list. Clear All - Clears all binary files in the list. OK - Begins the download process of all the binary files in the list. After downloading is complete, the target will be reset and commence running from ERomulator SRAM. Cancel - Abort the ERomulator download File Download Binary File to Target FLASH Allows one or more binary files to be programmed into target FLASH memory. The process is almost identical to downloading to ERomulator SRAM. The only exception is that Base Address locations for FLASH download are constrained by the actual block organization of the particular FLASH memory used. As such, you can only choose Base Addresses from the drop down list in the Base Address dialog box. These locations represent the beginning location of all blocks available in the target's FLASH. After the FLASH is programmed, you may execute the program just downloaded by selecting the Target Actions/Run Target from FLASH (Ctrl+F). The shortcut key for FLASH download is Ctrl+T. For more detail, see Reprogramming FLASH on page May 29, Rev 2.0

13 3.1.3 File Connect File Disconnect File Exit Allows the user to Connect to the network IP connection. The process is identical to Clicking on the CONNECT button on the main screen. If already Connected, the File Connect option is not available, and the CONNECT/DISCONNECT button will display DISCONNECT. Allows the user to Disconnect from the network IP connection, but leaves the EInterface program running. The process is identical to Clicking on the DISCONNECT button on the main screen. The shortcut key is Ctrl+Y. Allows the user to Exit from the EInterface program. This action also disconnects the network IP connection. The shortcut key is AlT+F Target Actions Menu Target Actions Reset Target Brings the target reset line low for 100 ms and then allows it to go high again. The shortcut key for this option is Ctrl+R Target Actions Halt Target Brings the target reset line low and holds it there. All target activity is halted. The shortcut key for this option is Ctrl+H Target Actions Run Target from FLASH Three-states the address and data drivers from the target to the ERomulator, brings the target reset line low for 100 ms and then allows it to go high again. Important Note:The FLASH Chip Enable jumper (J1 on the CDB98000 Evaluation board and J3 on the CDB7410-4) must be in place to run the target from FLASH. Consult the appropriate manuals for information on jumper settings on other boards The shortcut key for this option is Ctrl+F. - Rev 2.0 May

14 3.3 ERomulator Options Menu ERomulator Options Set Network Parameters Figure 9 shows the Set Network Parameters dialog that allows network parameters to be stored in the ERomulator: Figure 9. ERomulator Network Settings Dialog Box The ERomulator IP Address can be assigned by your network administrator, and the Subnet Mask and Gateway address can also be provided by the network administrator. It's important to be sure the ERomulator IP Address chosen does not already exist on your network. Once these values are entered and the Save button is clicked, they will be downloaded to the ERomulator and stored in non-volatile memory. These values are also saved for use by the EInterface program. The shortcut key for SetNetwork Parameters is Ctrl+S ERomulator Options Select Target Note: The values shown in the dialog above are simply examples, and the values you use will be dependant on your particular network setup. Figure 10 shows Select Target dialog that allows Target parameters to be stored in the ERomulator: The ERomulator can communicate through I 2 C to different Target boards using different Bus Widths. A drop down list allows you to change the Target type that you are connected to. The default is CS Other targets are available also. The drop down list is populated by reading the eromulator.ini configuration file. New Targets can be added to this file as the need arises. See the comments within the eromulator.ini file for details about adding new Targets to the configuration. If a new Target is chosen, click OK to retain the selection. Click CANCEL to leave the dialog without sending new target info to the ERomulator. 9 May 29, Rev 2.0

15 Figure 10. Select Target Dialog Box 3.4 Target FLASH Target Flash Select This function allows you to specify the FLASH memory found on your target. Selecting a FLASH memory from the combo box and clicking the OK button exits the dialog and reads the file target.ini in the EInterface directory. Clicking the Cancel button exits the dialog without reading target.ini. The combo box in the Target Flash dialog is loaded from the contents of flash.ini. Therefore, if you add a new FLASH definition to flash.ini while EInterface is open, you'll need to re-start EInterface so that it will read the updated flash.ini file. The shortcut key for selecting Target Flash is CTRL+G. Figure 11. Select Target Flash Dialog Box - Rev 2.0 May

16 3.5 Help Help.. Contents Help.. About This function allows you to bring up the Help Menu system for Help on EInterface functions. The shortcut key for Contents is CTRL+N. This function allows you to bring up information concerning the EInterface software version, the Eromulator software version, the Network IP Address, and Copyright information. The shortcut key for About is CTRL+A. Figure 12. About Dialog 4. Programs Windows and Indicators 4.1 TCP/IP and Target State Indicators EInterface has two indicators, one of which reflects the TCP/IP connection status and the other which reflects the Target State and Memory operation. Figure 13 shows the indicators. The TCP/IP indicator will be lighted whenever there is an active TCP/IP connection between EInterface and the ERomulator. When the target is operating from ERomulator SRAM, the TCP/IP arrow will flash yellow to indicate the reception of debug information from the target. The Target State and Memory operation will be lighted when the target is out of reset and unlighted when the target is in reset state. The memory operation indicates whether the target is currently connected to ERomulator SRAM or target FLASH for booting and operation. 11 May 29, Rev 2.0

17 Figure 13. TCP/IP and Target State Indicators 4.2 RISC0, RISC1, DSP, and Extra Tabs Figure 14 shows an example of a debugging message from RISC0. Figure 14. Sample Debugging Message (This message seen from ERomulator SRAM only.) The first four tabs in the dialog in the lower portion of EInterface display debug information passed from the target using the ERomPrintFunc() functions. See the following code sample below for an example of code to include in your target build to display debug messages to the Debug Tab Windows: #include "eromdbg.h" // for debug print messages must include this... #define DEBUG_OUT(fmt, args...) { ERomPrintFunc (0, fmt, ## args); } // the first argument is the number of the Debug window, in this example, 0 is the RISC0 window (1 would be RISC1, 2 = DSP, 3 = EXTRA) - Rev 2.0 May

18 //define output with a macro, so later you can easily remove debug messages from the build by commenting out like in the following line #define DEBUG_OUT(fmt, args...) //{ ERomPrintFunc (0, fmt, ## args); }... DEBUG_OUT("Nav:Unrecognized message, %d\n",cmd); // dump your debug info to the debug windows... These functions are part of the object code package shipped with the ERomulator. Realtime debug information can be output from the target board and displayed in these windows. Each of the two RISC processors, as well as the DSP, has a dedicated window so that debug messages generated by code on each processor can be displayed. The Extra window is available if any of the processors need to provide certain debug information to a common window. Each window has four buttons. The Freeze/Unfreeze Button toggles window updating so that information in the window may be reviewed. Target information is still captured even when the window is frozen, and will be displayed when the window is unfrozen. The Save To File button will dump all text in the current window to a file you specify. The Print Display button sends the current window text to the default printer. The Clear Display button erases all text from the current window. 4.3 Memory/Misc Tab The Memory/Misc tab allows a target SDRAM, registers, and ERomulator SRAM (or target FLASH) to be dumped and manipulated. For these Memory/Register manipulation buttons, there are some shortcut keys provided. The shortcut key for a button is the ALT key plus the underlined letter on the Button Label. (For example, the shortcut for Dump DRAM Memory button would be ALT+D). See some sample results in Figure 15 on page 14. In addition, I 2 C Read/Write is addressable to any I 2 C device on the target from the ERomulator. 13 May 29, Rev 2.0

19 Figure 15. Sample Results from Memory/Misc Tab Dump DRAM Memory To dump target SDRAM memory values to the Memory/Misc tab screen, use the Dump DRAM Memory button. The dialog in Figure 16 appears. Figure 16. Dump DRAM Memory Dialog Box Fill in a hex address (on a 4-byte boundary) as the starting address for a memory dump. You may choose to dump either 4, 16, 32, 64, or 128 memory words. As you dump from different memory locations, any unique address will be added to the drop-down list box for easy recall later. - Rev 2.0 May

20 4.3.2 Modify DRAM Memory To modify memory values in target SDRAM, use the Modify DRAM Memory button. The dialog in Figure 17 appears. Figure 17. Change DRAM Memory Value Dialog Box Fill DRAM Memory Fill in a hex address to modify and the new value for the memory location. You may choose to have the value read back for verification by using the Readback after Write radio button. If you choose the no readback option, only the pre-modified value will be shown in the Memory/Misc tab screen. If you choose the readback option, both the premodified and post-modified values will be shown in the Memory/Misc tab screen. To fill a block of memory with a particular value, use the Fill DRAM Memory button. The dialog in Figure 18 appears. Figure 18. Fill a Block of DRAM Dialog Box DRAM Range Dump Fill in the hex address at which to start the block fill, the block fill value, and the number of words to fill. Note that for large block sizes, this can take a very long time! To dump target SDRAM memory values to the Memory/Misc tab screen for a specified Range, use the DRAM Range Dump button. This feature allows you to dump up to 8K 15 May 29, Rev 2.0

21 (or 0x2000 hex) at a time, where other Dump dialogs are limited to 128. The dialog in Figure 19 appears. Now enter the following information. 1. Fill in a hex address (on a 4-byte boundary) as the starting address for a memory dump. 2. Fill in a hex address (on a 4-byte boundary) as the ending address for a memory dump. As you dump from different memory locations, any unique address will be added to the drop-down list box for easy recall later. Figure 19. DRAM Range Dump Dialog DRAM Range Next Dump Register To dump target SDRAM memory values to the Memory/Misc tab screen for the next sequential Range beyond the range last used in DRAM Range Dump, use the DRAM Range Next button. No dialog will appear. The Range size will be the same size as the last DRAM Range Dump, and the Starting Address will be the same as the ending address from the previous DRAM Range Dump. Using this button allows the users to sequentially dump DRAM memory with one click. To dump target register values to the Memory/Misc tab screen, use the Dump Register Button. The dialog in Figure 20 appears. Fill in a hex address (on a 4 byte boundary) as the starting address for a register dump. You may choose to dump either 4, 16, 32, 64, or 128 register words. As you dump from different register locations, any unique address will be added to the drop-down list box for easy recall later. Figure 20. Dump Registers Dialog Box - Rev 2.0 May

22 4.3.7 Modify Register To modify target register values, use the Modify Register button. The dialog in Figure 21 appears. Figure 21. Change Register Value Dialog Box Dump NVRAM Memory Fill in a hex address to modify and the new value for the register location. You may choose to have the value read back for verification using the Readback after Write radio buttons. If you choose the no readback option, only the pre-modified value will be shown in the Memory/Misc tab screen. If you choose the readback option, both the premodified and post-modified values will be shown in the Memory/Misc tab screen. To dump either ERomulator SRAM or target FLASH memory (whichever the target is currently running from) values to the Memory/Misc tab screen, use the Dump NVRAM Memory button. The dialog in Figure 22 appears. Figure 22. Dump NVRAM Memory Dialog Box Fill in a hex address (on a 4-byte boundary) as the starting address for an NVRAM memory dump. You may choose to dump either 4, 16, 32, 64, or 128 memory words. As you dump from different memory locations, any unique address will be added to the drop-down list box for easy recall later. Check either 8-bit or 16-bit read mode. In most 17 May 29, Rev 2.0

23 4.3.9 I 2 C Read/Write cases, the 16-bit mode should be used because the target will be reading from FLASH in 16-bit mode. The exceptions to this are: The CS7410 target should always use 8-bit mode. The CS98XXX boots into 8-bit mode, so the first few bytes of the boot section are packed for reading in 8-bit mode. Selection of Bank 0 or Bank 1 has no effect when running from ERomulator SRAM, which is mapped into both banks. If the target has FLASH in both Bank 0 and Bank 1, the radio buttons under Flash/Rom Bank Select shown in Figure 22 may be used to select the desired FLASH bank. To read from or write to any I 2 C devices on the target board, use the I2C Read/Write button. The following dialog will appear: Figure 23. I 2 C Read/Write Dialog Box To write bytes to an I 2 C device, fill in the actual 7-bit I2C address (and write sub-address, if applicable). Fill in the byte values to write, up to 10 bytes, and click the Write Data button. To read bytes from an I 2 C device, fill in the actual 7-bit I2C address (and read subaddress, if applicable). Use the scroll bar to select the number of bytes to read, and click the Read Data button. The LSB bit of I 2 C address is automatically manipulated according to read and write. For example, if the I2C address is b, you can write 0x02 into the I 2 C address field. To read bytes from a Cirrus Logic I 2 C device, fill in the actual 7-bit I 2 C address. Fill the read sub-address with the desired MAP register number to read. Use the scroll bar to select the number of bytes to read, and click the Cirrus Read button. - Rev 2.0 May

24 Dump Internal SRAM To write bytes to a Cirrus Logic I 2 C device, fill in the actual 7-bit I 2 C address. Fill the write sub-address with the desired MAP register number to write. Fill in the byte values to write, up to 10 bytes, and click the Write Data button. To dump internal SRAM memory values to the Memory/Misc tab screen, use the Dump Internal SRAM button. (Note: This button was added specifically for use with the CS7410 processor, and is of no value for other target processors.) The following dialog will appear: Fill in a hex address (on a 4-byte boundary) as the starting address for a memory dump. You may choose to dump either 4, 16, 32, 64, or 128 memory words. As you dump from different memory locations, any unique address will be added to the drop-down list box for easy recall later. Figure 24. Dump Internal SRAM Dialog Modify Internal SRAM Fill Internal SRAM To modify internal SRAM memory values in the Memory/Misc tab screen, use the Modify Internal SRAM button. Refer to the section, "Modify DRAM Memory" on page 15 for the steps needed to modify internal SRAM since the procedure for modifying internal SRAM is the same procedure used in modifying DRAM. To fill internal SRAM memory values in the Memory/Misc tab screen, use the Modify Internal SRAM button. Refer to the section, "Fill DRAM Memory" on page 15 for steps needed to fill internal SRAM since the procedure for filling internal SRAM is the same procedure used in filling DRAM. 19 May 29, Rev 2.0

25 5. Reprogramming FLASH Most targets include FLASH memory that can be reprogrammed using the ERomulator. The procedure to reprogram FLASH is the same across the different target platforms, with the exception of how each Target's FLASH jumper is positioned and used. To correctly reprogram FLASH, both the Target (ERomulator Options Select Target) and the FLASH part (Target Flash Select) must be correctly selected. Note: Consult your target s User s Manual or Data Sheet for the location of the FLASH Enable jumper and board components mentioned in the procedure below. The programming procedure that follows assumes that the ERomulator has been previously assigned a valid IP address and that the Einterface application is installed and able to run. 1. Remove power from your target development board. 2. Remove the FLASH Enable jumper. 3. Connect the ERomulator pod (the small board on the end of the ERomulator ribbon cable) to the ERomulator Connector. Be careful to orient the ERomulator pod consistent with the label on the development system. 4. Connect the 10-conductor ribbon cable on the ERomulator pod to the I 2 C connector. 5. Apply power to the development system. 6. Run the Einterface application. 7. Select the Target Flash Select menu option and select the correct FLASH part type. For example, on the CRD98000, the FLASH memory is U2. 8. Select the Files/ Download Binary File to Target Flash menu option. The Choose Binary Files dialog will be displayed: Figure 25. Choose Binary Files Dialog Click the Add button to bring up a standard open file dialog to choose binary (.bin) files to program into FLASH. After a file is chosen, the Base Address dialog will be displayed: - Rev 2.0 May

26 Figure 26. Base Address Dialog The Base Address dialog allows the binary file to be located at any block starting address in the selected FLASH memory. The default address value is 0x , which is the reset boot location offset. The only reason to locate a binary at another location would be if you are using support files (like bitmap files, for example) which are not part of the main binary. Any support files would be added to the list with the Add button, and the appropriate hex address given for the location of the support file. The order in which files are added to the list is not significant, as they will be programmed into FLASH at the location provided by the user. 9. When all desired binary files have been selected, click the OK button. 10. You'll be prompted to replace the FLASH Enable jumper. Click OK only after you have replaced the jumper. The FLASH will then be programmed with the selected binary files. After the FLASH is programmed, you may execute the program just downloaded by selecting the Target Actions/Run Target from FLASH menu option. To continue software development from ERomulator SRAM, remove the FLASH Enable jumper. 6. Anatomy of the Flash.ini File The flash.ini file defines the characteristics of all supported FLASH for FLASH programming. Following is a section of the flash.ini file with an explanation of each part of the file: [FLASH_0] PART_NUMBER=SST39VF160 MFG=SST FORMAT=SST SIZE= MFG_ID=BF DEVICE_ID=2782 SECTOR_COUNT=32 SECTOR_0=FFFF SECTOR_1=1FFFF SECTOR_2=2FFFF SECTOR_3=3FFFF // Section header for this FLASH device // FLASH part number, used in target.ini // FLASH manufacturer // FLASH programming format, explained below // Size of FLASH memory in 8-bit bytes (hex) // Manufacturers ID (hex) // Device ID (hex) // Number of sectors in the device (decimal) // Highest 8-bit byte address in each sector (hex) 21 May 29, Rev 2.0

27 SECTOR_4=4FFFF SECTOR_5=5FFFF SECTOR_6=6FFFF SECTOR_7=7FFFF SECTOR_8=8FFFF SECTOR_9=9FFFF SECTOR_10=AFFFF SECTOR_11=BFFFF SECTOR_12=CFFFF SECTOR_13=DFFFF SECTOR_14=EFFFF SECTOR_15=FFFFF SECTOR_16=10FFFF SECTOR_17=11FFFF SECTOR_18=12FFFF SECTOR_19=13FFFF SECTOR_20=14FFFF SECTOR_21=15FFFF SECTOR_22=16FFFF SECTOR_23=17FFFF SECTOR_24=18FFFF SECTOR_25=19FFFF SECTOR_26=1AFFFF SECTOR_27=1BFFFF SECTOR_28=1CFFFF SECTOR_29=1DFFFF SECTOR_30=1EFFFF SECTOR_31=1FFFFF To add to flash.ini to allow support of other FLASH memory, add a new section header (of the form [FLASH_XX], where XX is the next number above the last section header) and fill out the rest of the section information from the FLASH data sheet. Note that FLASH size and sector addresses are in terms of 8-bit bytes, even though the FLASH is used in the x16 mode. This is because the RISC processors in the CS98XXX and CS74XX have a byte-oriented view of memory and register space, as do all of the development tools. There are two supported FLASH formats for use with the FORMAT key: ST and SST. The user can determine which format his or her target FLASH is by looking at the word programming sequence in the data sheet and matching it to one of the FLASH formats described in Section 6.1 and Section Rev 2.0 May

28 6.1 SST - 4 Bus Cycles for a Word Program Bus Cycle 1 - Address: 0x5555 Bus Cycle 2 - Address: 0x2AAA Bus Cycle 3 - Address: 0x5555 Bus Cycle 4 - Address: WA Data: 0xAA Data: 0x55 Data: 0xA0 Data: WD 6.2 ST - 4 Bus Cycles for a Word Program Bus Cycle 1 - Address: 0x555 Bus Cycle 2 - Address: 0x2AA Bus Cycle 3 - Address: 0x555 Bus Cycle 4 - Address: WA Data: 0xAA Data: 0x55 Data: 0xA0 Data: WD In the format descriptions above, WA stands for the word address to be programmed, and WD stands for the word data to be programmed. 23 May 29, Rev 2.0

29 Notes

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