TN260. Updating Your Application from the RCM3365 to the RCM3900. Introduction

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Collin Boone
5 years ago
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1 Introduction TN260 Updating Your Application from the RCM3365 to the RCM3900 Rabbit is changing our product offerings to respond to both market requirements and the components available to us. We can no longer obtain certain components for the RCM3365/RCM3375 RabbitCore modules that support the originally specified -40 C to +70 C temperature range. In addition, our customers have requested a larger removable mass storage device. Instead of changing the design of the RCM3365/RCM3375 Rabbit- Core modules to handle available components specified for the original temperature range, we decided to develop a new product line the RCM3900 that supports the original temperature range and provides a better, longer term removable mass storage solution. We are introducing the RCM3900/RCM3910 RabbitCore modules in June, These new modules are identical in form, dimensions, and function to the RCM3365/3375 modules, except we replaced the xd- Picture Card mass storage device with a minisd Card. The minisd Card is more readily available today, is in use worldwide, and is expected to remain readily available for a long time. In addition, minisd Cards provide the significantly larger memory capacity that has been requested by our customers. We strongly recommend that existing RCM3365/3375 customers and designers of new systems consider using the new RCM3900/RCM3910 RabbitCore modules. This Technical Note compares the two series of RabbitCore modules, and provides complete information on how to port your application developed for the RCM3365/RCM3375 to the equivalent RCM3900/ RCM3910 RabbitCore modules Rev. D 1

2 Comparing the RCM3365/RCM3375 and the RCM3900/RCM3910 Temperature Specifications RCM3365/RCM3375 RabbitCore modules manufactured after May, 2008, are specified to operate at 0 C to +70 C. The RCM3900/RCM3910, rated for -20 C to +85 C, are available starting in June, Ethernet Chip A different Ethernet controller chip is used on the RCM3900/RCM3910. The Ethernet chip is able to detect automatically whether a crossover cable or a straight-through cable is being used in a particular setup, and will configure the signals on the Ethernet jack interface. Maximum Current The RCM3365/RCM3375 draws 250 ma vs. the 325 ma required by the RCM3900/RCM3910. Removable Mass Storage The hot-swappable xd-picture Card mass storage device with up to 128MB of memory has been replaced with the minisd Card. with up to 1GB of memory. The trade-off for the larger memory capacity is that the data transfer rate to/from the minisd Card is about an order of magnitude slower than to/from the xd-picture Card. Serial Ports NOTE: RCM3365/RCM3375 RabbitCore modules may eventually be discontinued because of changes to the xd-picture Card. Serial Port B, available either as a clocked serial port or as an asynchronous serial port on the RCM3365/ RCM3375, is used by the RCM3900/RCM3910 as a clocked serial peripheral interface (SPI) for the minisd Card, and is not brought out for customer use. General-Purpose I/O PD2, a configurable I/O pin on the RCM3365/RCM3375, is used to detect whether the minisd Card is installed on the RCM3900/RCM3910, and so PD2 is not brought out for customer use on the RCM3900/ RCM3910. If you have an application involving PD2 on the RCM3365/RCM3375 such as the RabbitNet peripheral cards example on the Prototyping Board, you will have to select another available output to use instead of PD2. You will need to modify your program, and remember to change the RabbitNet or other configuration library where PD2 is set up. Your motherboard will have to be changed accordingly Rev. D 2

3 J1 R10 R27 R8 U2 Y1 C4 C11 C15 U13 C1 C35 R5 R13 U6 R9 R6 U16 U4 R18 R80 R22 C74 U1 R4 R64 R77 C5 Y2 R7 C2 C3 C78 U5 U3 C36 R45 R29 C18 C21 C58 R44 R53 R54 R31 C80 R59 J6 C61 R30 R82 L1 C86 Q2 J2 L2 R35 R36 R37 R38 L4 C13 C17 R8 U4 U3 R12 R13 R14 2 R23 C31 C30 R16 C26 C32 1 C18 LEDs The SPEED and user (USR/BSY) LED locations have been swapped between the RCM3365/RCM3375 and the RCM3900/RCM3910, the LNK/ACT LEDs have been combined to one LED on the RCM3900/ RCM3910, and the RCM3900/RCM3910 has an FDX/COL LED instead of the FM LED on the RCM3365/RCM3375. The FDX/COL LED on the RCM3900/RCM3910 indicates whether the Ethernet connection is in full-duplex mode (steady on) or that a half-duplex connection is experiencing collisions (blinks). The FM LED on the RCM3365/RCM3375 blinks when data are being written to or read from the xd-picture Card ; the USR LED on the RCM3900/RCM3910 can be set up to perform the same role for the minisd Card as explained in the RabbitCore RCM3900 User s Manual. Figure 1 compares the RCM3365/RCM3375 and the RCM3900/RCM3910 component layouts. The LED placements on the boards remain unchanged. RCM3365 RCM3900 R11R12 C6 C14 R84 R2 R85 R70 R86 C67 C104 R50 C9 C12 C13 JP9 U1 R1 R3 Y1 C6 R11 C5 R2 C7 R7 C1 R15 J1 C2 R4 R5 R6 U2 R9 C3 C4 R10 JP1 JP2 JP3 JP4 JP5 C8 C9 U5 C10 C11 C14 J2 C19 C22 R17 C10 C16 C12 C19 C15 R1 R14 R15 R26 C20 C24 R23 C28 R17 R19 C34 R20 R21 R25 C27 JP6 JP7 JP8 JP4 JP5 R96 R67 C105 C20 C21 C24 C28 C25U6 R18 Y2 C29 C37 C34 C22 C23 C27 JP7 C33 L2 C36 U7 C35 R19 R20 JP8 J3 JP9 JP10 L1 C81 C82 C72 C71 C70 C77 R79 C79 C76 R81 C42 R43 SPEED USR FM LINK ACT C41 C42 JP11 C38 JP12 JP13 C49 C50 R27 C43 U8 R25 R26 R24 Y3 R21 C44 C39 C40R22 C46 JP14 C47 R30 R28 C45 R29 U10 D1 Q2 U9 RCM39XX BSY C48 R31 CE R32 R35 R33 Q1 R34 SPD LNK ACT COL FDX USR FM LINK ACT SPEED BSY CE SPD LNK ACT COL FDX Figure 1. RCM3365/RCM3375 and RCM3900/RCM3910 LED Layouts Rev. D 3

4 Dynamic C As long as no low-level FAT file system calls or direct xd-picture Card access calls to the NFLASH.LIB library were used in your application developed for the RCM3365/RCM3375, you may run that application on the RCM3900/RCM3910 after you recompile it using Dynamic C v NOTE: The Dynamic C RabbitSys option for programming an RCM3365 over an Ethernet link is not supported for the RCM3900. Dynamic C v now has many of the previously optional modules included in the standard release. Table 1 compares the Dynamic C features available for the two series of RabbitCore modules. Table 1. Comparison of Dynamic C Resources Dynamic C RCM3365/RCM3375 RCM3900/RCM3910 Standard Release v v FAT File System v (included in Development Kit) RabbitWeb Optional Modules Optional Security Modules RabbitSys Other Optional Modules (available separately) Point-to-Point Protocol (PPP) Simple Network Management Protocol (SNMP) µc/os-ii Real-Time Kernel Library Encryption Executable Modbus TCP Advanced Encryption Standard (AES) Secure Sockets Layer (SSL) RCM3365 only (must be RabbitSys-enabled) Rabbit Field Utility source code One-Year Telephone Technical Support Subscription Included in Standard Release Rabbit Embedded Security Pack not supported Rabbit Field Utility source code One-Year Telephone Technical Support Subscription Rev. D 4

5 Summary Table 2 summarizes the features for the two series of RabbitCore modules. Table 2. Feature Comparison Parameter RCM3365 RCM3375 RCM3900 RCM3910 SRAM 512K program (fast SRAM) + 512K data 512K program (fast SRAM) + 512K data Flash Memory (program) 512K 512K Memory (data storage) 32MB (fixed NAND flash) + up to 128MB xd-picture Card up to 128MB xd-picture Card 32MB (fixed NAND flash) + 128MB 1GB minisd Card 128MB 1GB minisd Card Operating Temperature -40 C to +70 C (up to May, 2008) 0 C to +70 C (after May, 2008) -20 C to +85 C (with minisd Card) Board Size 1.850" 2.725" 0.86" (47 mm 69 mm 22 mm) Dynamic C v (standard release) + FAT File System Module v v (standard release) (includes FAT File System) Rabbit A Digi International Brand Rev. D 5

RabbitCore RCM3365/RCM3375 C-Programmable Core Module with NAND Flash Mass Storage and Ethernet. User s Manual G

RabbitCore RCM3365/RCM3375 C-Programmable Core Module with NAND Flash Mass Storage and Ethernet User s Manual 019 0150 080528 G RabbitCore RCM3365/RCM3375 User s Manual Part Number 019-0150 080528 G Printed