Evaluation Board for Audio Codec EVAL-SSM2604

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Evaluation Board for Audio Codec EVAL-SSM0 FEATURES USB connectivity to host PC External connectivity to DSP/MCU for digital audio signals (available through general-purpose.

a low power, high quality stereo audio codec for portable digital audio applications with one set of stereo programmable gain amplifier (PGA) line inputs.

1 Evaluation Board for Audio Codec EVAL-SSM0 FEATURES USB connectivity to host PC External connectivity to DSP/MCU for digital audio signals (available through general-purpose. mm pitch connector) audio jacks: stereo line input, stereo line output Multiple test points (TP) across the board for monitoring signals Master/slave mode selectivity GENERAL DESCRIPTION The SSM0 is a low power, high quality stereo audio codec for portable digital audio applications with one set of stereo programmable gain amplifier (PGA) line inputs. The SSM0 can operate as a master or slave and supports various clock frequencies. The SSM0 software-programmable stereo output options provide many application possibilities because the device can be used as a headphone driver or as a speaker driver. Its volume control functions provide a large range of gain control of the audio signal. Included in this data sheet is a detailed setup and user guide for the SSM0 evaluation board hardware and software. Read the Evaluation Board Quick Setup section to ensure that proper communication is established from the host PC to the SSM0 evaluation board. This data sheet describes how to configure and use the SSM0 evaluation board. It is recommended that the SSM0 evaluation board data sheet be read in conjunction with the SSM0 data sheet, which provides more detailed information about the specifications, internal block diagrams, and application guidance for the codec IC. EVALUATION BOARD DESCRIPTION The SSM0 evaluation board carries a complete application circuit for the SSM0. The board features a USB connection to a host PC. This serves as the power supply, digital audio data, and control/status data link, making it a plug-and-play USB audio device that can communicate with the software under the Microsoft Windows operating system. The board also has a general-purpose. mm pitch connector to connect to an external DSP/MCU for digital audio signals. Figure shows the top view of the PCB. Figure shows the bottom view of the board. The complete schematic of the board is illustrated in Figure to Figure. Figure and Figure 9 show the top layer layout and the bottom layer layout, respectively, of the PCB. The bill of materials is shown in Table. Figure. Top View of the SSM0 Evaluation Board 0-00 Figure. Bottom View of the SSM0 Evaluation Board 0-00 Rev. 0 Evaluation boards are only intended for device evaluation and not for production purposes. Evaluation boards are supplied as is and without warranties of any kind, express, implied, or statutory including, but not limited to, any implied warranty of merchantability or fitness for a particular purpose. No license is granted by implication or otherwise under any patents or other intellectual property by application or use of evaluation boards. Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Analog Devices reserves the right to change devices or specifications at any time without notice. Trademarks and registered trademarks are the property of their respective owners. Evaluation boards are not authorized to be used in life support devices or systems. One Technology Way, P.O. Box 90, Norwood, MA 00-90, U.S.A. Tel: Fax:.. 00 Analog Devices, Inc. All rights reserved.

2 EVAL-SSM0 TABLE OF CONTENTS Features... General Description... Evaluation Board Description... Revision History... Evaluation Board Hardware... Hardware Description... Evaluation Board Software... Evaluation Board Quick Setup... GUI Functional Blocks... Evaluation Board Schematics and Artwork... Ordering Information... Bill of Materials... Ordering Guide... ESD Caution... REVISION HISTORY /0 Revision 0: Initial Version Rev. 0 Page of

EVAL-SSM0 EVALUATION BOARD HARDWARE HARDWARE DESCRIPTION The SSM0 evaluation board can be divided into several segments: the microcontroller unit (MCU) with USB interface, power supplies, analog

MCU with USB Interface The on-board microcontroller (MCU) with USB interface is located on the top left portion of the evaluation board.

interface. Use SW to reset the MCU. When the MCU is working correctly, LED D is blinking. J is a mini Type B USB connector.

3 EVAL-SSM0 EVALUATION BOARD HARDWARE HARDWARE DESCRIPTION The SSM0 evaluation board can be divided into several segments: the microcontroller unit (MCU) with USB interface, power supplies, analog input/output circuitry, the SSM0 device, and the digital audio interface and bidirectional digital buffer. MCU with USB Interface The on-board microcontroller (MCU) with USB interface is located on the top left portion of the evaluation board. The MCU has two functions: transmitting the SSM0 registers control word between the host PC and the SSM0 I C port and transmitting digital audio data between the host PC and the SSM0 digital audio interface. Use SW to reset the MCU. When the MCU is working correctly, LED D is blinking. J is a mini Type B USB connector. user must remove Resistor R and apply the desired external voltage to the power supply pads, DCVDD and, on the top center of the board. The output from LDO U provides the voltage for the analog supply, AVDD. By default, the LDO output is set at. V. If a voltage other than. V is needed for AVDD the user must remove Resistor R and apply the desired external voltage to the power supply pads, AVDD and, on the top center portion of the board. Figure. Power Supply Circuitry Analog Input/Output Circuitry The right portion of the SSM0 board includes analog input and output circuitry for SSM0. From top to bottom, these are: Stereo line input jack Stereo line output jack 0-00 Figure. USB Interface Microcontroller Power Supplies The power supplies are located on the top center portion of the board. The entire board is powered through the USB connector. There are two on-board low dropouts (LDOs) deriving. V from the USB V supply. LED D and LED D indicate power supply status. The output from LDO U provides the voltage for the digital supply,. By default, the LDO output is set to. V. If a voltage other than. V is needed for, the 0-00 Figure. Analog Input/Output Circuitry 0-00 Rev. 0 Page of

EVAL-SSM0 SSM0 Device The SSM0 device is located in the center of the SSM0 evaluation board. signal (BCLK, DACLRC, DACDAT, ADCDAT, ADCLRC, MCLK, and CLKOUT).

SSM0 Device Digital Audio Interface and Bidirectional Digital Buffer On the bottom left of the evaluation board are the general-purpose digital audio interface, J, and the bidirectional digital

4 EVAL-SSM0 SSM0 Device The SSM0 device is located in the center of the SSM0 evaluation board. signal (BCLK, DACLRC, DACDAT, ADCDAT, ADCLRC, MCLK, and CLKOUT). These signals are routed to the corresponding SSM0 digital audio interface signals through the digital buffer. The buffer is bidirectional. Its direction is controlled in the software Figure. SSM0 Device Digital Audio Interface and Bidirectional Digital Buffer On the bottom left of the evaluation board are the general-purpose digital audio interface, J, and the bidirectional digital buffer for digital audio signals. J is for connecting the SSM0 digital audio interface signals to/from the external DSP or MCU. One column of J is and the other column is marked with the name of the digital audio Figure. General-Purpose Digital Audio Interface and Buffer 0-00 Rev. 0 Page of

EVAL-SSM0 EVALUATION BOARD SOFTWARE EVALUATION BOARD QUICK SETUP Follow these five steps to quickly set up the evaluation board:. Make sure Jumper JP is applied.

The PC installs drivers for the new hardware automatically. SSM0/ 0/0 Eval Board appears on the status bar of the Speaker control panel when installation is complete.

If the USB cable is not connected or Jumper JP is not applied before running the software, an error message box appears.

5 EVAL-SSM0 EVALUATION BOARD SOFTWARE EVALUATION BOARD QUICK SETUP Follow these five steps to quickly set up the evaluation board:. Make sure Jumper JP is applied.. Connect the board to the host PC with a mini Type B USB cable. The first time the board is connected, the Windows system reports that new hardware has been found. The PC installs drivers for the new hardware automatically. SSM0/ 0/0 Eval Board appears on the status bar of the Speaker control panel when installation is complete.. Install the SSM0 evaluation board control software from SSM0 Eval Board.msi.. From the Start menu, select Programs, then ADI, then SSM0 Eval Board, and then SSM0.exe to run the control software. If the USB cable is not connected or Jumper JP is not applied before running the software, an error message box appears. Close the software, check the hardware connectivity, and rerun the software until the message box no longer appears. Figure. Speaker Control Panel Setting 0-00 Figure 9. Error Message When USB Connection Is Not Established. When installation is complete, the software GUI appears. Click the DAC button to play music files in media player. You should be able to hear the music from the headphone or from the active speaker connected to the headphone output jack of the evaluation board. Note that only music files with a khz or. khz sample rate are supported in this mode USB TO LINE OUT LINE IN TO USB LINE IN TO LINE OUT Figure 0. SSM0 Control Software GUI Rev. 0 Page of

EVAL-SSM0 GUI FUNCTIONAL BLOCKS The software GUI is logically split into menu items, command buttons, and the register control panel. The menu is for setting up the software and hardware working mode.

This is selected under the Mode menu. For I C mode, you can select between two device addresses in the IC mode submenu. Figure.

This is used to play back music on the host PC and transmit to the SSM0 DAC, or to record music with the SSM0 ADC and transmit to the host PC through a USB connection.

Only one interface can communicate with the SSM0 at one time, and this is selected under the Control menu (see Figure

The file import utility reads the register setting from a.txt file and then writes to the SSM0 internal registers. The file export utility reads the SSM0 internal registers back and then writes to a.

6 EVAL-SSM0 GUI FUNCTIONAL BLOCKS The software GUI is logically split into menu items, command buttons, and the register control panel. The menu is for setting up the software and hardware working mode. The command buttons are for register access. The register control panel is for viewing and modifying each register. The SSM0 supports the I C standard for the register control interface. This is selected under the Mode menu. For I C mode, you can select between two device addresses in the IC mode submenu. Figure. Control Interface Selection There are two available digital audio interfaces for the SSM0 on-board. One is the USB MCU. This is used to play back music on the host PC and transmit to the SSM0 DAC, or to record music with the SSM0 ADC and transmit to the host PC through a USB connection. The other digital audio interface is the general-purpose connector, J. This is used to connect to your DSP or MCU. Only one interface can communicate with the SSM0 at one time, and this is selected under the Control menu (see Figure ). Figure. Digital Audio Interface Selection The Import and Export utilities, selected from the File menu, are for reading/writing the SSM0 registers in batch mode. The file import utility reads the register setting from a.txt file and then writes to the SSM0 internal registers. The file export utility reads the SSM0 internal registers back and then writes to a.txt file Figure. Register Configuration File Format After setting the registers in the SSM0 control software GUI (see Figure 0), and clicking the Set button, the settings are configured to the corresponding SSM0 registers. If the Set button is not clicked, the SSM0 registers are not configured. The I C is a read and write protocol, so in I C mode, when the Get button is clicked, the SSM0 registers are read back and reflected in the SSM0 GUI window. The Reset button corresponds to SSM0 Register R. When it is clicked, all SSM0 registers are set to the power-on reset value. There are three short-cut buttons: DAC, ADC, and Bypass. These are used to quickly set the panel for the DAC path, the ADC path, and the analog line-in to analog line-out loopback path, respectively. The SSM0 GUI window is logically split into several different functional blocks. Each functional block represents the underlying internal register of the SSM0 that corresponds to the block. Power Management Control This section controls SSM0 Register R. If an option is checked, the power for that corresponding module is turned off; otherwise, the power is turned on for that part. For example, selecting POWER OFF shuts down the chip. 0-0 Figure. File Import/Export Utility The.txt file used for SSM0 register configuration contains multiple lines and each line is for one register. The first word of a line is a -bit register address entry, which is in two-digit hexadecimal format. The second word of a line is a 9-bit register value entry, which is in three-digit hexadecimal format. When using the import utility, use the export utility first to generate the software.txt file as a template and then add, remove, or modify the register entries in the template file. 0-0 Rev. 0 Page of Figure. Power Management Control Section 0-0

EVAL-SSM0 Line Input Control This section controls SSM0 Register R0 and Register R for the left and

Note that the Right channel follows left option and the Left channel follows right option are mutually

Specifically, the Active/Inactive option corresponds to R9. Figure.

R for the left and right headphone output channel, respectively.

Register R and Register R for the analog and digital audio path, respectively.

7 EVAL-SSM0 Line Input Control This section controls SSM0 Register R0 and Register R for the left and right line input channel, respectively. Note that the Right channel follows left option and the Left channel follows right option are mutually exclusive. Digital Audio Interface Control This section controls SSM0 Register R and D[:] of Register R. Specifically, the Active/Inactive option corresponds to R9. Figure. Line input Control section Headphone Output Control This section controls SSM0 Register R and Register R for the left and right headphone output channel, respectively. Note that the Right channel follows left option and Left channel follows right option are mutually exclusive. 0-0 Figure 9. Digital Audio Interface Control Section Sample Rate Control This section controls SSM0 Register R. 0-0 Figure. Headphone Output Control Section Analog and Digital Audio Path Control This section controls SSM0 Register R and Register R for the analog and digital audio path, respectively. MIC Input corresponds to D[:] and D[:0] of R. DAC & ADC corresponds to D[:] and D0 of R and D of R. Audio Mixer corresponds to D[:] of R. 0-0 Figure 0. Sample Rate Control Section ALC Control This section controls SSM0 Register R and Register R Figure. Analog and Digital Audio Path Control Section 0-0 Figure. ALC Control Section Noise Gate Control This section controls SSM0 Register R Figure. Noise Gate Control Section 0-0 Rev. 0 Page of

8 EVAL-SSM0 EVALUATION BOARD SCHEMATICS AND ARTWORK MCLK U CLKOUT DACDAT DACLRC DUT_BCLK DUT_DACDAT DUT_DACLRC BCLK DACDATA DACLRC LLINEIN RLINEIN LLINEIN RLINEIN LLINEIN analog_input RLINEIN ADCDAT DUT_ADCDAT 9 ADCDATA USB_DACDAT USB_ADCDAT USB_LRCLK USB_BCLK USB_MCLK USB MCU ADCLRC DUT_ADCLRC BCLK DUT_CLKOUT Digital Buffer DUT_MCLK 0 ADCLRC CLKOUT XTI_MCLK VMID LOUT VMID LOUT LOUT TP C C 00nF 0uF 0 XTO NC ROUT ROUT ROUT analog_output DUT_SDIN SDIN DUT_SCLK 9 SCLK AVDD AVDD AVDD AVSS AVDD C 00nF + C 0uF C 00nF + C 0uF power DVSS ADI-SSM0-QFN0 0-0 Figure. Schematic of SSM0 Evaluation Board, SSM0 Chip U GND0 EN GND IN GND OUT GND ADJ ADP R.k R k USB_VCC D LED GREEN C C C9 0.uF.uF 0.uF AVDD R 0K C0.uF R 0R Q MMBT90 R 0ohm R 0ohm, NC U USB_VCC D R GND0 EN GND IN GND OUT GND ADJ ADP R.k R0 k C 0.uF LED GREEN C C.uF 0.uF R9 0K C.uF 0R Q MMBT90 Figure. Schematic of SSM0 Evaluation Board, Power Supply 0-0 Rev. 0 Page of

9 EVAL-SSM0 Rev. 0 Page 9 of 0-0 TP DUT_ADCDAT TP TP9 USB_ADCLRC TP0 TP CLKOUT TP TP TP TP ADCLRC ADCDAT DACLRC DACDAT CLKOUT BCLK MCLK ms_sel USB_MCLK USB_ADCDAT USB_DACLRC USB_DACDAT USB_BCLK R K VCC_ VCC_ VCC_ VCC_ DIR DIR OE OE B0 B B B B B 9 B B B0 B B B B 9 B 0 B B A0 A A A A A 0 A A A0 A A A A 0 A 9 A A GND_ GND_0 0 GND_ GND_ GND_ GND_ GND_9 9 GND_ U LVCA-DGG C 0uF C 00nF C 00nF GP_oe DUT_MCLK USB_oe VCC_ VCC_ VCC_ VCC_ DIR DIR OE OE B0 B B B B B 9 B B B0 B B B B 9 B 0 B B A0 A A A A A 0 A A A0 A A A A 0 A 9 A A GND_ GND_0 0 GND_ GND_ GND_ GND_ GND_9 9 GND_ U LVCA-DGG DUT_BCLK GP_oe DUT_DACLRC C 0uF C9 00nF ADCLRC ADCDAT DACLRC C0 00nF MCLK DACDAT BCLK DUT_DACDAT C 0uF C 00nF C 00nF C 0uF C 00nF C 00nF J HEADERX DUT_CLKOUT DUT_ADCLRC TP Figure. Schematic of SSM0 Evaluation Board, Digital Buffer 0-0 LOUT_S ROUT_S amp_sd SPKVDD LLINEIN RLINEIN LOUT ROUT USB_VCC C0 0uF, NC C0 0uF, NC TP C nf R 0M, NC R 0M, NC L 0z/.A C nf C nf R K C 0pF R K J PHONOJACK J PAD J PAD C uf C uf C 0uF R9 K J PAD R 00 R 00 R K TP C9 uf uf R 00 OUTL+ OUTL- SD OUTR+ OUTR- NC# NC# NC#0 0 GND# VDD# VDD# GND# INL+ INL- INR+ 9 INR- U0 SSM0 U0 SSM0 C nf C R 0R C0 nf C0 nf R0 0R TP R9 0R R K TP TP TP C 0pF C 00nF J PHONOJACK J PHONOJACK R 0M, NC C 0uF TP C 0uF, NC R K R 0R, NC 0R, NC TP R 0R, NC R R 0R R Figure. Schematic of SSM0 Evaluation Board, Analog Input and Output

10 EVAL-SSM0 Rev. 0 Page 0 of 0-0 TP TP DUT_SCLK DUT_CSB DUT_MODE DUT_SDIN TP TP R.K R9.K PLLGND R K R R R K R R C9 00pF R K A A A A B B B B SW PUSHBUTTON R K USB_DACLRC USB_ADCDAT C 0uF C9 0uF C pf C pf PLLGND amp_sd L 0z/.A REST VCC GND U9 ADM Y MHz L 0z/.A USB_oe C 00nF C pf C 00nF C pf JP R K R K USB_VCC A0 A A VSS VCC WP SCL SDA U LC R0 K R 0R R 0R C 00nF L 0z/.A L 0z/.A PLLVDD USB_MCLK USB_BCLK USB_DACDAT C 00nF C 00nF PLLFILO AVDD# MCLKI DVSS# PUR DP DM # MRESET 9 TEST 0 EXTEN RSTO P_0 P_ P_/XINT DVSS# P_ P_ P_ 9 NC#0 0 # NC# P_0 P_ CDATI CSYNC CRESET # CSCHNE P_ P_ 0 P_ 9 DVSS# P_ P_ P_ PLLFILI XTALI XTALO AVSS SCL SDA VREN RESET MCLKO 0 MCLKO 9 CDATO CSCLK U 00B C nf R K0 R 0R/NC R0 0R/NC TP Vusb D-# D+# GND GND GND U USB-PORT TP9 TP DUT_SCLK D LED GREEN DUT_SDIN TP RX TP0 TP TP TX R 0R C0 0uF C 00nF GP_oe ms_sel USB_ADCLRC Figure. Schematic of SSM0 Evaluation Board, USB MCU 0-0 Figure. Layout of SSM0 Evaluation Board, Top Layer

11 EVAL-SSM0 Figure 9. Layout of SSM0 Evaluation Board, Bottom Layer 0-09 Rev. 0 Page of

12 EVAL-SSM0 ORDERING INFORMATION BILL OF MATERIALS Table. Qty Reference Designator Description Manufacturer Part Number C9, C μf capacitor, TDK CCHH0J C, C, C, C, C, C, C, C, C, C0, 0 μf capacitor, TDK CCHH0J C, C9, C C, C0, C, C. μf capacitor, TDK CCHHJ C, C, C, C, C9, C, C, C, C, C9, C0, 0. μf capacitor, 00 TDK C00CHE0J C, C, C, C, C, C, C, C, C, C, C, C, C, C0 0 μf capacitor, not populated, TDK CCHH0J C, C 0 pf capacitor, 00 TDK C00CHEJ C, C pf capacitor, 00 TDK C00CHE0J C nf capacitor, 00 TDK C00CHE0J C9 00 pf capacitor, 00 TDK C00CHE0J C, C pf capacitor, 00 TDK C00CHE0J C0, C, C, C nf capacitor, 00 TDK C00CHEJ D, D, D, D LED, 0 Digi-Key 9--0 J, J Header Digi-Key A0-0-ND JP Header Digi-Key A0-0-ND J Header Digi-Key A0-0-ND J, J Audio jack Kycon STX-00- U Mini USB, 0- AMP/Tyco Electronics 0- L, L, L, L, L Ferrite bead, 00 Murata BLMPG00SN Q, Q SOT- transistor Fairchild MMBT90 R, R 0 Ω resistor, 00 Royalohm 00SJ0TE R, R9 0 kω resistor, 00 Royalohm 00SJ00TE R, R 0 Ω resistor, 00 Royalohm 00SJ0000TE R, R. kω resistor, 00 Royalohm 00SJTE R, R0 kω resistor, 00 Royalohm 00SJ00TE R, R, R, R, R9. kω resistor, 00 Royalohm 00SJ0TE R, R, R, R. kω resistor, 00 Royalohm 00SJ0TE R, R 00 Ω resistor, 00 Royalohm 00SJ00TE R, R9, R0, R, R, R kω resistor, 00 Royalohm 00SJ0TE R.0 kω resistor, 00 Royalohm 00SJ00TE R, R kω resistor, 00 Royalohm 00SJ00TE R. kω resistor, 00 Royalohm 00SJ0TE 9 R0, R, R, R, R9, R0, R, R, R 0 Ω resistor, 00 Royalohm 00SJ0000TE R 0 Ω resistor, 00 Royalohm 00SJ0TE R, R 0 MΩ resistor, 00, not populated Royalohm 00SJ00TE SW Pushbutton Panasonic EVQ-PHP0T TP Red test point, Header N/A TP, TP, TP, TP, TP, TP, TP, TP9, TP0, Black test point, Header N/A TP, TP, TP, TP0, TP, TP TP, TP, TP, TP, TP, TP9, TP, TP Green test point, Header N/A U 0-lead stereo audio codec Analog Devices SSM0CPZ U, U SOP--9 Analog Devices ADP U, U SOP-0-0 NXP LVCA-DGG Rev. 0 Page of

13 EVAL-SSM0 Qty Reference Designator Description Manufacturer Part Number U SOP-0- Microchip LC U QFP-0- TI TAS00B U9 SOT- Analog Devices ADM U Mini USB, 0- AMP/Tyco Electronics 0- U0 SSM0 MLF-0-0A SSM0 Y MHz OSC-90-0 ECS ECS-0--X ORDERING GUIDE Model SSM0-EVALZ Description Evaluation Board ESD CAUTION Z = RoHS Compliant Part. Rev. 0 Page of

14 EVAL-SSM0 NOTES Rev. 0 Page of

15 EVAL-SSM0 NOTES Rev. 0 Page of

Evaluation Board for Quad, 16-Bit, Serial Input, Voltage Output DAC EVAL-AD5064-1EBZ

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