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Evaluation Board for Audio Codec
EVAL-SSM2603
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 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113 ©2009 Analog Devices, Inc. All rights reserved.
FEATURES
USB connectivity to host PC
External connectivity to DSP/MCU for digital audio signals
(available through general-purpose 2.54 mm pitch
connector)
4 audio jacks: stereo line input, mono microphone input,
stereo line output, and stereo headphone output
Multiple test points across the board for monitoring signals
Master/slave mode selectivity
GENERAL DESCRIPTION
The SSM2603 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 and one monaural
microphone input. The board can operate as a master or slave
and supports various clock frequencies. The SSM2603 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 pro-
vide a large range of gain control of the audio signal. Included in
this data sheet is a detailed setup and user guide for the SSM2603
evaluation board hardware and software. Read the Evaluation
Board Quick Setup section to ensure that proper communi-
cation is established from the host PC to the SSM2603
evaluation board.
This data sheet describes how to configure and use the SSM2603
evaluation board. It is recommended that the SSM2603 evaluation
board data sheet be read in conjunction with the SSM2603 data
sheet, which provides more detailed information about the
specifications, internal block diagrams, and application guid-
ance for the codec IC.
EVALUATION BOARD DESCRIPTION
The SSM2603 evaluation board carries a complete application
circuit for the SSM2603. 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 2.54 mm pitch connector to connect to an
external DSP/MCU for digital audio signals.
Figure 1 shows the top view of the PCB. Figure 2 shows the
bottom view of the board. The complete schematic of the board
is illustrated in Figure 23 to Figure 28. Figure 29 and Figure 30
show the top layer layout and the bottom layer layout, respec-
tively, of the PCB. The bill of materials is shown in Table 1.
0
7771-001
Figure 1. Top View of the SSM2603 Evaluation Board
07771-030
Figure 2. Bottom View of the SSM2603 Evaluation Board
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