Renesas M3A-HS64, User Manual

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M3A-HS64G01 Functions
3.4 Audio Modules
Rev. 1.00 Apr 30, 2009
3-18
REJ11J0034-0100
3
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AK4524 audio codec
RSPI, SSIF, and I/O ports on the SH7264 control the audio codec.
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SH7264 RSPI (Channel 1): Accesses the AK4524 registers to initialize AK4524, and format data
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SH7264 SSIF (Channel 0): Inputs/Outputs the audio data
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SH7264 I/O port (PG24): Powers down AK4524 at low
Powers up AK4524 at high
Note: M3A-HS64 allows selecting either 12.2880 MHz or 11.2896 MHz as the AK4524 system clock.
The figure below shows the audio codec block diagram. Refer to Table 3.4.1 for the jumper setting (JP7).
The plug-in power microphone can be connected when JP3 is shorted.
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Figure 3.4.2 Audio Codec Block Diagram
Table 3.4.2 Jumper Setting (JP3)
Number 1-2 None (Open)
JP3
Plug-in power microphone available Typical microphone available (default)