Renesas M3A-HS64, User Manual

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M3A-HS64G01 Functions
3.11 Clock Modules
Rev. 1.00 Apr 30, 2009
3-25
REJ11J0034-0100
3
3.11 Clock Modules
Provide following clocks with the SH7264 on the M3A-HS64.
•
SH7264 input clock: 18 MHz
•
SH7264 RTC clock: 32.768 kHz
•
SH7264 audio clock: 12.2880 MHz, and 11.2896 MHz (default)
•
SH7264 USB clock: 48.00 MHz
•
SH7264 LCD clock: 5.33 MHz
¾
How to select the system clock frequency of AK4353 (D/A converter), and AK4524 (audio codec)
SH7264 audio clock provides either 12.2880 MHz or 11.2896 MHz of the clock frequency with AK4353 and AK4524 by
switching jumpers. The figure below shows the clock module block diagram of the M3A-HS64 and M3A-HS64G01.
Table 3.11.1 lists the audio clock switching.
Figure 3.11.1 Clock Module Block Diagram
Table 3.11.1 Audio Clock Switching
Number 1-2 2-3
JP7
Provides 11.2896 MHz with the AUDIO_X1 pin (default) Provides 12.2880 MHz with the AUDIO_X1 pin