Technical information

Functional Overview
2.10 Clock Module
Rev.1.01 2008.05.07 2-29
REJ11J0012-0101
2
2.10 Clock Module
The clock module of SH7670 CPU board consists of two blocks.
• Output from oscillator is connected to SH7670 EXTAL
• Ceramic oscillator is connected to EXTAL and XTAL
The 16.67MHz oscillator is connected to this board.
The bus clock output from SH7670 is connected to SDRAM through dumping.
When an extension board is connected to an extension connector, it is recommended that the clock buffer with
on-chip PLL is mounted to supply the stable clock signal.
Figure 2.10.1 shows the clock module block diagram.
Figure 2.10.1 Clock Module Block Diagram