Figure 10.1(2) Block Diagram Of Cpg (Sh7751R) - Hitachi SH7751 Hardware Manual

Oscillator circuit
Crystal
XTAL
oscillator
EXTAL
MD8
CKIO
CPG control unit
MD2
MD1
MD0
FRQCR:
STBCR:
STBCR2:
Rev. 3.0, 04/02, page 244 of 1064
PLL circuit 1
× 6
× 12
PLL circuit 2
× 1
Clock frequency
control circuit
FRQCR
Bus interface
Internal bus
Frequency control register
Standby control register
Standby control register 2

Figure 10.1(2) Block Diagram of CPG (SH7751R)

Frequency
divider 2
× 1
× 1/2
× 1/3
× 1/4
× 1/6
× 1/8
Standby control
circuit
STBCR
STBCR2
CPU clock (Iø)
cycle Icyc
Peripheral module
clock (Pø) cycle
Pcyc
Bus clock (Bø)
cycle Bcyc