r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 764

• Manufacturer Part Number: r8a77850anbg
• Description: Renesas 32-bit Risc Microcomputer Superh? Risc Engine Family
• Manufacturer: Renesas Electronics Corporation.

15. Clock Pulse Generator (CPG)
Rev.1.00 Jan. 10, 2008 Page 734 of 1658
REJ09B0261-0100
MODE 10
MODE 4
MODE 3
MODE 2
MODE 1
MODE 0
EXTAL
XTAL
Oscillator circuit
Control section
Legend:
FRQCR0:
FRQCR1:
MSTPCR1: Module standby control register 1*
Note: * For details about MSTPCR1, see section 17, Power-Down Mode.
Crystal oscillator
circuit
FRQCR0
Frequency control register 0
Frequency control register 1
Clock frequency
control circuit
Figure 15.1 Block Diagram of the CPG
PLL circuit 1
FRQCR1
Divider 1
× 1
× 72
× 36
Bus interface
Peripheral bus
Divider 2
× 1/2
× 1/4
× 1/6
× 1/8
× 1/12
× 1/16
× 1/18
× 1/24
× 1/32
× 1/36
× 1/48
Clock control circuit
MSTPCR1
PLL circuit 2
Bus clock
(Bck)
CPU clock
(Ick)
SHwy clock
(SHck)
GA clock
(GAck)
DU clock
(DUck)
Peripheral clock
(Pck)
DDR clock
(DDRck)
RAM clock
(Uck)
× 1
CLKOUT
CLKOUTENB