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| HD6417750RF240DV Datasheet, PDF (341/1132 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH™ RISC engine Family / SH7750 Series | |||
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SH7750, SH7750S, SH7750R Group
Section 10 Clock Oscillation Circuits
10.2 Overview of CPG
10.2.1 Block Diagram of CPG
Figure 10.1 (1) shows a block diagram of the CPG in the SH7750 and SH7750S, and figure 10.1
(2) a block diagram of the CPG in the SH7750R.
XTAL
EXTAL
MD8
Oscillator circuit
Crystal
oscillation
circuit
PLL circuit 1
Ã6
Frequency
divider 2
Ã1
Ã1/2
Ã1/3
Ã1/4
Ã1/6
Ã1/8
Frequency
divider 1
Ã1/2
CKIO
PLL circuit 2
Ã1
CPU clock (Ick)
cycle Icyc
Peripheral module
clock (Pck) cycle
Pcyc
Bus clock (Bck)
cycle Bcyc
MD2
MD1
MD0
CPG control unit
Clock frequency
control circuit
Standby control
circuit
FRQCR
STBCR
Bus interface
STBCR2
Legend:
FRQCR: Frequency control register
STBCR: Standby control register
STBCR2: Standby control register 2
Internal bus
Figure 10.1 (1) Block Diagram of CPG (SH7750, SH7750S)
R01UH0456EJ0702 Rev. 7.02
Sep 24, 2013
Page 289 of 1076
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