HD6417660 RENESAS [Renesas Technology Corp], HD6417660 Datasheet - Page 378

• Manufacturer Part Number: HD6417660
• Description: Renesas 32-Bit RISC Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

11.4
The CPG has the following registers. Refer the section 27, List of Registers, for the addresses of
the registers and the register states in each operating mode.
• Frequency control register (FRQCR)
• Memory clock control register (MCCR)*
• Standby control register (STBCR, STBCR2 to STBCR4)*
Note: * For further information on MCCR, STBCR, and STBCR2 to STBCR4, see section 13
11.4.1
FRQCR is a 16-bit readable/writable register used to specify whether a clock is output from the
CKIO pin at standby mode, the frequency multiplication ratio of PLL circuit 1, and the frequency
division ratio of the internal clock and the peripheral clock.
Only word access can be used on the FRQCR register.
This register is initialized by power-on reset from the RESETP pin and retains the previous value
after manual reset and standby mode.
Rev. 1.00, 02/04, page 340 of 804
9. Operation of this LSI cannot be guaranteed using combinations other than those in
Register Descriptions
Frequency Control Register (FRQCR)
Power-Down Mode
table 11.3.