Hitachi HD64465 User Manual page 171

(26) Timing Control Register (ITMCR)
Address: H'100071F0 (Read/ Write)
Bit 7
Bit Name -
Initial Value -
R/W -
Bit Description
7 - 3 Reserved
0 - 2 Timing Control (TMCR[2:0])
These three bits TMCR[2:0] are used to adjust the timing for different CKIO frequency
rates.
3'b000, 3'b001 : Set as CKIO frequency is 12.5MHz.
3'b010 : Set as CKIO frequency is 25MHz.
3'b011 : Set as CKIO frequency is 30MHz.
3'b100 : Set as CKIO frequency is 40MHz.
3'b101 : Set as CKIO frequency is 50MHz.
3'b110 : Set as CKIO frequency is 66MHz.
3'b111 : Reserved.
Rev. 3.0, 03/01, page 152 of 390
6 5 4
- - -
- - -
- - -
3 2 1
- TMCR2 TMCR1
- 1 1
- R/W R/W
0
TMCR0
0
R/W
Default
0