W83C553F Datasheet, PDF (69/159 Pages) Winbond – SYSTEM I/O CONTROLLER WITH PCI ARBITER

W83C553F
Electrical Specifications
Clock Divisor Register (default = 00h)
Type:
Read/Write
Bit Description:
Bits [7:4]:
Bit 3:
Bits [2:0]:
Reserved.
RSTDRV. Reset Drive, valid only in PowerPC mode. When this bit is set, PCIRST# and
ISARST are enabled for 1 ms. This bit then clears (resets) itself.
Clock select (CLKSEL). This field selects the divisor for generating BCLK from PCICLK.
Combinations not listed are reserved.
Bit 2 Bit 1 Bit 0
0
0
0 =4
0
0
1 =3
0
1
0 =2
1
0
0 =6
1
0
1 =8
WINBOND SYSTEMS LABORATORY
66