w83628f Winbond Electronics Corp America, w83628f Datasheet - Page 17

• Manufacturer Part Number: w83628f
• Description: Pci To Isa Bridge Set
• Manufacturer: Winbond Electronics Corp America

8.8 IO_RCVR-IO RECOVERY REGISTER
Address Offset:
Default Value:
Attribute:
Bit 7
Bit 6
Bit 5:3
Bit 2
Bit 1:0
SYSCLK Divider.
0 = SYSCLK is equal to PCICLK divided by 4.
1 = SYSCLK is equal to PCICLK divided by 3.
8-bit I/O Recovery Enable
0 = Disable bits 5:3 setting and uses 3.5 SYSCLKs for 8 bit I/O recovery time.
1 = Enable bits 5:3 setting.
8-bit I/O RecoveryTimes.
When bit 6=1 ,this 3-bit field defines the additional number of SYSCLKs added
to standard 3.5 SYSCLK recovery time for 8 bit I/O
000 =0 SYSCLK
001 =1 SYSCLK
010 =2 SYSCLKs
011 =3 SYSCLKs
100 =4 SYSCLKs
101 =5 SYSCLKs
110 =6 SYSCLKs
111 = 7 SYSCLKs
16-bit I/O Recovery Enable.
= 0 Ignore bits 1:0 setting and uses 3.5 SYSCLKs for 16-bit I/O recovery time.
= 1 The 16-bit I/O recovery time is decided by bits 1:0.
16-bit I/O Recovery Times.
When bit 2=1 ,this 2-bit field defines the additional number of SYSCLKs added
to standard 3.5 SYSCLK recovery time for 16 bit I/O
= 01
= 10
= 11
= 00
40h
4Dh
Read/Write
4 SYSCLKs
1 SYSCLK
2 SYSCLKs
3 SYSCLKs
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W83628F & W83629D
Publication Release Date: May 18, 2005
Revision A1