W83977F-A Datasheet, PDF (131/182 Pages) Winbond – WINBOND I/O

W83977F-A/ W83977G-A/ W83977AF-A/ W83977AG-A
= 0 Disable IRQ Sharing
= 1 Enable IRQ Sharing
Bit 3 :Reserved
Bit 2-0 : PRTMODS2 - PRTMODS0
= 0xx Parallel Port Mode
= 100 Reserved
= 101 External FDC Mode
= 110 Reserved
= 111 External two FDC Mode
CR29 [W83977AF only]
Bit 7-0 : CPSIDB7 - CPSIDB0 --> Comply PnP Serial ID Bit 7 - Bit 0.
CR2A (Default 0x00)
Bit 7 : PIN57S
= 0 KBRST
= 1 GP12
Bit 6 : PIN56S
= 0 GA20
= 1 GP11
Bit 5-4 : PIN40S1, PIN40S0
= 00 CIRRX [W83977AF only]
= 01 GP24
= 10 8042 P13
= 11 Reserved
Bit 3-2 : PIN39S1, PIN39S0
= 00 IRRXH [W83977AF only]
= 01 IRSL0 [W83977AF only]
= 10 GP25
= 11 CTSC [W83977AF only]
Bit 1-0 : PIN3S1, PIN3S0
= 00 DRVDEN1
= 01 GP10
= 10 8042 P12
= 11 nDSRC
CR2B (Default 0x00)
Bit 7-6 : PIN73S1, PIN73S0
= 00 PANSW
= 01 GP23
= 10 Reserved
= 11 DCDC [W83977AF only]
Bit 5 : PIN72S
= 0 PSCTRL
= 1 GP22
-123 -
Publication Release Date: May 2006
Revision 0.60