w83977eg Winbond Electronics Corp America, w83977eg Datasheet - Page 104

• Manufacturer Part Number: w83977eg
• Description: Winbond Isa I/o W83977ef W83977eg
• Manufacturer: Winbond Electronics Corp America

CR70 (Default 0x00)
CR72 (Default 0x00)
CRE8 (GP20, Default 0x01)
CRE9 (GP21, Default 0x01)
CREA (GP22, Default 0x01)
CREB (GP23, Default 0x01)
Bit 7 - 4: Reserved.
Bit 3 - 0: These bits select IRQ resource for Common IRQ of GP20~GP26 at Logic Device 8.
Bit 7 - 4: Reserved.
Bit 3 - 0: These bits select IRQ resource for Watch Dog.
Bit 7 - 5: Reserved.
Bit 4 - 3: Select Function.
Bit 2: Int En
Bit 1: Polarity: 1: Invert, 0: No Invert
Bit 0: In/Out: 1: Input, 0: Output
Bit 7 - 5: Reserved
Bit 4 - 3: Select Function.
Bit 2: Int En
Bit 1: Polarity: 1: Invert, 0: No Invert
Bit 0: In/Out: 1: Input, 0: Output
Bit 7 - 5: Reserved.
Bit 4 - 3: Select Function.
Bit 1: Polarity: 1: Invert, 0: No Invert
Bit 0: In/Out: 1: Input, 0: Output
= 00 Select basic I/O function
= 01 Reserved
= 10 Select alternate function: Keyboard Reset (connected to KBC P20)
= 11 Reserved
= 1
= 0
= 00 Select Basic I/O function
= 01 Reserved
= 10 Select 2nd alternate function: Keyboard P13 I/O
= 11 Reserved
= 1
= 0
= 00 Select Basic I/O function.
= 01 Reserved
= 10 Select 2nd alternate function: Keyboard P14 I/O.
= 11 Reserved
Bit 2: Int En
= 1
= 0
Enable Common IRQ
Disable Common IRQ
Enable Common IRQ
Disable Common IRQ
Enable Common IRQ
Disable Common IRQ
W83977EF-AW/W83977EG-AW
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