W83977F-A Datasheet, PDF (149/182 Pages) Winbond – WINBOND I/O

W83977F-A/ W83977G-A/ W83977AF-A/ W83977AG-A
Bit 2 : Int En
= 1 Enable Common IRQ
= 0 Disable Common IRQ
Bit 1 : Polarity : 1 : Invert, 0 : No Invert
Bit 0 : In/Out : 1 : Input, 0 : Output
CREA (GP22, Default 0x01)
Bit 7-5 : Reserved.
Bit 4-3 : Select Function.
= 00 Select Basic I/O function.
= 01 Reserved
= 10 Select 2nd alternate function : Keyboard P14 I/O.
= 11 Reserved
Bit 2 : Int En
= 1 Enable Common IRQ
= 0 Disable Common IRQ
Bit 1 : Polarity : 1 : Invert, 0 : No Invert
Bit 0 : In/Out : 1 : Input, 0 : Output
CREB (GP23, Default 0x01)
Bit 7-5 : Reserved.
Bit 4-3 : Select Function.
= 00 Select Basic I/O function
= 01 Reserved
= 10 Select 2nd alternate function : Keyboard P15 I/O
= 11 Reserved
Bit 2 : Int En
= 1 Enable Common IRQ
= 0 Disable Common IRQ
Bit 1 : Polarity : 1 : Invert, 0 : No Invert
Bit 0 : In/Out : 1 : Input, 0 : Output
CREC (GP24, Default 0x01)
Bit 7-5 : Reserved.
Bit 4-3 : Select Function.
= 00 Select Basic I/O function
= 01 Reserved
= 10 Select 2nd alternate function : Keyboard P16 I/O
= 11 Reserved
-141 -
Publication Release Date: May 2006
Revision 0.60