W83977EG-AW Datasheet, PDF (101/142 Pages) Nuvotem Talema – These products are not designed for use in life support appliances

W83977EF-AW/W83977EG-AW
Bit 4: IRQ Filter Select
= 1 Debounce Filter Enabled
= 0 Debounce Filter Bypassed
Bit 3: Select Function.
= 1 Select Alternate Function: Interrupt Steering.
= 0 Select Basic I/O Function.
Bit 2: Reserved.
Bit 1: Polarity.
= 1 Invert.
= 0 No Invert.
Bit 0: In/Out selection.
= 1 Input.
= 0 Output.
CRE2 (GP12, Default 0x01)
Bit 7 - 5: Reserved.
Bit 4 - 3: Select Function.
= 00 Select Basic I/O function.
= 01 Select 1st alternate function: Watch Dog Timer Output.
= 10 Reserved
= 11 Reserved
Bit 2: Reserved.
Bit 1: Polarity: 1: Invert, 0: No Invert
Bit 0: In/Out: 1: Input, 0: Output
CRE3 (GP13, Default 0x01)
Bit 7 - 5: Reserved.
Bit 4 - 3: Select Function.
= 00 Select Basic I/O function.
= 01 Select 1st alternate function: Power LED output.
= 10 Reserved
= 11 Reserved
Bit 2: Reserved.
Bit 1: Polarity: 1: Invert, 0: No Invert
Bit 0: In/Out: 1: Input, 0: Output
CRE4 (GP14, Default 0x01)
Bit 7 - 6:
= 00 Address decoder is 1-Byte boundary.
= 01 Address decoder is 2-Byte boundary.
= 10 Address decoder is 4-Byte boundary.
= 11 Address decoder is 8-Byte boundary.
Publication Release Date: Apr. 2006
-99-
Revision 1.2