W83877 Winbond Electronics Corp America, W83877 Datasheet - Page 93

• Manufacturer Part Number: W83877
• Description: Winbond I/O
• Manufacturer: Winbond Electronics Corp America

GDA1IPI (bit 0): See below.
8.2.22 Configuration Register 16 (CR16), default = 0eH
When the device is in Extended Function mode and EFIR is 16H, the CR16 register can be accessed
through EFDR. The bit definitions are as follows:
Bit 7-bit 5: Reserved.
GOIQSEL (bit 4):
The corresponding power-on setting pin is NRTSB (pin 45).
GMDRQ (bit 3):
The corresponding power-on setting pin is SOUTB (pin 43).
PNPCVS (bit 2):
The corresponding power-on setting pin is NRTSA (pin 36).
GDA1OPI
0
0
0
1
0
1
0
0
1
1
pins 92, 96 function as IRQ_B, IRQ_A, respectively.
pins 92, 96 function as GIO0, GIO1, respectively.
pins 39, 41 function as DRQ_A, NDACK_A, respectively.
pins 39, 41 function as NGMWR, NGMRD, respectively.
PnP-related registers (CR1E, CR20-29) reset to be all 0s.
default settings for these registers.
GDA1IPI
0
1
0
1
7
GIOP1 functions as a data pin, and GIOP1 SD1, SD1 GIOP1
GIOP1 functions as a data pin, and inverse GIOP1 SD1,
SD1 GIOP1
GIOP1 functions as a data pin, and GIOP1 SD1, inverse
SD1 GIOP1
GIOP1 functions as a data pin, and inverse GIOP1
SD1 GIOP1
6
5
4
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3
2
1
0
Publication Release Date: January 1996
HEFRAS
IRIDE
PNPCVS
GMDRQ
GOIQSEL
Reserved
Reserved
Reserved
SD1, inverse
W83877F
Revision A2