w83877atd Winbond Electronics Corp America, w83877atd Datasheet - Page 123
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w83877atd
Manufacturer Part Number
w83877atd
Description
Winbond I/o
Manufacturer
Winbond Electronics Corp America
Datasheet
1.W83877ATD.pdf
(191 pages)
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8.2.20 Configuration Register 14 (CR14), default = 00H
When the device is in Extended Function mode and EFIR is 14H, the CR14 register can be accessed
through EFDR. The bit definitions are as follows:
GIOP0MD2-GIOP0MD0 (Bit 7-bit 5): GIOP0 pin mode selection
GIO0CSH(Bit 4):
GCS0IOR (Bit 3): See below.
GIOP0MD2
0
1
0
0
0
0
1
the Chip Select pin will be active LOW when (AEN = L) AND (SA10-0 = GIO0AD10-
0) OR (NIOR = L) OR (NIOW = L)
the Chip Select pin will be active HIGH when (AEN = L) AND (SA10-0 = GIO0AD10-
0) OR (NIOR = L) OR (NIOW = L)
GIOP0MD1
X
0
0
1
1
7
GIOP0MD0
6
X
0
1
0
1
5
4
inactive (tri-state)
as a data output pin (SD0 GIOP0), when (AEN = L)
AND (NIOW = L) AND (SA10-0 = GIO0AD10-0), the
value of SD0 will be present on GIOP0
as a data input pin (GIOP0 SD0), when (AEN = L)
AND (NIOR = L) AND (SA10-0 = GIO0AD10-0), the
value of GIOP0 will be present on SD0
as a data input/output pin (GIOP0 SD0).
When (AEN = L) AND (NIOW = L) AND (SA10-0 =
GIO0AD10-0), the value of SD0 will be present on
GIOP0 When (AEN = L) AND (NIOR = L) AND (SA10-
0 = GIO0AD10-0), the value of GIOP0 will be present
on SD0
as a Chip Select pin, the pin will be active at (AEN =
L) AND (SA10-0 = GIO0AD10-0) OR (NIOR = L) OR
(NIOW = L)
3
- 119 -
2
1
0
GDA0IPI
GDA0OPI
GCS0IOW
GCS0IOR
GIO0CSH
GIOP0MD0
GIOP0MD1
GIOP0MD2
Publication Release Date: April 1998
GIOP0 pin
W83877ATF
Version 0.51
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