W83877 Winbond Electronics Corp America, W83877 Datasheet - Page 92

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

GIOP1MD2-GIOP1MD0 (bit 7-bit 5): GIOP1 pin mode selection
GIO1CSH (bit 4):
GCS1IOR (bit 3): See below.
GCS1IOW (bit 2): See below.
GDA0OPI (bit 1): See below.
GIOP1MD2
GCS1IOR
0
0
0
0
1
0
1
0
0
1
1
the Chip Select pin will active LOW when (AEN = L) AND (SA10-0 = GIOAD10-0)
OR (NIOR = L) OR (NIOW = L)
the Chip Select pin will active HIGH when (AEN = L) AND (SA10-0 = GIOAD10-0)
OR (NIOR = L) OR (NIOW = L)
GIOP1MD1
GCS1IOW
X
0
0
1
1
0
1
0
1
GIOP1 functions as a Chip Select pin, and will be active when
(AEN = L) AND (SA10-0 = GIO1AD10-0)
GIOP1 functions as a Chip Select pin, and will be active when
(AEN = L) AND (SA10-0 = GIO1AD10-0) AND (NIOW = L)
GIOP1 functions as a Chip Select pin, and will be active when
(AEN = L) AND (SA10-0 = GIO1AD10-0) AND (NIOR = L)
GIOP1 functions as a Chip Select pin, and will be active when
(AEN = L) AND (SA10-0 = GIO1AD10-0) AND (NIOW = L OR
NIOR = L)
GIOP1MD0
X
0
1
0
1
inactive (tri-state)
as a data output pin (SD1 GIOP1), when (AEN = L)
AND (NIOW = L) AND (SA10-0 = GIO1AD10-0), the
value of SD1 will be present on GIOP1
as a data input pin (GIOP1 SD1), when (AEN = L)
AND (NIOR = L) AND (SA10-0 = GIO1AD10-0), the
value of GIOP1 will be present on SD1
as a data input/output pin (GIOP1 SD1).
When (AEN = L) AND (NIOW = L) AND (SA10-0 =
GIO1AD10-0), the value of SD1 will be present on
GIOP1 When (AEN = L) AND (NIOR = L) AND (SA10-
0 = GIO1AD10-0), the value of GIOP1 will be present
on SD1
as a Chip Select pin, the pin will be active at (AEN =
L) AND (SA10-0 = GIO1AD10-0) OR (NIOR = L) OR
(NIOW = L)
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GIOP1 pin
W83877F