W83787IF Datasheet, PDF (83/123 Pages) Winbond – WINBOND I/O WITH SERIAL-INFRARED SUPPORT

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W83787IF
GDA1IPI
GDA1OPI
GCS1IOW
GCS1IOR
GIO1 CS TYPE
GIOP1MD0
GIOP1MD1
GIOP1MD2
Notes:
GIOP1MD2~0 (Bit 7 ~ Bit 5):
These three bits define GIOP1 pin mode, that is either Chip-Select or Data Port, as shown in
following table.
GIOP1M
D2
0
0
0
0
1
GIOP1MD1~0
GIO1 Pin Mode
00
Inactive (tri-state)
01
Data outport port (SDP0 → GIOP0).
• When (AEN=L) & (IOW =L) & (SA10~0=GIO0AD10~0), the value of
SD0 will present at GIOP1
10
Data input port (SD0 ← GIOP0).
• When (AEN=L) & (IOR =L) & (SA10~0=GIO0AD10~0), the value of
GIOP1 will present at SD0
11
Data I/O port (SD0 ↔ GIOP0).
1. When (AEN=L) & (IOW =L) & (SA10~0=GIO0AD10~0), the value of
SD0 will present at GIOP1, or
2. when (AEN=L)&( IOR =L) &(SA10~0=GIO0AD10~0), the value of
GIOP1 will present at SD0
XX
Chip Select Pin.
• When (AEN=L) & (IOW =L or IOR =L) & (SA10~0=GIO0AD10~0)
, the pin will be activated. The active level is defined in CR15.bit4
and the IORN or IOWN are defined in CR15.bit3~2.
GIO1 CS TYPE (Bit 4):
This bit define the pin active state when GIOP1 acts as Chip Select pin.
0
Active LOW when (AEN=L) & (IOW =L or IOR =L) & (SA10~0=GIO0AD10~0).
1
Active HIGH when (AEN=L) & (IOW =L or IOR =L) & (SA10~0=GIO0AD10~0).
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Publication ReleaseDate:Sep 1995
Revision A1