PC87393VJG National Semiconductor, PC87393VJG Datasheet - Page 89
PC87393VJG
Manufacturer Part Number
PC87393VJG
Description
IC, SUPER I/O DEVICE, TQFP-100
Manufacturer
National Semiconductor
Specifications of PC87393VJG
Data Rate
2Mbps
Supply Voltage Range
3V to 3.6V
Logic Case Style
TQFP
No. Of Pins
100
Operating Temperature Range
0°C to +70°C
Termination Type
SMD
Transceiver Type
Interface
Rohs Compliant
No
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
PC87393VJG
Manufacturer:
NS/国半
Quantity:
20 000
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5.0 Game Port (GMP)
5.3.3
This register is functional in all Game Port operation modes. Reading this register returns the status and the state of Device
A and B button and Axis pins, as defined in the table below. Writing to the offset of this register initiates a game device po-
sition reading process by forcing a low pulse to be driven on the axis pins in Legacy and Enhanced modes, and by initializing
all position counters in Enhanced mode.
Location:
Type:
Bit
Name
Reset
Bit
7
6
5
4
3
2
1
0
Game Port Legacy Status Register (GMPLST)
Device B Button 1 Pin Status. This bit directly reflects the status of Device B Button 1 input pin.
0: Low
1: High
Device B Button 0 Pin Status. This bit directly reflects the status of Device B Button 0 input pin.
0: Low
1: High
Device A Button 1 Pin Status. This bit directly reflects the status of Device A Button 1 input pin.
0: Low
1: High
Device A Button 0 Pin Status. This bit directly reflects the status of Device A Button 0 input pin.
0: Low
1: High
Device B Y-Axis Pin Status. This bit reflects the state of Device B Y-axis input pin.
0: JOYBY pin is driven low
1: JOYBY pin is released for charging
Device B X-Axis Pin Status. This bit reflects the state of Device B X-axis input pin.
0: JOYBX pin is driven lowr
1: JOYBX pin is released for charging
Device A Y-Axis Pin Status. This bit reflects the state of Device A Y-axis input pin.
0: JOYAY pin is driven low
1: JOYAY pin is released for charging
Device A X-Axis Pin Status. This bit reflects the status of Device A X-axis input pin.
0: JOYAX pin is driven low
1: JOYAX pin is released for charging
Offset 01h
RO
Pin Status
Device B
Button 1
X
7
Pin Status
Device B
Button 0
(Continued)
X
6
Pin Status
Device A
Button 1
X
5
Pin Status
Device A
Button 0
Description
89
4
X
Y-Axis Pin
Device B
Status
X
3
X-Axis Pin
Device B
Status
X
2
Y-Axis Pin
Device A
Status
X
1
X-Axis Pin
Device A
www.national.com
Status
X
0
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