w83l950d Winbond Electronics Corp America, w83l950d Datasheet - Page 49

• Manufacturer Part Number: w83l950d
• Description: Peripheral Personal Computer Keyboard Controller
• Manufacturer: Winbond Electronics Corp America

Note:
1. The external pull-up resistor is needed for both GA20 and KBRST pin.
2. The KBRST may cause a pulse low when either the chip power-up or chip reset or LRESET#
3. If Port92 is enabled, the GA20 and KBRST are controlled by Port 92 control logic but command
4. If no special requirement, to utilize the CHIPSET’s A20 and KBRST and Port 92 is recommended
11. I/O PORT
11.1 Port GP0 Data Register (GP0)
11.2 Port GP0 Direction Register (GP0D)
11.3 Port GP1 Data Register (GP1)
11.4 Port GP1 Direction Register (GP1D)
11.5 Port GP2 Data Register (GP2)
11.6 Port GP2 Direction Register (GP2D)
received a LOW pulse.
0D1h or 0FEh command decoder.
now.
SFR address
Default value
If a pin is programmed to an output, then its respective bit can be read/ritten.
If a pin is programmed to an input, then its respective bit can only be read.
SFR address
Default value
When set to '0', respective pin is programmed as an input.
When set to '1', respective pin is programmed as an output.
SFR address
Default value
If a pin is programmed to an output, then its respective bit can be read/ritten.
If a pin is programmed to an input, then its respective bit can only be read.
SFR address
Default value
When set to '0', respective pin is programmed as an input.
When set to '1', respective pin is programmed as an output.
SFR address
Default value
If a pin is programmed to an output, then its respective bit can be read/ritten.
If a pin is programmed to an input, then its respective bit can only be read.
SFR address
0x88
0x00
0x89
0x00
0x8A
0x00
0x8B
0x00
0x8C
0x00
0x8D
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W83L950D