STK88C4050 Syntec Semiconductor, STK88C4050 Datasheet - Page 7

• Manufacturer Part Number: STK88C4050
• Description: ROM-less Adpcm Voice Controller.
• Manufacturer: Syntec Semiconductor

(2) Port definition
00D0
*
00D1
00D2
00D3
Voice Microcontroller
The default value for each bit is 0.
Set port 1 bit function. Write only.
*
Set port 1 pull-up resistor. Write only.
*
*
Set port 1 pull-low resistor. Write only.
*
*
Set port 1 bitwise input type function. Write only.
Syntek Semiconductor Co., Ltd.
An '1' in this register will enable the pull-up resistor of the corresponding pin of port 1. But the
pull-up resistor will be disabled if the pin is output low.
The default value for each bit is 0.
An '1' in this register will enable the pull-low resistor of the corresponding pin of port 1. But
the pull-low resistor will be disabled if the pin is output low.
The default value for each bit is 0.
*
An '1' in this register will set the corresponding pin of port 1 as an output pin.
Bit 0 : = 0 set this pin as an inverter type input.
The default value for each bit is 0.
1 : = 0 set this pin as an inverter type input.
2 : = 0 set this pin as an inverter type input.
3 : = 0 set this pin as an inverter type input.
4 : = 0 set this pin as an inverter type input.
5 : = 0 set this pin as an inverter type input.
6 : = 0 set this pin as a schmitt type input.
7 : = 0 set this pin as a schmitt type input.
= 1 set this pin as a schmitt type input.
= 1 set this pin as a schmitt type input.
= 1 set this pin as a schmitt type input.
= 1 set this pin as a dimmer type input.
= 1 set this pin as a dimmer type input.
= 1 set this pin as a schmitt type input.
= 1 set this pin as an inverter type input.
= 1 set this pin as an inverter type input.
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STK88C4050