W83787IF Datasheet, PDF (112/123 Pages) Winbond – WINBOND I/O WITH SERIAL-INFRARED SUPPORT

W83877F/787IF/787F
Application Note 3
June 20, 1995
W83787IF and W83877F Configuration Register
Feature Brief
W83877: W83777F + Dummy Plug and Play + IR
W83787IF: W83787F + IR
Description
A. W83787IF Configuration Register
CR0C
bit 7: TURA =0 the clock source of UART A is 1.8462 MHZ (24 MHZ divide 13) (default)
=1 the clock source of UART A is 24 MHZ
bit 6: TURB =0 the clock source of UART B is 1.8462 MHZ (24 MHZ divide 13) (default)
=1 the clock source of UART B is 24 MHZ
bit 5: HEFERE =0 the Extended Function Enbale Register enable value is 88H.
=1 the Extended Function Enbale Register enable value is 89H.
The default value of HEFER is dependent on pin 41 at power on setting.
bit 4: Reserved
bit 3: URIRSEL = 0 select UART B as IR function.
=1 select UART B as normal function.
The default value of URIRSEL is dependent on pin 92 at power on setting
bit 2: GIOSEL = 0 select the IDE pins definition compatible to W83787F IDE pins definition.
=1 select the W83787IF IDE pins definition and general purpose I/O function.
The default value of GIOSEL is dependent on pin 91 at power on setting.
bit 1: RX2INV =0 the SINB pin of UART B function or IRRX pin of IR function in normal condition.
=1 inverse the SINB pin of UART B function or IRRX pin of IR function
bit 0: TX2INV =0 the SOUTB pin of UART B function or IRTX pin of IR function in normal condition.
=1 inverse the SOUTB pin of UART B function or IRTX pin of IR function.
877/787I APN 3
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