W83877TF Datasheet, PDF (108/154 Pages) Winbond – I/O chip disk drive adapter

W83877TF
8.2.14 Configuration Register D (CR0D), default = A3H
When the device is in Extended Function mode and EFIR is 0DH, the CR0D register can be accessed
through EFDR. The bit definitions are as follows:
765 43 ²¹ 0
SIRTX1 (Bit 7): IRTX pin selection bit 1
SIRTX0 (Bit 6): IRTX pin selection bit 0
SIRTX1
0
0
1
1
SIRTX0
0
1
0
1
IRTX output on pin
disabled
IRTX1 (pin 43)
IRTX2 (pin 95)
disabled
IRMODE0
IRMODE1
IRMODE2
HDUPLX
SIRRX0
SIRRX1
SIRTX0
SIRTX1
SIRRX1 (Bit 5): IRRX pin selection bit 1
SIRRX0 (Bit 4): IRRX pin selection bit 0
SIRRX1
0
0
1
1
SIRRX0
0
1
0
1
IRRX input on pin
disabled
IRRX1 (pin 42)
IRRX2 (pin 94)
disabled
HDUPLX (Bit 3):
0
The IR function is Full Duplex.
1
The IR function is Half Duplex.
IRMODE2 (Bit 2): IR function mode selection bit 2
IRMODE1 (Bit 1): IR function mode selection bit 1
IRMODE0 (Bit 0): IR function mode selection bit 0
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Publication Release Date: March 1998
Version 0.61