F71872
RS485 Enable Register Index F0h
Bit
Name
R/W Default
Description
7-5 Reserved
-
-
Reserved.
4
3
2
RS485_EN
RXW4C_IR
TXW4C_IR
R/W
0
0: RS232 driver.
1: RS485 driver. Auto drive RTS# low when transmitting data.
0: No reception delay when SIR is changed form TX to RX.
R/W
R/W
-
0
0
-
1: Reception delays 4 characters time when SIR is changed form TX to RX.
0: No transmission delay when SIR is changed form RX to TX.
1: Transmission delays 4 characters time when SIR is changed form RX to TX.
1-0 Reserved
Reserved.
SIR Mode Control Register Index F1h
Bit
Name
Reserved
R/W Default
Description
7
6
5
-
-
-
Reserved.
Reserved.
Reserved.
Reserved
Reserved
-
-
-
4-3 IRMODE
R/W
00
00: disable IR function.
01: disable IR function.
10: IrDA function, active pulse is 1.6uS.
11: IrDA function, active pulse is 3/16 bit time.
2
HDUPLX
R/W
1
0: SIR is in full duplex mode for loopbak test. TXW4C_IR and RXW4C_IR are
of no use.
1: SIR is in half duplex mode.
1
0
TXINV_IR
RXINV_IR
R/W
R/W
0
0
0: IRTX is in normal condition.
1: inverse the IRTX.
0: IRRX is in normal condition.
1: inverse the IRRX.
7.4.3 Device Registers
7.4.3.1 Receiver Buffer Register Base + 0
Bit
Name
R/W Default
Description
58
July, 2007
V0.28P
FINTEK [ FEATURE INTEGRATION TECHNOLOGY INC. ]
