W83977F Datasheet, PDF (86/181 Pages) Winbond – PLUG & PLAY 1.0A COMPLIANT

W83977F/ W83977AF
4.9.2 Set7.Reg1 - Remote Infrared Transmitter Control (RIR_TXC)
PRELIMINARY
Reg.
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
RIR_TXC TX_PW2 TX_PW1 TX_PW0 TX_FSL4 TX_FSL3 TX_FSL2 TX_FSL1 TX_FSL0
Default Value
0
1
1
0
1
0
0
1
This Register defines the transmitter frequency and pulse width of remote IR.
Bit 7~5: TX_PW2~0 - Transmitter Pulse Width 2~ 0.
Select the transmission pulse width.
TX_PW2~0
010
Low Frequency
6 µs
011
7 µs
100
9 µs
101
10.6 µ s
Note that those unassigned combinations are reserved.
Bit 4~0:
TX_FSL4~0 - Transmitter Frequency Select 4~0.
Select the transmission frequency.
High Frequency
0.7 µ s
0.8 µ s
0.9 µ s
1.0 µ s
Table: Low frequency selected.
TX_FSL4~0
00011
00100
...
11101
Low Frequency
30K Hz
31K HZ
...
56K Hz
Note that those unassigned combinations are reserved.
Table: High frequency selected.
TX_FSL4~0
High Frequency
00011
01000
01011
400K Hz
450K Hz
480K Hz
Note that those unassigned combinations are reserved.
4.9.3 Set7.Reg2 - Remote Infrared Config Register (RIR_CFG)
Reg.
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
RIR_CFG P_PNB SMP_M RXCFS
Default Value
0
0
0
-
TX_CFS
0
0
Bit 2
RX_DM
0
Bit 1
Bit 0
TX_MM1 TX_MM0
0
0
- 74 -
Publication Release Date: March 1998
Revision 0.58