W83977ATF Datasheet, PDF (98/207 Pages) Winbond – WINBOND I/O

W83977ATF
PRELIMINARY
Table: SHARP ASK-IR receiver frequency range select.
RX_FSL4~0 (SHARP ASK-IR)
RX_FR2~0
001
010
011
100
101
110
-
480.0* 533.3* 457.1 564.7 436.4 600.0 417.4 640.0 400.0 685.6 384.0 738.5
Note that those unassigned combinations are reserved.
4.9.2 Set7.Reg1 - Remote Infrared Transmitter Control (RIR_TXC)
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.
Table: Low frequency selected.
TX_FSL4~0
Low Frequency
00011
00100
...
11101
30K Hz
31K HZ
...
56K Hz
Note that those unassigned combinations are reserved.
Table: High frequency selected.
TX_FSL4~0
00011
01000
01011
High Frequency
400K Hz
450K Hz
480K Hz
Note that those unassigned combinations are reserved.
High Frequency
0.7 µ s
0.8 µ s
0.9 µ s
1.0 µ s
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Publication Release Date:April 1998
Revision 0.52