W83877ATF Datasheet, PDF (80/191 Pages) Winbond – enhanced version from Winbonds most popular I/O chip W83877F

W83877ATF
Table: SHARP ASK-IR receiver frequency range select.
RX_FSL4~0 (SHARP ASK-IR)
RX_FR2~
001
010
011
100
101
110
0
-
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 the other non-defined values are reserved.
4.3.9.1 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.
Selects the transmission pulse width.
TX_PW2~0
Low Frequency
010
6 µs
011
7 µs
100
9 µs
101
10.6 µ s
Note that the other non-defined TX_PW are reserved.
Bit 4~0:
TX_FSL4~0 - Transmitter Frequency Select 4~0.
Selects the transmission frequency.
Table: Low frequency selected.
TX_FSL4~0
Low Frequency
00011
30K Hz
00100
31K HZ
...
...
11101
56K Hz
Note that the other non-defined TX_FSL4~0 are reserved.
High Frequency
0.7 µ s
0.8 µ s
0.9 µ s
1.0 µ s
- 76 -
Publication Release Date: April 1998
Version 0.51