w83977atf Winbond Electronics Corp America, w83977atf Datasheet - Page 98

• Manufacturer Part Number: w83977atf
• Description: Winbond I/o
• Manufacturer: Winbond Electronics Corp America

Table: SHARP ASK-IR receiver frequency range select.
Note that those unassigned combinations are reserved.
4.9.2 Set7.Reg1 - Remote Infrared Transmitter Control (RIR_TXC)
This Register defines the transmitter frequency and pulse width of remote IR.
Bit 7~5:
Note that those unassigned combinations are reserved.
Bit 4~0:
Table: Low frequency selected.
Note that those unassigned combinations are reserved.
Table: High frequency selected.
Note that those unassigned combinations are reserved.
RX_FR2~0
Default Value
RIR_TXC
Reg.
-
TX_FSL4~0
TX_FSL4~0
TX_PW2~0
00011
00100
11101
00011
01000
01011
480.0* 533.3* 457.1 564.7
TX_PW2~0 - Transmitter Pulse Width 2~ 0.
Select the transmission pulse width.
TX_FSL4~0 - Transmitter Frequency Select 4~0.
Select the transmission frequency.
...
TX_PW2 TX_PW1 TX_PW0 TX_FSL4 TX_FSL3 TX_FSL2 TX_FSL1 TX_FSL0
010
011
100
101
Bit 7
001
0
Bit 6
1
010
High Frequency
Low Frequency
RX_FSL4~0 (SHARP ASK-IR)
Bit 5
400K Hz
450K Hz
480K Hz
1
Low Frequency
31K HZ
30K Hz
56K Hz
436.4
...
10.6
6
7
9
011
Bit 4
600.0
s
s
s
0
- 79 -
s
417.4 640.0
Bit 3
100
1
Publication Release Date:April 1998
High Frequency
Bit 2
400.0
0
0.7
0.8
0.9
1.0
101
W83977ATF
685.6
PRELIMINARY
s
s
s
s
Bit 1
0
384.0
Revision 0.52
110
Bit 0
738.5
1