
W83977F/ W83977AF
PRELIMINARY
Publication Release Date: March 1998
- 72 -
Revision 0.58
Bit 3~0:
F_FG3~0 - FIR Beginning Flag Number
These bits define the number of transmitter
Preamble Flag
in FIR. Note that the number
of FIR start flag should be equal to
sixteen
which is defined in IrDA 1.1 physical layer.
The default value is 16.
M_FG3~0
0000
0001
0010
0011
0100
0101
0110
0111
Beginning Flag Number
Reserved
1
2
3
4
5
6
8
M_FG3~0
1000
1001
1010
1011
1100
1101
1110
1111
Beginning Flag Number
10
12
16
(Default)
20
24
28
32
Reserved
4.9 Set7 - Remote control and IR module selection registers
Address Offset
0
1
2
3
4
5
6
7
Register Name
RIR_RXC
RIR_TXC
RIR_CFG
SSR
IRM_SL1
IRM_SL2
IRM_SL3
IRM_CR
Register Description
Remote Infrared Receiver Control
Remote Infrared Transmitter Control
Remote Infrared Config Register
Sets Select Register
Infrared Module (Front End) Select 1
Infrared Module Select 2
Infrared Module Select 3
Infrared Module Control Register
4.9.1 Set7.Reg0 - Remote Infrared Receiver Control (RIR_RXC)
Reg.
RIR_RXC
Default Value
Bit 7
RX_FR2
0
Bit 6
RX_FR1
0
Bit 5
RX_FR0 RX_FSL4 RX_FSL3 RX_FSL2 RX_FSL1 RX_FSL0
1
0
1
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
0
0
1
This register defines frequency range of receiver of remote IR.
Bit 7~5:
RX_FR2~0 - Receiver Frequency Range 2~0.
These bits select the input frequency range of the receiver. It is implemented through a
band pass filter, i.e., only the input signals whose frequency lies in the range defined in
this register will be received.
Bit 4~0:
RX_FSL4~0 - Receiver Frequency Select 4~0.
Select the operation frequency of receiver.