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IT8673F
101
11.8.6.3 CIR Receiver Control Register (RCR)
The RCR, an 8-bit
read/write
register, is used to control the CIR Receiver.
Address: Base address + 2h
Bit
7
R/W
Default
0b
Description
R/W
Receiver Data Without Sync. (RDWOS)
This bit is used to control the sync. logic for Receiving data.
Set this bit to “1” to obtain the receiving data without sync. logic.
Set this bit to “0” to obtain the receiving data in sync. logic.
High-Speed Carrier Frequency Select (HCFS)
This bit is used to select Carrier Frequency between high-speed and
low-speed.
0
30-58 kHz (Default)
1
400-500 kHz
Receiver Enable (RXEN)
This bit is used to enable Receiver function. Enable Receiver and the RXACT
will be active if the selected carrier frequency is received.
Set this bit to “1” to enable the Receiver function.
Set this bit to “0” to disable the Receiver function.
Receiver Demodulation Enable (RXEND)
This bit is used to control the Receiver Demodulation logic. If the Receiver
device can not demodulate the correct carrier, set this bit to “1”.
Set this bit to “1” to enable Receiver Demodulation logic.
Set this bit to “0” to disable Receiver Demodulation logic.
Receiver Active (RXACT)
This bit is used to control the Receiver operation.
This bit is set to “0” when the Receiver is inactive.
This bit will be set to “1” when the Receiver detects a pulse (RXEND=0) or
pulse-train (RXEND=1) with correct carrier frequency. The Receiver then
starts to sample the input data when Receiver Active is set. Write a “1” to this
bit to clear the Receiver Active condition and make the Receiver enter the
inactive mode.
Receiver Demodulation Carrier Range (RXDCR[2:0])
These three bits are used to set the tolerance of the Receiver Demodulation
carrier frequency. See Table 11-48 and Table 11-49.
6
R/W
0b
5
R/W
0b
4
R/W
0b
3
R/W
0b
2-0
R/W
001b