CS8130_05 Datasheet, PDF (19/28 Pages) Cirrus Logic – Multi-Standard Infrared Transceiver

CS8130
CS8130
Register 16, TV Remote Receive Timing Register #1
D3 D2 D1 D0
Register _{TVR3 TVR2 TVR1 TVR0}
Reset (R) _{1 1 1 1}
Register 17, TV Remote Receive Timing Register #2
Register
D3 D2 D1 D0
TVR7 TVR6 TVR5 TVR4
Reset (R) _{1 1 1 1}
Register 18, TV Remote Receive Timing Register #3
D3 D2 D1 D0
Register _{TVR11 TVR10 TVR9 TVR8}
Reset (R) _{0 1 1 1}
BIT
TVR11-0
NAME
TV remote mode
receiver timing
register
TVR = (3.6864E6 *
T) -1
where T = the
incoming bit period,
and TVR = this
register value.
VALUE
000000000000 0
000000000001 1
↓
↓
011111111111 2047R
↓
↓
111111111111 4095
FUNCTION
T = 271 ns
T = 542 ns
↓
T = 555 µs (1800 bps)
↓
T = 1.11 ms
For TV remote receive "oversampled" mode, this register value determines the input data sample rate.
The sample rate is 3.6864 MHz divided by this register value. The sample rate should be set to as fast
as possible, to give the best resolution on the incoming data edges, but should be less than 80% of the
main UART communication baud rate.
For TV remote receive "programmed T period" mode, this register sets the expected incoming bit cell
time (T). The main UART communications rate must be set to at least 20% greater than 1/T.
DS134PFP1 2
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