STV8206 Datasheet, PDF (55/97 Pages) STMicroelectronics – Multistandard TV Audio Processor and Digital Sound Demodulator

STV82x6
CAROFFSET2
Address (hex): 3Ah
Type: R/W
Bit 7
Bit 6
Register List
Channel 2 DCO Carrier Offset Compensation
Bit 5
Bit 4
Bit 3
CAROFFSET2[7:0] (S)
Bit 2
Bit 1
Bit 0
Bit Name
CAROFFSET2
[7:0]
Reset
Function
00000000
This value is used to correct the carrier frequency offset of the incoming IF signal. Automatic
frequency control in FM mode can be implemented by registers FM_DCR and FM_DCL.
A DCO frequency offset (in two’s complement format) is added to the pre-programming value
by AUTOTSD in the CARFQ2 registers (corresponding to the standard IF carrier frequency).
The programmable carrier offset ranges from -192 kHz to +190.5 kHz with a resolution of
1.5 kHz.
For standard FM deviation, the value displayed by register FM_DCR can be directly loaded in in
register CAROFFSET2 to exactly compensate the carrier offset on Channel 2.
9.8 NICAM Registers
NICAM_CTRL
NICAM Decoder Control Register
Address (hex): 3Dh
Type: R/W
Bit 7
Bit 6
0
0
Bit 5
0
Bit 4
0
Bit 3
0
Bit 2
DIF_POL
Bit 1
ECT
Bit 0
MAE
Bit Name
Bits[7:3]
DIF_POL
ECT
MAE
Reset
Function
00000 Reserved.
0 0: No polarity inversion (Default)
1: Polarity inversion of the differential decoding
0 Error Counter Timer: Defines the NICAM error measurement period
0: 128 ms (Default)
1: 64 ms
0 Max. Allowed Errors. Defines the NICAM error decoding for mute function.
0: 511 Max (Default)
1: 255 Max
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