STV8203 Datasheet, PDF (19/31 Pages) STMicroelectronics – MULTISTANDARD TV SOUND DEMODULATOR

STV8203
PROGRAMMING THE DEVICE (continued)
AO-STAT2 (AUTOSTANDARD Status 2 ; NICAM)
Address
Type
: 0D
:R
bit 7
NIC-DET
bit 6
F-MUTE
bit 5
LOA
bit 4
bit 3
bit 2
NICAM CBI
bit 1
bit 0
N-MUTE
NIC-DET
F-MUTE
LOA
NICAM CBI
: NICAM detected
indicates a valid NICAM signal found (1 = detected).
: Frame Mute
indicates the NICAM decoder is muted because the superframe alignment has been lost.
: Loss of frame Alignment word
indicates loss of alignment to the frame alignment word in the NICAM decoder; the bit error
rate is too high or no signal is present.
: indicates the received NICAM control bits with the following interpretation :
CBI[4:1]
X000
X001
X010
X011
X1XX
0XXX
1XXX
Nicam Signal Description
Stereo
ch1 = mono, ch2 = data
Dual Mono
704Kbit/s data
FM selected during additional coding options
Nicam different to FM mono
Nicam mono(M1) or stereo = FM mono
N-MUTE
: NICAM Mute
indicates that the NICAM decoder is muted (it may be unmuted by AO-CONTROL bit 5).
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