STV8203D datasheet(18/31 Pages) STMICROELECTRONICS

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AO-STAT0 (AUTOSTANDARD Status 0)

Address

: 0B

Type

: R

bit 7

bit 6

bit 5

bit 4

bit 3

bit 2

bit 1

bit 0

STD-DET

SID1

SID0

AOMUTE

AM-MONO

SWD (MONITOR)

STD-DET

: Standard Detection :

0 = no standard detected

1 = indicates that an expected standard has been identified.

SID [1:0]

: Standard Identification of the demodulator input

indicate the standard which has been identified :

SID[1:0]

Standard

I FM/NICAM

B/G FM - Zweiton

B/G FM/NICAM

L/L’ AM/NICAM

AOMUTE

: Audio Output Mute

indicates that the audio outputs are muted (=1); only when the demodulator is selected as

audio source. This would be the case during standard search or no signal found.

AM-MONO

: AM selected

indicates if the AM input (MIN) has been selected (=1); normally used for system L.

SWD

: Switch Dematrix Mode

indicate the setting of the SWD block :

SWD[2:0]

Mode description

De-emphasis

000

FM CH1 mono

µs

001

Zweiton mono (CH1)

010

Zweiton dual mono

011

Zweiton stereo

100

Unused

101

NICAM mono

J-17

110

NICAM dual mono

111

NICAM stereo

AO-STAT1 (AUTOSTANDARD Status 1 ; demodulator signal detectors)

Address

: 0C

Type

: R

bit 7

bit 6

bit 5

bit 4

bit 3

bit 2

bit 1

bit 0

FM2-CAR

FM2-SQ

FM1-CAR

FM1-SQ

QPSK-LK

ZW-DET

ZW-ST

ZW-DM

FM2-CAR

: FM2 Carrier Detector Lock

FM2-SQ

: FM2 Squelch Detector Lock

FM1-CAR

: FM1 Carrier Detector Lock

FM1-SQ

: FM1 Squelch Detector Lock

QPSK-LK

: QPSK Lock

ZW-DET

: Zweiton Pilot Lock

ZW-ST

: Zweiton Stereo Lock

ZW-DM

: Zweiton Dual Mono Lock

This register allows direct access to the demodulator signal detectors ; 1 = detected.

PROGRAMMING THE DEVICE (continued)

STV8203

18/31

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