STV82X7 datasheet(91/156 Pages) STMICROELECTRONICS

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STV82x7

Note:

The time-out default value is optimum and does not normally need to be changed.

AUTOSTD_STATUS

Detection Standard Status Register

Bit Name

Reset

Function

FM_TIME[1:0]

FM/AM Detection Time-out

00 : 16 ms

10: 48 ms (Default)

01: 32 ms

11: 64 ms

NICAM_TIME[2:0]

100

NICAM Detection Time-out

000: 96 ms

100: 224 ms (Default)

001: 128 ms

101: 256 ms

010: 160 ms

110: 288 ms

011: 192 ms

111: 320 ms

ZWEITON_TIME[2:0]

100

Zweiton Detection Time-out

000: forbidens

100: 1280 ms (Default)

001: 512 ms

101: 1536 ms

010: 768 ms

110: 1792 ms

011: 1024 ms

111: 2040 ms

Address: 8Eh

Type: R

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

STEREO_ID

STEREO_OK

MONO_OK

AUTOSTD_ON

STEREO_SID[1:0]

MONO_SID[1:0]

Bit Name

Reset

Function

STEREO_ID

Stereo Mode Detection flag activated when all of the following conditions are true:

1. Stereo standard coming from the demodulator is selected on the Loudspeakers output

2. Stereo transmission modes are:

- Zweiton Stereo Carrier AND Stereo Modulation (indifferently German or Korean standard)

- NICAM stereo with backup (CBI = 1000)

- NICAM stereo with no backup (CBI = 0000)

3. Stereo is selected for loudspeaker ouput (bit LS_LANGUAGE[1:0])

AUTOSTD_ON

Automatic Standard Recognition System Status

0: Automatic Standard Recognition System is OFF

1: Automatic Standard Recognition System is ON

STEREO_SID[1:0]

Identification of the detected TV sound standard. See Table 20.

MONO_SID[1:0]

STEREO_OK

STEREO STANDARD DETECTED

MONO_OK

MONO STANDARD DETECTED

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