STV8217 datasheet(81/149 Pages) STMICROELECTRONICS

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STV82x7

Note:

AV_DELAY acts on both LS and HP paths simultaneously (same delay).

12.12 Automatic Standard Recognition

AUTOSTD_CTRL

Automatic Standard Recognition Control Register

Note:

Only standard deviation FM 50K kHz is compatible with other D/K1/K2/K3 standards in Automatic

Standard Recognition Search mode.

FM deviation superior to 350 kHz will degrade strongly NICAM reception due to overlapping of FM

and QPSK IF spectrum in DK-NICAM standard.

Bit Name

Reset

Function

DELAY_TIME

0000000

Audio Delay Time

0000000: 0 ms

...

0111100: 60 ms (48kHz)

...

1011010: 90 ms (32kHz)

DELAY_ON

Audio/video delay is enabled when set.

Address: 8Ah

Type: R/W

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

FORCE_SQUE

LCH

SINGLE_SHOT

DK_DEV[1:0]

LDK_SW

Bit Name

Reset

Function

Bits[7:5]

000

Reserved.

FORCE_SQUELCH

Allow to force squelch detection

0: FM squelch is taken into consideration for MONO detection

1: FM squelch is not taken into consideration for MONO detection

SINGLE_SHOT

Single Shot Mode Selection

0: Single Shot mode is not selected

1: Single Shot mode is selected1

Single_Shot mode can be used before disabling the Automatic Standard Recognition

(Autostandard) to pre-program demodulator registers in a defined standard and reduce I²C

programming in Manual mode

DK_DEV[1:0]

Selects FM deviation configuration to take into account of overmodulation in DK_NICAM standard.

00: FM 50 kHz (Default)

10: FM 350 kHz

01: FM 200 kHz

11: FM 500 kHz

LDK_SW

Makes exclusive the auto search of DK/K1/K2/K3 and L/L’ standard

0: DK/K1/K2/K3 standard auto-search / L/L’ disabled

1: L/L’ standard auto-search / DK/K1/K2/K3 disabled

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