STV8236 datasheet(64/97 Pages) STMICROELECTRONICS

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STV82x6

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PEAK_DET_STATR

Peak Level Detector Status Register

9.11

Automatic Standard Recognition

AUTO_CTRL

Automatic Standard Recognition Control Register

Address (hex): 4Dh

Type: R

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

PEAK_LEVEL_RIGHT[7:0]

Bit Name

Reset

Function

PEAK_LEVEL_

RIGHT[7:0]

00000000

Displays the Absolute Peak Level of the audio source selected. The measured value is

updated continuously every 64 ms. The range varies linearly from the full scale (0 dB) down to

1/256 of the full scale (-48 dB).

For more information, refer to register PEAK_DET_STATL.

Address (hex): 50h

Type: R/W

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

IRQ

SINGLE_SHOT

DK_DEV[1:0]

LDK_SW

Bit Name

Reset

Function

Bits[7:5]

000

Reserved.

IRQ

This flag (output on IRQ pin) is set to ON by the AUTOSTD when the standard recognition status

has changed. The external microprocessor will detect this signal and will run the OSD procedure.

This procedure must first reset via I²C the IRQ flag and then read the detection status in the

registers (NICAM_STAT, ZWT_STAT, AUTO_STAT and CH_MX)

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 (AUTOSTD)

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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