STV82X8 datasheet(55/157 Pages) STMICROELECTRONICS

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STV82x8

I2S_STAT

I²S Synchronization Status Register

Bit Name

Reset

Function

I2S_PLL

Selects the i2s source for the synchronization with the synthesizer (at 48KHz only)

0: I2S_LR_CLK selected

1: I2SA_LR_CLK selected

SYNC_SIGN

Reverse the sign of the loop - To be used in case of gain inversion of the Frequency Synthesizer

I2S_SRC

Selects the i2s source for the src

0: I2S_LR_CLK selected

1: I2SA_LR_CLK selected

LOCK_TH[1:0]

Lock Detector Threshold Programming

00: ±1 CLK period error of accumulation

01: ±2 CLK period error of accumulation

10: ±4 CLK period error of accumulation

11: ±8 CLK period error of accumulation

LOCK_MODE

Lock Detector Mode

0: Lock when accumulation error within lock threshold and LR detected (period counter not satu-

rated)

1: Lock when only accumulation error within lock threshold. Don’t care of the LR detection

SYNC_CST[1:0]

Synchronization Time Constant

Defines the measurement period of LR

00: Half period measured (lowest accuracy)

01: One full period measured

10: Two full periods measured

11: Four full periods measured (highest accuracy)

Address: 05h

Type: R/W

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

0000

LR_OFF

LOCK_FLAG

Bit Name

Reset

Function

Bits[7:2]

Reserved.

LR_OFF

LR Signal Detection

0: LR signal detected and correct

1: Missing LR pulses detected

LOCK_FLAG

Lock Flag allowing unmute of Audio Output

STV82X8 Datasheet(PDF) 55 Page - STMicroelectronics

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