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STV8247DSX Datasheet(PDF) 63 Page - STMicroelectronics

Part # STV8247DSX
Description  Digital Audio Decoder/Processor for A2 and NICAM Television/Video Recorders
PDF  156 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STV8247DSX Datasheet(HTML) 63 Page - STMicroelectronics

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STV82x7
Register List
I2S_CTRL
I2S Synchronization Control Register
I2S_STAT
I²S Synchronization Status Register
Address: 04h
Type: R/W
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
SYNC_OFF
SYNC_SIGN
0
LOCK_TH[1:0]
LOCK_MODE
SYNC_CST[1:0]
Bit Name
Reset
Function
SYNC_OFF
0
Open the loop of synchronization - External PCM clock is used internally and must be equal to
512 x fSOUT
SYNC_SIGN
0
Sign of the loop reversion (to be used in case of gain inversion of the Frequency Synthesizer)
Bit 5
0
Reserved
LOCK_TH[
1:0]
00
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_MOD
E
0
Lock Detector Mode
0: Lock when accumulation error within lock threshold and LR detected (period counter not
saturated)
1: Lock when only accumulation error within lock threshold. Don’t care about the LR detection
SYNC_CST[
1:0]
01
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
0
0
0
0
0
0
LR_OFF
LOCK_FLAG
Bit Name
Reset
Function
Bits[7:2]
0
Reserved.
LR_OFF
0
LR Signal Detection
0: LR signal detected and correct
1: Missing LR pulses detected
LOCK_FLAG
0
Lock Flag allowing unmute of Audio Output



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