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STV8217T Datasheet(PDF) 81 Page - STMicroelectronics

No. de pieza STV8217T
Descripción Electrónicos  Digital Audio Decoder/Processor for A2 and NICAM Television/Video Recorders
PDF  149 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STV8217T Datasheet(HTML) 81 Page - STMicroelectronics

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STV82x7
Register List
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
0
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
00
0
FORCE_SQUE
LCH
SINGLE_SHOT
DK_DEV[1:0]
LDK_SW
Bit Name
Reset
Function
Bits[7:5]
000
Reserved.
FORCE_SQUELCH
0
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
0
Single Shot Mode Selection
0: Single Shot mode is not selected
1: Single Shot mode is selected1
1.
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]
00
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
1
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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