STV0056A STMicroelectronics, STV0056A Datasheet - Page 8

• Manufacturer Part Number: STV0056A
• Description: Video ICs Analog Sound/Video
• Manufacturer: STMicroelectronics
• Type: Audio DSPr

Specifications of STV0056A

• Maximum Operating Temperature: + 70 C
• Package / Case: PDIP-56
• Minimum Operating Temperature: 0 C
• Mounting Style: Through Hole
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

STV0056A
8/26
AUDIO SWITCHING
FM DEMODULATION BLOCK DIAGRAM
AUDIO PLL
DEC RTN
AUX IN
AMPLK R
AMPLK L
AGC R
FM IN
AGC L
STV0042/STV0056A
DEEMPHASIS
AGC
AGC
+ ANRS
AUDIO
V
V
REF
REF
VOL OUT AUX OUT
DETECTOR 1
DETECTOR 2
DETECTOR 1
DETECTOR 2
K
K
K
LEVEL
LEVEL
LEVEL
LEVEL
1a
1b
1c
Reg8 b4
Reg8 b0
K
K
K
5b
5c
5a
Amp. Detect
Amp. Detect
Bias
Bias
DEC OUT
SW1
SW3
WATCHDOG
WATCHDOG
K
K
K
6c
6a
6b
Phase
Detect
Phase
Detect
K
4
K
b
b
b
b
a
c
a
c
: a
1
2
1
2
2
b
90
90
FM dev.
FM dev.
0
0
Select.
Select.
V
AUDIO L
V
K
a
a
a
a
b
b
b
b
REF
REF
VCO
VCO
3
ANRS input non-scrambled audio
ANRS input descrambled audio
SYNTHESIZER
No ANRS, No De-emphasis
No ANRS, 50 s
No ANRS, 75 s
No ANRS, J17
ANRS, No De-emphasis
ANRS, 50 s
ANRS, 75 s
ANRS, J17
AUDIO R
SW2
SW4
CPUMP R
CPUMP L
DET R
DET L