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LC7455 Scheda tecnica(PDF) 2 Page - Sanyo Semicon Device

Il numero della parte LC7455
Spiegazioni elettronici  Closed Caption Signal Extraction IC
PDF  13 Pages
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Produttore elettronici  SANYO [Sanyo Semicon Device]
Homepage  https://www.sanyo-av.com/us/
Logo SANYO - Sanyo Semicon Device

LC7455 Scheda tecnica(HTML) 2 Page - Sanyo Semicon Device

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Pin Assignments
Note: VDD1 and VSS1 are the power supply for the digital block, and VDD2 and VSS2 are the power supply for the analog block. Use a circuit similar to the
one shown below to minimize mutual interference due to noise from these blocks.
No. 5680-2/13
LC7455A, 7455M
Pin Functions
Pin
Pin No.
Pin function
DIP16
MFP18
Mode 1
Mode2
Mode3
Mode4
VSS1
1
1
Ground
TEST
2
2
Test pin. Must be left open during normal operation.
LN21
3
3
Line 21H pulse output (even field)
Line 21H pulse output
Line 22H pulse output
(both fields)
(both fields)
O/E/CFOUT
4
4
Field discrimination pulse
Ceramic oscillator output
Field discrimination pulse output
output
HS/CFIN
5
5
Sync separator Hsync
Ceramic oscillator input
Hsync pulse input
pulse output
CPDT
6
6
Caption data output (n-channel open-drain output)
SCKIN
7
7
Caption data transfer clock input
CE
8
8
Chip select input
VDD1
9
11
Power supply
MOD0
10
12
Leave open
Short to the power supply
Leave open
Short to the power supply
CVIN
11
13
Composite video input
VCOR
12
14
Connection for an external resistor to control the built-in VCO oscillator frequency
MOD1
13
15
Leave open
Short to the power supply
VDD2
14
16
Power supply
VSS2
15
17
Ground
CP
16
18
Connection for the filter used by the built-in PLL
Power
supply
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