LC7455 查看數據表（PDF） - SANYO -> Panasonic

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产品描述 (功能)

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LC7455

Closed Caption Signal Extraction IC

SANYO -> Panasonic 

Pin Assignments

LC7455A, 7455M

Top view

Pin Functions

Pin No.

Pin

DIP16 MFP18

Mode 1

Mode2

Pin function

Mode3

Mode4

VSS1

TEST

1

1 Ground

2

2 Test pin. Must be left open during normal operation.

LN21

3

3 Line 21H pulse output (even field)

Line 21H pulse output

(both fields)

Line 22H pulse output

(both fields)

O/E/CFOUT 4

Field discrimination pulse

4 output

Ceramic oscillator output

Field discrimination pulse output

HS/CFIN

5

Sync separator Hsync

5 pulse output

Ceramic oscillator input

Hsync pulse input

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

MOD0

9

11 Power supply

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

VSS2

CP

14

16 Power supply

15

17 Ground

16

18 Connection for the filter used by the built-in PLL

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.

Power

supply

No. 5680-2/13

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