CXA2050 查看數據表（PDF） - Sony Semiconductor

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CXA2050

Y/C/RGB/D for PAL/NTSC Color TVs

Sony Semiconductor 

Pin

No.

Symbol

7 SECAMREF

8 SGND1

9 – (R-Y) OUT

10 – (B-Y) OUT

11 YOUT

CXA2050S

Equivalent circuit

Description

6k 20p

SECAM decoder interface. This pin

serves as both a 4.43MHz output and as

7

7.2V

a SECAM identification input/output pin.

250µA

—

GND for Y/C block.

Color difference signal outputs. Go to

200µA

high impedance when the SECAM

system is detected.

9

Standard output levels for 75% CB:

10

B-Y: 0.665Vp-p

R-Y: 0.525Vp-p

5.7VDC when killer is ON.

500

Luminance signal output.

Black level is 3.5VDC.

11

Standard output level for 100 IRE input:

30k

1Vp-p

400µA

12 SCPOUT

1k

Sand castle pulse output. The 0 to 5V

BGP pulse, the phase of which is

12

controlled through the bus, is

superimposed with the 0 to 2V H and

10k

1k

VBLK pulse for output.

13 YRET

13

1.5k

Luminance signal input.

Clamped to 4.8V at the burst timing.

Standard input level for 100 IRE input:

1Vp-p

70k

–5–

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