HMP8117_07 Datasheet, PDF(2/45 Page) Intersil Corporation

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HMP8117_07 Datasheet, PDF (2/45 Pages) Intersil Corporation – NTSC/PAL Video Decoder

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Functional Block Diagram

SEE ANALOG FRONT END BLOCK DIAGRAM

SEE DIGITAL PROCESSING BLOCK DIAGRAM

EXTERNAL

ANTI-ALIAS

FILTER

YOUT

YIN

CVBS1

CVBS2

CVBS3(Y)

INPUT CLAMP,

MUX,

COARSE AGC,

DC-RESTORE

ADC

LCAP

EXTERNAL C

ANTI-ALIAS

FILTER

COARSE AGC

DC-RESTORE

CCAP

ADC

MACROVISION

DETECT

VBI

DETECTION &

DECODING LOGIC

YIN[7:0]

FINE AGC,

DC-RESTORE

CONTROL

CIN[7:0]

INPUT

SAMPLE

RATE

CONVERTER

Y/C

SEPARATION

AND

USER

ADJUSTS

OUTPUT

SAMPLE

RATE

CONVERTER

P[15:0]

HSYNC

OUTPUT VSYNC

TIMING

AND BLANK

DATA

FIFO

FIELD

DVALID

VBIVALID

SYNC-TIP, BACKPORCH TIMING

MICROPROCESSOR

INTERFACE AND

CONTROL

RESET INTREQ

SA SCL SCL

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