SAA7120H Ver la hoja de datos (PDF) - Philips Electronics

Número de pieza

componentes Descripción

Fabricante

SAA7120H

Video Input Processor VIP

Philips Electronics 

Philips Semiconductors

Digital video encoder

Product specification

SAA7120H; SAA7121H

Table 15 Subaddress 5EH

DATA BYTE

DESCRIPTION

BLNNL

variable blanking level

DECPH

real-time control

CONDITIONS

white-to-sync = 140 IRE;

note 1

BLNNL = 0; note 1

BLNNL = 63 (3FH); note 1

white-to-sync = 143 IRE;

note 2

BLNNL = 0; note 2

BLNNL = 63 (3FH); note 2

logic 0

logic 1

REMARKS

recommended value: BLNNL = 46 (2EH)

output blanking level = 25 IRE

output blanking level = 45 IRE

recommended value: BLNNL = 53 (35H)

output blanking level = 26 IRE

output blanking level = 46 IRE

disable subcarrier phase reset bit from RTCI

enable subcarrier phase reset bit from RTCI

(see Fig.9)

Notes

1. Output black level/IRE = BLNNL × 2/6.29 + 25.4.

2. Output black level/IRE = BLNNL × 2/6.18 + 25.9; default after reset: 35H.

Table 16 Subaddress 5FH

DATA BYTE

DESCRIPTION

BLNVB

variable blanking level during vertical blanking interval is typically identical to value of BLNNL

CCRS

select cross-colour reduction filter in luminance; see Table 17

Table 17 Logic levels and function of CCRS

CCRS1

0

0

1

1

CCRS0

0

1

0

1

DESCRIPTION

no cross-colour reduction; for overall transfer characteristic of luminance see Fig.5

cross-colour reduction #1 active; for overall transfer characteristic see Fig.5

cross-colour reduction #2 active; for overall transfer characteristic see Fig.5

cross-colour reduction #3 active; for overall transfer characteristic see Fig.5

2002 Oct 11

15

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