SAA7183A datasheet(21/45 Pages) PHILIPS

21 / 45 page

1996 Oct 02

Philips Semiconductors

Preliminary speciﬁcation

Digital Video Encoder (EURO-DENC2)

SAA7182A; SAA7183A

Table 15 Subaddress 5E

Notes

1. Output black level/IRE = BLNNL

× 25/63 + 17; recommended value: BLNNL = 58 (3AH) normal.

2. Output black level/IRE = BLNNL

× 26/63 + 17; recommended value: BLNNL = 63 (3FH) normal.

Table 16 Subaddress 5F

Table 17 Logic levels and function of CCRS

DATA BYTE

DESCRIPTION

CONDITIONS

REMARKS

BLNNL

variable blanking level

white-to-sync = 140 IRE(1)

BLNNL = 0

output blanking level = 17 IRE

BLNNL = 63 (3FH)

output blanking level = 42 IRE

white-to-sync = 143 IRE(2)

BLNNL = 0

output blanking level = 17 IRE

BLNNL = 63 (3FH)

output blanking level = 43 IRE

DECTYP

RTCI

logic 0

real time control input from SAA7151B

logic 1

real time control input from SAA7111

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

CCRS1

CCRS0

FUNCTION

no cross colour reduction; for overall transfer characteristic of luminance see Fig.7

cross colour reduction #1 active; for overall transfer characteristic see Fig.7

cross colour reduction #2 active; for overall transfer characteristic see Fig.7

cross colour reduction #3 active; for overall transfer characteristic see Fig.7

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