SAA7182A Datasheet, PDF (21/45 Pages) NXP Semiconductors – Digital Video Encoder EURO-DENC2

Philips Semiconductors
Digital Video Encoder (EURO-DENC2)
Preliminary specification
SAA7182A; SAA7183A
Table 15 Subaddress 5E
DATA BYTE
DESCRIPTION
BLNNL
variable blanking level
DECTYP RTCI
CONDITIONS
white-to-sync = 140 IRE⁽¹⁾
BLNNL = 0
BLNNL = 63 (3FH)
white-to-sync = 143 IRE⁽²⁾
BLNNL = 0
BLNNL = 63 (3FH)
logic 0
logic 1
REMARKS
output blanking level = 17 IRE
output blanking level = 42 IRE
output blanking level = 17 IRE
output blanking level = 43 IRE
real time control input from SAA7151B
real time control input from SAA7111
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
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
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
1996 Oct 02
21