2004 Mar 01
46
Philips Semiconductors
Product specification
Digital video encoder
SAA7102; SAA7103
Table 53 Subaddress 5AH; note 1
Note
1. The default after reset is 00H.
Table 54 Subaddresses 5BH and 5DH
Table 55 Subaddresses 5CH and 5EH
Table 56 Subaddress 5DH
Notes
1. Output black level/IRE = BLCKL
×
2/6.29 + 28.9.
2. Output black level/IRE = BLCKL
×
2/6.18 + 26.5.
DATA BYTE
DESCRIPTION
VALUE
RESULT
CHPS
phase of encoded colour subcarrier
(including burst) relative to horizontal
sync; can be adjusted in steps of
360/256 degrees
6BH
PAL B/G and data from input ports in master mode
16H
PAL B/G and data from look-up table
25H
NTSC M and data from input ports in master mode
46H
NTSC M and data from look-up table
DATA BYTE
DESCRIPTION
CONDITIONS
REMARKS
GAINU
variable gain for
C
B
signal; input
representation in
accordance with
“ITU-R BT.601”
white-to-black = 92.5 IRE
GAINU =
−
2.17
×
nominal to +2.16
×
nominal
GAINU = 0
output subcarrier of U contribution = 0
GAINU = 118 (76H)
output subcarrier of U contribution = nominal
white-to-black = 100 IRE
GAINU =
−
2.05
×
nominal to +2.04
×
nominal
GAINU = 0
output subcarrier of U contribution = 0
GAINU = 125 (7DH)
output subcarrier of U contribution = nominal
DATA BYTE
DESCRIPTION
CONDITIONS
REMARKS
GAINV
variable gain for
C
R
signal; input
representation in
accordance with
“ITU-R BT.601”
white-to-black = 92.5 IRE
GAINV =
−
1.55
×
nominal to +1.55
×
nominal
GAINV = 0
output subcarrier of V contribution = 0
GAINV = 165 (A5H)
output subcarrier of V contribution = nominal
white-to-black = 100 IRE
GAINV =
−
1.46
×
nominal to +1.46
×
nominal
GAINV = 0
output subcarrier of V contribution = 0
GAINV = 175 (AFH)
output subcarrier of V contribution = nominal
DATA BYTE
DESCRIPTION
CONDITIONS
REMARKS
BLCKL
variable black level;
input representation
in accordance with
“ITU-R BT.601”
white-to-sync = 140 IRE;
note 1
recommended value: BLCKL = 58 (3AH)
BLCKL = 0; note 1
output black level = 29 IRE
BLCKL = 63 (3FH); note 1 output black level = 49 IRE
white-to-sync = 143 IRE;
note 2
recommended value: BLCKL = 51 (33H)
BLCKL = 0; note 2
output black level = 27 IRE
BLCKL = 63 (3FH); note 2 output black level = 47 IRE