SAA7104E Datasheet, PDF (34/70 Pages) NXP Semiconductors – Digital video encoder

Philips Semiconductors
Digital video encoder
Product specification
SAA7104E; SAA7105E
Table 40 Subaddress 5AH; note 1
DATA BYTE
DESCRIPTION
CHPS
phase of encoded colour subcarrier
(including burst) relative to horizontal
sync; can be adjusted in steps of
360/256 degrees
Note
1. The default after reset is 00H.
VALUE
6BH
16H
25H
46H
RESULT
PAL B/G and data from input ports in master mode
PAL B/G and data from look-up table
NTSC M and data from input ports in master mode
NTSC M and data from look-up table
Table 41 Subaddresses 5BH and 5DH
DATA BYTE DESCRIPTION
GAINU
variable gain for
C_B signal; input
representation in
accordance with
“ITU-R BT.601”
CONDITIONS
white-to-black = 92.5 IRE
GAINU = 0
GAINU = 118 (76H)
white-to-black = 100 IRE
GAINU = 0
GAINU = 125 (7DH)
REMARKS
GAINU = −2.17 × nominal to +2.16 × nominal
output subcarrier of U contribution = 0
output subcarrier of U contribution = nominal
GAINU = −2.05 × nominal to +2.04 × nominal
output subcarrier of U contribution = 0
output subcarrier of U contribution = nominal
Table 42 Subaddresses 5CH and 5EH
DATA BYTE DESCRIPTION
GAINV
variable gain for
C_R signal; input
representation in
accordance with
“ITU-R BT.601”
CONDITIONS
white-to-black = 92.5 IRE
GAINV = 0
GAINV = 165 (A5H)
white-to-black = 100 IRE
GAINV = 0
GAINV = 175 (AFH)
REMARKS
GAINV = −1.55 × nominal to +1.55 × nominal
output subcarrier of V contribution = 0
output subcarrier of V contribution = nominal
GAINV = −1.46 × nominal to +1.46 × nominal
output subcarrier of V contribution = 0
output subcarrier of V contribution = nominal
Table 43 Subaddress 5DH
DATA BYTE DESCRIPTION
BLCKL
variable black level;
input representation
in accordance with
“ITU-R BT.601”
CONDITIONS
REMARKS
white-to-sync = 140 IRE; recommended value: BLCKL = 58 (3AH)
note 1
BLCKL = 0; note 1
output black level = 29 IRE
BLCKL = 63 (3FH); note 1 output black level = 49 IRE
white-to-sync = 143 IRE; recommended value: BLCKL = 51 (33H)
note 2
BLCKL = 0; note 2
output black level = 27 IRE
BLCKL = 63 (3FH); note 2 output black level = 47 IRE
Notes
1. Output black level/IRE = BLCKL × 2/6.29 + 28.9.
2. Output black level/IRE = BLCKL × 2/6.18 + 26.5.
2004 Mar 04
34