saa7120 NXP Semiconductors, saa7120 Datasheet - Page 16

• Manufacturer Part Number: saa7120
• Description: Digital Video Encoder Condenc
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Table 15 Subaddress 5D
Notes
1. Output black level/IRE = BLCKL
2. Output black level/IRE = BLCKL
Table 16 Subaddress 5E
Notes
1. Output black level/IRE = BLNNL
2. Output black level/IRE = BLNNL
Table 17 Subaddress 5F
Table 18 Logic levels and function of CCRS
1997 Jan 06
BLCKL
DECOE
BLNNL
DECPH
BLNVB
CCRS
DATA BYTE
DATA BYTE
DATA BYTE
Digital Video Encoder (ConDENC)
CCRS1
0
0
1
1
variable black level; input
representation
accordance with
“CCIR 601”
real time control
variable blanking level
real time control
variable blanking level during vertical blanking interval is typically identical to value of BLNNL
select cross colour reduction filter in luminance; see Table 18
CCRS0
DESCRIPTION
DESCRIPTION
0
1
0
1
no cross colour reduction; for overall transfer characteristic of luminance see Fig.3
cross colour reduction #1 active; for overall transfer characteristic see Fig.3
cross colour reduction #2 active; for overall transfer characteristic see Fig.3
cross colour reduction #3 active; for overall transfer characteristic see Fig.3
2/6.29 + 34.0
2/6.18 + 31.7
2/6.29 + 25.4
2/6.18 + 25.9
white-to-sync = 140 IRE
white-to-sync = 143 IRE
logic 0
logic 1
white-to-sync = 140 IRE
white-to-sync = 143 IRE
logic 0
logic 1
BLCKL = 0
BLCKL = 63 (3FH)
BLCKL = 0
BLCKL = 63 (3FH)
BLNNL = 0
BLNNL = 63 (3FH)
BLNNL = 0
BLNNL = 63 (3FH)
CONDITIONS
CONDITIONS
16
DESCRIPTION
DESCRIPTION
(1)
(2)
(1)
(2)
recommended value: BLCKL = 42 (2AH)
output black level = 34 IRE
output black level = 54 IRE
recommended value: BLCKL = 35 (23H)
output black level = 32 IRE
output black level = 52 IRE
disable odd/even field control bit from RTCI
enable odd/even field control bit from RTCI
(see Fig.10)
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.10)
SAA7120; SAA7121
REMARKS
REMARKS
Preliminary specification