Datasheet

ADV7188
Rev. A | Page 66 of 112
05478-037
ACTIVE
VIDEO
V
DP_CGMS_WSS_
DATA_1[5:0]
VDP_CGMS_WSS_DATA_2
RUN-IN
SEQUENCE
START
CODE
0 1 2 3 4 5 6 7 0 1 2 3 4 5
11.0µs
38.4µs
42.5µs
Figure 39. WSS Waveform
05478-038
012 3 4 5 6 7 0 1 2 3 4 5 6 7 0 1 2 3
VDP_CGMS_WSS_DATA_1
VDP_CGMS_WSS_
DATA_0[3:0]
VDP_CGMS_WSS_DATA_2REF
+100 IRE
+70 IRE
0 IRE
–40 IRE
11.2µs
49.1µs ± 0.5µs
CRC SEQUENCE
2.235µs ± 20ns
Figure 40. CGMS Waveform
0
REFERENCE COLOR BURST
(NINE CYCLES)
FREQUENCY = F
SC
= 3.579545MHz
AMPLITUDE = 40 IRE
1
SEVEN CYCLES
OF 0.5035MHz
(CLOCK RUN IN)
2 3 4 5 6 7 0 1 2 3 4 5 67
P
A
R
I
T
Y
S
T
A
R
T
P
A
R
I
T
Y
VDP_CCAP_D ATA_0
33.764µs
10.003µs
10.5 ± 0.25µs 12.91µs
27.382µs
50 IRE
40 IRE
05478-039
VDP_CCAP_D ATA_1
Figure 41. CC Waveform and Decoded Data Correlation
Table 79. CGMS Readback Registers
1
Address (User Sub Map)
Signal Name Register Location Dec Hex
CGMS_WSS_DATA_0 [3:0] VDP_CGMS_WSS_DATA_0 [3:0] 125d 0x7D
CGMS_WSS_DATA_1 [7:0] VDP_CGMS_WSS_DATA_1 [7:0] 126d 0x7E
CGMS_WSS_DATA_2 [7:0] VDP_CGMS_WSS_DATA_2 [7:0] 127d 0x7F
1
The register is a readback register; the default value does not apply.
Table 80. Closed Captioning Readback Registers
1
Address (User Sub Map)
Signal Name Register Location Dec Hex
CCAP_BYTE_1 [7:0] VDP_CCAP_DATA_0 [7:0] 121d 0x79
CCAP_BYTE_2 [7:0] VDP_CCAP_DATA_1 [7:0] 122d 0x7A
1
The register is a readback register; the default value does not apply.