ADV7189B View Datasheet(PDF) - Analog Devices
Part Name
Description
MFG CO.
'ADV7189B' PDF : 104 Pages View PDF
ADV7189B
CGMS Data Registers
CGMS1[7:0], Address 0x96[7:0],
CGMS2[7:0], Address 0x97[7:0],
CGMS3[7:0], Address 0x98[7:0]
Figure 219H 33 shows the bit correspondence between the analog
video waveform and the CGMS1/CGMS2/CGMS3 registers.
CGMS3[7:4] are undetermined and should be masked out
by software.
Closed Caption Data Registers
CCAP1[7:0], Address 0x99[7:0],
CCAP2[7:0], Address 0x9A[7:0]
20HFigure 34 shows the bit correspondence between the analog
video waveform and the CCAP1/CCAP2 registers. CCAP1[7]
contains the parity bit from the first word. CCAP2[7] contains
the parity bit from the second word. Refer to the GDECAD
Gemstar Decode Ancillary Data Format, Address 0x4C[0]
section.
+100 IRE
+70 IRE
REF
CGMS1[7:0]
CGMS2[7:0]
CGMS3[3:0]
01234567012345670123
0 IRE
–40 IRE
11.2μs
49.1μs ± 0.5μs
2.235μs ± 20ns
Figure 33. CGMS Data Extraction
CRC SEQUENCE
Table 60. CGMS Access Information
Signal Name
Register Location
CGMS1[7:0]
CGMS 1[7:0]
CGMS2[7:0]
CGMS 2[7:0]
CGMS3[3:0]
CGMS 3[3:0]
150d
151d
152d
Address
0x96
0x97
0x98
Register Default Value
Readback Only
Readback Only
Readback Only
50 IRE
10.5 ± 0.25μs
12.91μs
7 CYCLES
OF 0.5035MHz
(CLOCK RUN-IN)
40 IRE
REFERENCE COLOR BURST
(9 CYCLES)
FREQUENCY = FSC = 3.579545MHz
AMPLITUDE = 40 IRE
10.003μs
27.382μs
CCAP1[7:0]
CCAP2[7:0]
0123456 701234567
S
T
P
P
A
A
A
R
R
R
T
I
I
T
T
Y
Y
BYTE 0
BYTE 1
33.764μs
Figure 34. Closed-Caption Data Extraction
Table 61. CCAP Access Information
Signal Name
Register Location
CCAP1[7:0]
CCAP 1[7:0]
CCAP2[7:0]
CCAP 2[7:0]
Address
153d
0x99
154d
0x9A
Register Default Value
Readback Only
Readback Only
Rev. B | Page 50 of 104
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