ADV7183B datasheet(49/100 Pages) AD

49 / 100 page

ADV7183B

Rev. B | Page 49 of 100

CGMS Data Registers

CGMS1[7:0], Address 0x96[7:0],

CGMS2[7:0], Address 0x97[7:0],

CGMS3[7:0], Address 0x98[7:0]

223H

Figure 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]

224H

Figure 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

225H

GDECAD Gemstar Decode Ancillary Data Format,

Address 0x4C[0] section.

CGMS2[7:0]

CGMS3[3:0]

CGMS1[7:0]

REF

+100 IRE

+70 IRE

0 IRE

–40 IRE

11.2

μs

49.1ms ± 0.5

μs

CRC SEQUENCE

2.235

μs ± 20ns

Figure 33. CGMS Data Extraction

Table 60. CGMS Access Information

Signal Name

Address

CGMS1[7:0]

CGMS 1[7:0]

150d

0x96

Readback only

CGMS2[7:0]

CGMS 2[7:0]

151d

0x97

Readback only

CGMS3[3:0]

CGMS 3[3:0]

152d

0x98

Readback only

REFERENCE COLOR BURST

(9 CYCLES)

FREQUENCY = FSC = 3.579545MHz

AMPLITUDE = 40 IRE

CCAP1[7:0]

7 CYCLES

OF 0.5035MHz

(CLOCK RUN-IN)

CCAP2[7:0]

2 3 4 5 6 7 0 1 2 3 4 5 67

BYTE 1

BYTE 0

33.764

μs

10.003

μs

10.5 ± 0.25

μs

12.91

μs

27.382

μs

50 IRE

40 IRE

Figure 34. Closed Caption Data Extraction

Table 61. CCAP Access Information

Signal Name

Address

CCAP1[7:0]

153d

0x99

Readback only

CCAP2[7:0]

154d

0x9A

Readback only

ADV7183B bảng dữ liệu(PDF) 49 Page - Analog Devices

ADV7183B bảng dữ liệu(HTML) 49 Page - Analog Devices

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100

bảng dữ liệu tải về

Link URL