mc44723a Freescale Semiconductor, Inc, mc44723a Datasheet - Page 36

• Manufacturer Part Number: mc44723a
• Description: Advanced Digital Video Encoder
• Manufacturer: Freescale Semiconductor, Inc

x x x x x x x x x x x x x x x x
x x x x x x x x x x x x x x
Sub-address 83~84 :closed caption characters/extended data for Field1(Line21) (write)
Sub-address 85~86 :closed cation character/extended data for Field2(Line284)
-40IRE
50IRE
Note : This Closed Caption wafeform is defined by when the register $72 [3] = "1" is set
sub-address 80, 81, 82, 83, 84, 85 and 86 (previous frame data)
are double-buffered by Frame sync falling edge
0IRE
Fsync
Second byte to Encode
Second byte to Encode
First byte to Encode
First byte to Encode
10.50 S
Register 83
Register 84
Register 85
Register 86
This document contains information on a new product. Specifications and information herein are subject to change without notice.
MSB
MSB
MSB
MSB
parity
parity
parity
ccp128
ccp218
parity
ccp118
ccp228
Field 1
12.91 S
Fig 22 : Closed caption wave form
Fig 23 : VBI data update timing
ccb117
ccb217
ccb227
ccb127
b7
b7
b7
b7
4.15 S
ccb116
ccb216
ccb126
ccb226
No.
b6
b6
b6
b6
36
CHARACTER1
b
1
b
2
ccb115
ccb125
ccb215
ccb225
b5
b5
b5
b
3
b5
b
4
b
5
b
6
33.764 S
b
7
ccb224
ccb214
ccb114
ccb124
p
a
r
i
t
y
b4
b4
b4
CHARACTER2
b4
b
1
b
2
Field 2
b
3
b
4
ccb113
ccb213
ccb123
ccb223
b
5
b3
b3
b3
b3
b
6
b
7
p
a
r
i
t
y
MC44722A/3A Rev 0.05 07/15/98
ccb212
ccb112
ccb122
ccb222
b2
b2
b2
b2
ccb211
ccb111
ccb121
ccb221
b1
b1
b1
b1
LSB
LSB
LSB
LSB
50IRE
0IRE