mc44724 Freescale Semiconductor, Inc, mc44724 Datasheet - Page 35

• Manufacturer Part Number: mc44724
• Description: Digital Video Encoder
• Manufacturer: Freescale Semiconductor, Inc

sub-address 83 & 84 and 85 & 86 (previous frame data)
are double-buffered by Flame sync falling edge
Fsync
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
0IRE
Second byte to Encode
Second byte to Encode
First byte to Encode
First byte to Encode
10.50Å }0.5É
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.
Field 1
MSB
MSB
MSB
MSB
parity
parity
parity
ccp118
ccp128
ccp218
parity
ccp228
12.91É
Fig 21 : Closed caption data update timing
Fig 20 : Closed caption wave form
ccb117
ccb127
ccb217
ccb227
b7
b7
b7
b7
default 1000_0000
4.15Å }0.1É
ccb116
ccb126
ccb216
ccb226
No.
b6
b6
b6
b6
35
CHARACTER1
b
1
ccb115
ccb125
b
2
ccb215
ccb225
b5
b5
b5
b
3
b5
b
4
b
5
b
6
33.764É
Field 2
ccb224
b
7
ccb114
ccb124
ccb214
p
a
r
i
t
y
b4
b4
b4
CHARACTER2
b4
b
1
b
2
b
3
b
4
ccb113
ccb123
ccb213
ccb223
b
5
b3
b3
b3
b3
b
6
b
7
p
a
r
i
t
y
ccb112
ccb122
ccb212
ccb222
MC44724/5 Rev 0.21 03/25/97
b2
b2
b2
b2
ccb111
ccb121
ccb211
ccb221
b1
b1
b1
b1
LSB
LSB
LSB
LSB
50IRE
0IRE