HMP8156 Intersil Corporation, HMP8156 Datasheet - Page 19

• Manufacturer Part Number: HMP8156
• Description: Ntsc/pal Encoder
• Manufacturer: Intersil Corporation

NUMBER
NUMBER
NUMBER
NUMBER
BIT
BIT
BIT
BIT
2-0
7-0
7-0
7-0
7
6
5
4
3
Software Reset
Power Down
Enable
NTSC/PAL 2
Output Mode
Closed Caption
Line 21
Write Status
Closed Caption
Line 284
Write Status
Reserved
Line 21 Caption
Data
(First Byte)
Line 21 Caption
Data
(Second Byte)
Line 284 Caption
Data
(First Byte)
FUNCTION
FUNCTION
FUNCTION
FUNCTION
Setting this bit to “1” initiates a software reset. It is automatically reset to a “0” after the
reset sequence is complete.
0 = Normal operation
1 = Power down mode
0 = Enabled
1 = Disabled
0 = Caption_21A and Caption_21B data registers contain unused data
1 = Data has been output, host processor may now write to the registers
0 = Caption_284A and Caption_284B data registers contain unused data
1 = Data has been output, host processor may now write to the registers
This register is cascaded with the closed caption_21B data register and they are read
out serially as 16 bits during line 18, 21, or 22 if line 21 captioning is enabled. Bit D0 of
the 21A data register is shifted out first.
This register is cascaded with the closed caption_21A data register and they are read
out serially as 16 bits during line 18, 21, or 22 if line 21 captioning is enabled. Bit D0 of
the 21A data register is shifted out first.
This register is cascaded with the closed caption_284B data register and they are read
out serially as 16 bits during line 281, 284, or 335 if line 284 captioning is enabled. Bit
D0 of the 284A data register is shifted out first.
TABLE 20. CLOSED CAPTION_284A DATA REGISTER
TABLE 18. CLOSED CAPTION_21A DATA REGISTER
TABLE 19. CLOSED CAPTION_21B DATA REGISTER
TABLE 17. HOST CONTROL REGISTER
SUB ADDRESS = 0F
SUB ADDRESS = 10
SUB ADDRESS = 11
SUB ADDRESS = 12
HMP8156
19
DESCRIPTION
DESCRIPTION
DESCRIPTION
DESCRIPTION
H
H
H
H
RESET
RESET
RESET
RESET
STATE
STATE
STATE
STATE
000
80
80
80
0
0
0
1
1
B
B
B
B
B
H
H
H
B