hmp8117 Intersil Corporation, hmp8117 Datasheet - Page 29

• Manufacturer Part Number: hmp8117
• Description: Ntsc/pal Video Decoder
• Manufacturer: Intersil Corporation

NO.
NO.
BIT
BIT
7-4
7
6
5
4
3
2
1
0
3
2
1
0
Genlock Loss
Interrupt Status
Input Signal Loss
Interrupt Status
Closed Caption
Interrupt Status
WSS Interrupt
Status
Teletext Interrupt
Status
MV Interrupt Status
Auto Detect
Video Standard
Interrupt Status
Vertical Sync
Interrupt Status
Reserved
RAW Preamble
Enable
RAW VBI
All
RAW VBI
Even Field
RAW VBI
Odd Field
FUNCTION
FUNCTION
29
If set to “1”, this bit indicates the interrupt request was due to a loss of genlock.
To clear the interrupt request, a “1” must be written to this bit.
If set to “1”, this bit indicates the interrupt request was due to a loss of input video signal.
To clear the interrupt request, a “1” must be written to this bit.
If set to “1”, this bit indicates the interrupt request was due to new data in the closed caption data
registers. To clear the interrupt request, a “1” must be written to this bit.
If set to “1”, this bit indicates the interrupt request was due to new data available in the WSS data
registers. To clear the interrupt request, a “1” must be written to this bit.
If set to “1”, this bit indicates the interrupt request was due to the detection of teletext data in the
current field. To clear the interrupt request, a “1” must be written to this bit.
If set to “1”, this bit indicates the interrupt request was due to a change in the MV Detection Status
of register 0E
If set to “1”, this bit indicates the interrupt request was due to the successful auto detection of a
video standard. To clear the interrupt request, a “1” must be written to this bit.
If set to “1”, this bit indicates the interrupt request was due to the start of a new field.
To clear the interrupt request, a “1” must be written to this bit.
If set to “1”, enables a four byte preamble in the RAW VBI data stream.
The preamble format is FF
CNT1:
Bit 7 = even parity bar,
Bit 6 = even parity[5-0],
Bit 5 = 0,
Bit 4 = Field (0=Odd, 1=Even),
Bits 3 -0 =Linecount[8-4].
CNT2:
Bit 7 = even parity bar,
Bit 6 = even parity [5-0],
Bits 5-4 = 00
Bits 3-0 = Linecount[3-0].
If set to “1”, all the video lines (full field) are converted to RAW VBI data.
If set to “0”, only the lines enabled by the RAW VBI LINE MASK registers are converted to RAW
VBI data.
If set to “1”, even field lines are converted to RAW VBI data as specified by the RAW VBI All bit
and the RAW VBI LINE MASK registers.
If set to “0”, the even field lines are excluded from the RAW VBI data stream.
If set to “1”, odd field lines are converted to RAW VBI data as specified by the RAW VBI All bit
and the RAW VBI LINE MASK registers.
If set to “0”, the odd field lines are excluded from the RAW VBI data stream.
TABLE 24. INTERRUPT STATUS REGISTER
H
TABLE 25. RAW VBI CONTROL REGISTER
. To clear the interrupt request, a “1” must be written to this bit.
SUB ADDRESS = 10
SUB ADDRESS = 11
H
, CNT1, CNT2 and 00H, where:
HMP8117
DESCRIPTION
DESCRIPTION
H
H
April 19, 2007
RESET
RESET
STATE
STATE
0000
0
0
0
0
0
0
0
0
0
0
0
0
FN4643.3
B
B
B
B
B
B
B
B
B
B
B
B
B