HMP8117_07 Datasheet, PDF (29/45 Pages) Intersil Corporation – NTSC/PAL Video Decoder

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