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9.2.47 Interrupt Active Register B
9.2.48 Status Register #1
9.2.49 Status Register #2
TVP5154
4-CHANNEL LOW-POWER PAL/NTSC/SECAM VIDEO DECODER
WITH INDEPENDENT SCALERS AND FAST LOCK
SLES163A – MARCH 2006 – REVISED JULY 2006
Address 87h
7 6 5 4 3 2 1 0
Reserved Interrupt B
Interrupt B:
0 = Interrupt B is not active on the external terminal (default).
1 = Interrupt B is active on the external terminal.
The interrupt active register B is polled by the external processor to determine if interrupt B is active.
Address 88h
7 6 5 4 3 2 1 0
Peak white Line-alternating Field rate Lost lock Color subcarrier Vertical sync Horizontal sync TV/VCR
detect status status status detect lock status lock status lock status status
Peak white detect status:
0 = Peak white is not detected.
1 = Peak white is detected.
Line–alternating status:
0 = Nonline alternating
1 = Line alternating
Field rate status:
0 = 60 Hz
1 = 50 Hz
Lost lock detect:
0 = No lost lock since status register #1 was last read
1 = Lost lock since status register #1 was last read
Color subcarrier lock status:
0 = Color subcarrier is not locked.
1 = Color subcarrier is locked.
Vertical sync lock status:
0 = Vertical sync is not locked.
1 = Vertical sync is locked.
Horizontal sync lock status:
0 = Horizontal sync is not locked.
1 = Horizontal sync is locked.
TV/VCR status. TV mode is determined by detecting standard line-to-line variations and specific chroma SCH phases based on the
standard input video format. VCR mode is determined by detecting variations in the chroma SCH phases compared to the chroma SCH
phases of the standard input video format.
0 = TV
1 = VCR
Address 89h
7 6 5 4 3 2 1 0
Reserved Weak signal detection PAL switch polarity Field sequence status AGC and offset frozen status Reserved
Weak signal detection:
0 = No weak signal
1 = Weak signal mode
PAL switch polarity of first line of odd field:
0 = PAL switch is 0.
1 = PAL switch is 1.
Field sequence status:
0 = Even field
1 = Odd field
AGC and offset frozen status:
0 = AGC and offset are not frozen.
1 = AGC and offset are frozen.
Internal Control Registers46 Submit Documentation Feedback