Datasheet
TVP5147M1
SLES140G –JULY 2005–REVISED FEBRUARY 2012
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Table 2-68. F-Bit and V-Bit Decode Control 1 Register
Subaddress 69h
Default 00h
7 6 5 4 3 2 1 0
Reserved VPLL Adaptive Reserved F-bit Mode [1:0]
VPLL:
VPLL time constant control
0 = VPLL adapts the time constant to the input signal (default)
1 = VPLL time constants are fixed
Adaptive:
0 = Enable F-bit and V-bit adaptation to detected lines per frame (default)
1 = Disable F-bit and V-bit adaptation to detected lines per frame
F-bit mode:
00 = Auto mode. If lines per frame is standard decode F and V bits as per 656 standard from line count else decode F bit from vsync
input and set V bit = 0b (default)
01 = Decode F and V bits from input syncs
10 = Reserved
11 = Always decode F and V bits from line count
This register is used in conjunction with register 75h as indicated below:
REGISTER 69H REGISTER 75H STANDARD LPF NONSTANDARD LPF
MODE
BIT 1 BIT 0 BIT 3 BIT 2 F V F V
0 0 0 0 Reserved Reserved Reserved Reserved Reserved
0 0 0 1 TVP5160 656 656 Toggle Switch9
0 0 1 0 TVP5160 656 656 Pulse 0
0 0 1 1 Reserved Reserved Reserved Reserved Reserved
0 1 0 0 Reserved Reserved Reserved Reserved Reserved
0 1 0 1 656 656 Toggle Switch9
0 1 1 0 656 656 Pulse 0
0 1 1 1 Reserved Reserved Reserved Reserved Reserved
1 0 0 0 Reserved Reserved Reserved Reserved Reserved
1 0 0 1 Reserved Reserved Reserved Reserved Reserved
1 0 1 0 Reserved Reserved Reserved Reserved Reserved
1 0 1 1 Reserved Reserved Reserved Reserved Reserved
Even = 1
1 1 0 0 TVP5146 656 656 Switch
Odd = toggle
1 1 0 1 TVP5146 656 656 Toggle Switch
1 1 1 0 TVP5146 656 656 Pulse Switch
1 1 1 1 Reserved Reserved Reserved Reserved Reserved
656 = ITU-R BT.656 standard
Toggle = Toggles from field to field
Pulse = Pulses low for 1 line prior to field transition
Switch = V bit switches high before the F-bit transition and low after the F-bit transition
Switch9 = V bit switches high 1 line prior to the F-bit transition, then low after nine lines
Reserved = Not used
66 Functional Description Copyright © 2005–2012, Texas Instruments Incorporated
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