Datasheet

TVP5158, TVP5157, TVP5156
www.ti.com SLES243G –JULY 2009–REVISED APRIL 2013
Table 4-50. F-Bit and V-Bit Decode Control
Subaddress 88h
Default 03h
7 6 5 4 3 2 1 0
Reserved VPLL Adaptive Reserved F-Mode [1:0]
VPLL
VPLL time constant control
0 VPLL adapts time constants to input signal
1 VPLL time constants fixed
Adaptive
0 Enable F and V bit adaptation to detected lines per frame
1 Disable F and V bit adaptation to detected lines per frame
F-Mode [1:0]
F-bit control mode
Auto: If lines per frame is standard decode F and V bits as per 656 standard from line count else decode F bit from
00
VSYNC input and set V bit = 0
01 Decode F and V from input syncs
10 Reserved
11 Always decode F and V bits from line count (TVP5146 compatible)
This register is used in conjunction with register 89h as shown:
Reg 88h Reg 89h Standard LPF Non-standard 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 TVP5158 656 656 Toggle Switch9
0 0 1 0 TVP5158 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 F bit transition, then low after 9 lines
Reserved Not used
Copyright © 2009–2013, Texas Instruments Incorporated Internal Control Registers 65
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Product Folder Links: TVP5158 TVP5157 TVP5156