Datasheet

TVP5158, TVP5157, TVP5156
www.ti.com SLES243G –JULY 2009–REVISED APRIL 2013
Table 4-45. Sync Height Low Threshold
Subaddress 7Ch
Default 02h
7 6 5 4 3 2 1 0
VSync upper thres [7:0]
Lower hysteresis threshold for vertical sync-height detection (value/32×target sync height).
Table 4-46. Sync Height High Threshold
Subaddress 7Dh
Default 08h
7 6 5 4 3 2 1 0
VSync upper thres [7:0]
Upper hysteresis threshold for vertical sync-height detection (value/32×target sync height).
Table 4-47. Clear Lost Lock Detect
Subaddress 81h
Default 00h
7 6 5 4 3 2 1 0
Clear lost lock
Reserved
detect
Clear lost lock detect
Clear bit 4 (lost lock detect) in the status 1 register at subaddress 00h
0 No effect (default)
1 Clears bit 4 in the status 1 register (00h)
Table 4-48. VSYNC Filter Shift
Subaddress 85h
Default 03h
7 6 5 4 3 2 1 0
Reserved VSYNC filter shift [1:0]
VSYNC filter shift [1:0]
Used for adaptation of VPLL time constant
00 0 (fast)
01 1
10 2
11 3 (slow)
Copyright © 2009–2013, Texas Instruments Incorporated Internal Control Registers 63
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