Datasheet

TVP5147M1
www.ti.com SLES140G –JULY 2005–REVISED FEBRUARY 2012
Table 2-16. Operation Mode Control Register
Subaddress 03h
Default 00h
7 6 5 4 3 2 1 0
Reserved H-PLL response time Reserved Power save
H-PLL response time
00 = Adaptive mode (default).
01 = Reserved mode.
10 = Fast mode.
11 = Normal mode.
When in the Normal mode, the horizontal PLL (H-PLL) response time is set to its slowest setting. This mode improves noise immunity
and provides a more stable output line frequency for standard TV signal sources (for example, TV tuners, DVD players, video
surveillance cameras, etc.).
When in the Fast mode, the H-PLL response time is set to its fastest setting. This mode enables the H-PLL to respond more quickly to
large variations in the horizontal timing (for example, VCR head switching intervals). This mode is recommended for VCRs and also
cameras locked to the AC power-line frequency.
When in the Adaptive mode, the H-PLL response time is automatically adjusted based on the measured horizontal phase error. In this
mode, the H-PLL response time typically approaches its slowest setting for most standard TV signal sources and approaches its fastest
setting for most VCR signal sources.
Power save
0 = Normal operation (default)
1 = Power save mode. Reduces the clock speed of the internal processor and switches off the ADCs. I
2
C interface is active, and all
current operating settings are preserved.
Table 2-17. Autoswitch Mask Register
Subaddress 04h
Default 23h
7 6 5 4 3 2 1 0
Reserved PAL 60 SECAM NTSC 4.43 (Nc) PAL (M) PAL PAL (M, J) NTSC
This register limits the video formats between which autoswitch is possible.
PAL 60
0 = Autoswitch does not include PAL 60 (default)
1 = Autoswitch includes PAL 60
SECAM
0 = Autoswitch does not include SECAM
1 = Autoswitch includes SECAM (default)
NTSC 4.43
0 = Autoswitch does not include NTSC 4.43 (default)
1 = Autoswitch includes NTSC 4.43
(Nc) PAL
0 = Autoswitch does not include (Nc) PAL (default)
1 = Autoswitch includes (Nc) PAL
(M) PAL
0 = Autoswitch does not include (M) PAL (default)
1 = Autoswitch includes (M) PAL
PAL
0 = Reserved
1 = Autoswitch includes (B, D, G, H, I, N) PAL (default)
(M, J) NTSC
0 = Reserved
1 = Autoswitch includes (M, J) NTSC (default)
Note: Bits 1 and 0 must always be 11b.
Copyright © 2005–2012, Texas Instruments Incorporated Functional Description 43
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