Datasheet

3 ms (min)
RESETB
(Terminal 34)
1 ms (min)
Invalid I
2
C Cycle Valid
Normal Operation
100 µs
SDA
(Terminal 29)
Power (1.8 V)
Power (3.3 V)
Reset
NOTE: All times shown are minimum values. Maximum time between 1.8 V and 3.3 V should be no longer than 1 second.
TVP5146M2
www.ti.com SLES141H –JULY 2005– REVISED FEBRUARY 2012
TI recommends the following power-up sequence.
Figure 2-20. Reset Timing
The following register writes must be made before normal operation of the device.
I
2
C I
2
C
STEP
SUBADDRESS DATA
1 0x03 0x01
2 0x03 0x00
When using the TVP5146M2I over the industrial (−40°C to 85°C) temperature range, the following register
writes are required following device power up and RESETB to write 0x14 to VBUS register 0xA00014.
This setup is optional when using the TVP5146M2 over the commercial (0°C to 70°C) temperature range.
I
2
C I
2
C
STEP
SUBADDRESS DATA
1 0xE8 0x14
2 0xE9 0x00
3 0xEA 0xA0
4 0xE0 0x14
2.9 Adjusting External Syncs
The proper sequence to program the following external syncs is:
• To set NTSC, PAL-M, NTSC 443, PAL60 (525-line modes):
– Set the video standard to NTSC (register 02h).
– Set HSYNC, VSYNC, VBLK, and AVID external syncs (registers 16h through 24h).
• To set PAL, PAL-N, SECAM (625-line modes):
– Set the video standard to PAL (register 02h).
– Set HSYNC, VSYNC, VBLK, and AVID external syncs (registers 16h through 24h).
• For autoswitch, set the video standard to autoswitch (register 02h).
Copyright © 2005–2012, Texas Instruments Incorporated Functional Description 37
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