
Functional Description
28
SLES141B—August 2007
TVP5146M2PFP
The following register writes must be made before normal operation of the device.
STEP
I2C SUBADDRESS
I2C DATA
1
0x03
0x01
2
0x03
0x00
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)
2.10 Internal Control Registers
The TVP5146M2 decoder is initialized and controlled by a set of internal registers that define the operating
parameters of the entire decoder. Communication between the external controller and the TVP5146M2
decoder is through a standard I2C host port interface, as described earlier. Table 210 shows the summary
of these registers. Detailed programming information for each register is described in the following sections.
Additional registers are accessible through an indirect procedure involving access to an internal 24-bit address
wide VBUS. Table 211 shows the summary of the VBUS registers.
NOTE: Do not write to reserved registers. Reserved bits in any defined register must be written
with 0s, unless otherwise noted.
Table 210. Register Summary
REGISTER NAME
I2C SUBADDRESS
DEFAULT
R/W
Input select
00h
R/W
AFE gain control
01h
0Fh
R/W
Video standard
02h
00h
R/W
Operation mode
03h
00h
R/W
Autoswitch mask
04h
23h
R/W
Color killer
05h
10h
R/W
Luminance processing control 1
06h
00h
R/W
Luminance processing control 2
07h
00h
R/W
Luminance processing control 3
08h
02h
R/W
Luminance brightness
09h
80h
R/W
Luminance contrast
0Ah
80h
R/W
Chrominance saturation
0Bh
80h
R/W
Chroma hue
0Ch
00h
R/W
Chrominance processing control 1
0Dh
00h
R/W
Chrominance processing control 2
0Eh
R/W
Reserved
0Fh
Component Pr saturation
10h
80h
R/W
NOTE: R = Read only
W = Write only
R/W = Read and write
Reserved register addresses must not be written to.