VT1621M VIA, VT1621M Datasheet - Page 13

• Manufacturer Part Number: VT1621M
• Description: TV Encoder
• Manufacturer: VIA

Offset 02 – Scaling / Chroma Filter Control .................. RW
Offset 03 – Luma Filter Control...................................... RW
Offset 04 – Output Mode ................................................. RW
Revision 1.0 June 17, 2002
7-6
5-3
1-0
7-2
1-0
2
7
6
5
4
3
2
1
0
Reserved
Scaling Ratio
Reserved
Chroma Channel Deflicker Adjust
Reserved
Luma Channel Deflicker Adjust
Reserved
YCbCr to YUV Conversion
Reserved
PAL_N Mode
PAL_Nc Mode
Reserved
Output Line Selection
Output TV Standard
We Connect
We Connect
We Connect
We Connect
000 1/1
001 3/4
010 5/4
011 5/6
100 7/8
101 7/10
00 No Deflicker Filter ................................ default
01 1:1:1 Deflicker Filter
1x 1:2:1 Deflicker Filter
00 No Deflicker Filter ................................ default
01 1:1:1 Deflicker Filter
1x 1:2:1 Deflicker Filter
0
1
0
1
0
1
0 625
1 525
0 PAL
1 NTSC
Disable................................................... default
Enable
Disable................................................... default
Enable (bits 1-0 must be 00b)
Disable................................................... default
Enable (bits 1-0 must be 00b)
.................................................... default
.................................................... default
........................................ always reads 0
........................................ always reads 0
........................................ always reads 0
........................................ always reads 0
........................................ always reads 0
........................................ always reads 0
.................................................... default
- 8-
Offset 05 – Control 1......................................................... RW
Offset 06 – Control 2......................................................... RW
Offset 07 – Start Active Video ......................................... RW
Offset 08 –Start Horizontal Position ............................... RW
Offset 09 – Start Vertical Position................................... RW
1-0
6-5
3-0
7-0
7-0
7-0
7
6
5
4
3
2
7
4
Reserved
Master / Slave Clock Mode Select
Reserved
FSCI Auto Adjust
FSCI Auto Fine Tune
PCLK Clock Polarity
PCLK Output Mode
Color Bar
XCLK Input Clock Mode
Edge Used to Latch Input Data
Input Clock Adjust
Start Active Video Bits 7-0 ...................default = 00h
Sets the delay from the leading edge of horizontal
sync to start of active video. See Rx1C[3] for bit-8.
Start Horizontal Position Bits 7-0 .......default = 00h
Used to shift the displayed TV image in a horizontal
direction. See Rx1C[2] for bit-8.
Start Vertical Position Bits 7-0 ............default = 00h
Used to shift the displayed TV image in a vertical
direction. See Rx1C[1] for bit-8.
0000
1111
00 1X
01 2X
1x 3X
00 1X
01 2X
1x 3X
…
0
1
0
1
0
1
0
1
0
1
0
1
Master Clock Mode ...............................default
Slave Clock Mode
Disable ...................................................default
FSCI Auto Adjust Enable, use 14.31818 MHz
to calculate FSCI [31:0]
Disable ...................................................default
Enable
Disable ...................................................default
Enable
VT1621 / VT1621M TV Encoder
........................................always reads 0
........................................always reads 0
....................................................default
....................................................default
....................................................default
....................................................default
....................................................default
Register Descriptions