VT1621M VIA, VT1621M Datasheet - Page 16

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

Offset 1D – Test 0 .............................................................. RO
Offset 1E – Test 1.............................................................. RW
Revision 1.0 June 17, 2002
6-4
3-2
7
1
0
7
6
5
4
3
2
1
0
Software Reset: 0: Reset
Scaler and Deflicker Test
Encoder Test
(VSI, HSI, DSI, PDI[15:8], PDO[4:0])
Internal Register Parallel Testing (Read Mode)
(PDO[7:0])
Internal Register Parallel Testing (Write Mode)
(PDI[14:0])
Test TV Out
Turn On Input Clock Mode
CSYNC Output Enable
PD[15:12] Bus
PD[11:8] Bus
PD[7:4] Bus
PD[3:0] Bus
Test Input Pad
We Connect
We Connect
We Connect
We Connect
000 Normal................................................... default
001 BIST_EN:1:BIST Enable
01x -reserved-
1x1 Scale Test Mode 0
11x Scale Test Mode 1
00 Normal................................................... default
01 Chrominance test
10 Luminance test
11 Composite test
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
(VSI, HSI, PDI[15:12], PDI[11:0])
(VSI, HSI, PDI[15:12], PDO[11:0])
Disable................................................... default
Enable
Disable................................................... default
Enable
Output Mode.......................................... default
Input Mode ............................................ default
Output Mode
Input Mode ............................................ default
Output Mode
Input Mode ............................................ default
Output Mode
Input Mode ............................................ default
Output Mode
.................................................... default
.................................................... default
.................................................... default
- 11-
Offset 1F – Test 2 .............................................................. RW
7-6
5-4
3-2
1-0
Y DAC Control
C DAC Control
Composite DAC Control
Test I2C
00 Normal function .....................................default
01 DAC off
10 Test DAC
11 Invert test DAC
00 Normal function .....................................default
01 DAC off
10 Test DAC
11 Invert test DAC
00 Normal function .....................................default
01 DAC off
10 Test DAC
11 Invert test DAC
0
1
VT1621 / VT1621M TV Encoder
....................................................default
Register Descriptions