VT8601 Via, VT8601 Datasheet - Page 109

• Manufacturer Part Number: VT8601
• Description: Slot-1 / Socket-370 PCI North Bridge
• Manufacturer: Via

CRA1-A0 – Capture Vertical Total ................................. RW
CRA3-A2 – Capture Horizontal Total ............................ RW
CRA5-A4 – Capture Vertical Start ................................. RW
CRA7-A6 – Capture Vertical End ................................... RW
CRA9-A8 – Capture Horizontal Start ............................. RW
CRAB-AA – Capture Horizontal End ............................. RW
CRAC – Capture Vertical Sync Pulse Width ................. RW
CRAD – Capture Horizontal Sync Pulse Width ............. RW
Revision 1.3 September 8, 1999
15-11 Reserved
15-11 Reserved
15-11 Reserved
15-10 Reserved
15-10 Reserved
10-0 Capture Vertical Total
15-9 Reserved
10-0 Capture Vertical Start
10-0 Capture Vertical End
8-0
9-0
9-0
7-4
3-0
7-6
5-0
7HFKQRORJLHV ,QF
Capture Horizontal Total
Capture Horizontal Start
Capture Horizontal End
Reserved
Capture Vertical Sync Pulse Width
Reserved
Capture Horizontal Sync Pulse Width
:H &
:H &R R QQHFW
QQHFW
........................................ always reads 0
........................................ always reads 0
........................................ always reads 0
........................................ always reads 0
........................................ always reads 0
........................................ always reads 0
........................................ always reads 0
........................................ always reads 0
-103
CRAE – Capture CRTC Control .................................... RW
CRAF – Capture CRTC Control .................................... RW
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
Time Base
Frame Reset
Capture Clock Divide by 2
Odd / Even Field Invert
CRTC Hsync Load
CRTC Vsync Load
CRTC Horizontal Reset
CRTC Vertical Reset
Video Exist Select
Capture Sync and Direct
Reserved
Capture CRTC Input Clock Mode
External CRTC Input Clock Mode
External Pixel Clock Mode
CRTC Mode
MPEG2 Vsync Select
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
One Time Base ...................................... default
Two Time Base
Field reset .............................................. default
Frame reset
Select original capture clock.................. default
Select inverted capture clock before divide by
two
Normal................................................... default
Invert
Enable .................................................... default
Disable
Enable .................................................... default
Disable
Enable .................................................... default
Disable
Enable .................................................... default
Disable
Video exist capture ................................ default
Always capture
Input .................................................... default
Output
Normal................................................... default
Clock divided by 2 when in 8-bit pixel bus
mode
Clock devided by 1 ................................ default
Clock devided by 2
Clock devided by 1 ................................ default
Clock devided by 2
Targa Mode ........................................... default
XPCV Mode
Original Vsync....................................... default
Field ID
........................................always reads 0
VT8601 Apollo ProMedia
VGA Extended Registers