Product specifications

VT8601A Apollo PLE133
Revision 1.82 October 22, 2001 -102- VGA Extended Registers
Technologies, Inc.
Delivering Value
Delivering ValueDelivering Value
Delivering Value
CRA1-A0 – Capture Vertical Total..................................RW
15-11 Reserved .........................................always reads 0
10-0 Capture Vertical Total
CRA3-A2 – Capture Horizontal Total.............................RW
15-9 Reserved .........................................always reads 0
8-0 Capture Horizontal Total
CRA5-A4 – Capture Vertical Start..................................RW
15-11 Reserved .........................................always reads 0
10-0 Capture Vertical Start
CRA7-A6 – Capture Vertical End....................................RW
15-11 Reserved .........................................always reads 0
10-0 Capture Vertical End
CRA9-A8 – Capture Horizontal Start..............................RW
15-10 Reserved .........................................always reads 0
9-0 Capture Horizontal Start
CRAB-AA – Capture Horizontal End .............................RW
15-10 Reserved .........................................always reads 0
9-0 Capture Horizontal End
CRAC – Capture Vertical Sync Pulse Width..................RW
7-4 Reserved .........................................always reads 0
3-0 Capture Vertical Sync Pulse Width
CRAD – Capture Horizontal Sync Pulse Width .............RW
7-6 Reserved .........................................always reads 0
5-0 Capture Horizontal Sync Pulse Width
CRAE – Capture CRTC Control .....................................RW
7 Time Base
0 One Time Base .......................................default
1 Two Time Base
6 Frame Reset
0 Field reset................................................default
1 Frame reset
5 Capture Clock Divide by 2
0 Select original capture clock...................default
1 Select inverted capture clock before divide by
two
4 Odd / Even Field Invert
0 Normal ....................................................default
1 Invert
3 CRTC Hsync Load
0 Enable .....................................................default
1 Disable
2 CRTC Vsync Load
0 Enable .....................................................default
1 Disable
1 CRTC Horizontal Reset
0 Enable .....................................................default
1 Disable
0 CRTC Vertical Reset
0 Enable .....................................................default
1 Disable
CRAF – Capture CRTC Control......................................RW
7 Video Exist Select
0 Video exist capture .................................default
1 Always capture
6 Capture Sync and Direct
0 Input ......................................................default
1 Output
5 Reserved .........................................always reads 0
4 Capture CRTC Input Clock Mode
0 Normal ....................................................default
1 Clock divided by 2 when in 8-bit pixel bus
mode
3 External CRTC Input Clock Mode
0 Clock devided by 1 .................................default
1 Clock devided by 2
2 External Pixel Clock Mode
0 Clock devided by 1 .................................default
1 Clock devided by 2
1 CRTC Mode
0 Targa Mode.............................................default
1 XPCV Mode
0 MPEG2 Vsync Select
0 Original Vsync........................................default
1 Field ID