Product specifications
VT8601A Apollo PLE133
Revision 1.82 October 22, 2001 -103- VGA Extended Registers
Technologies, Inc.
Delivering Value
Delivering ValueDelivering Value
Delivering Value
CRB1-B0 – Capture Horizontal Minify Factor...............RW
15 Reserved .........................................always reads 0
14-10 Planar Capture FIFO Level (for both U and V)
9-0 Capture Horizontal Minify Factor
CRB3-B2 – Capture Vertical Minify Factor ...................RW
15 Reserved .........................................always reads 0
14-10 Planar Capture FIFO Threshold (for both U & V)
9-0 Capture Vertical Minify Factor
CRB5-B4 – DST Pixel Width Count ................................RW
15-12 Reserved .........................................always reads 0
11-0 DST Pixel Width Count
CRB7-B6 – DST Pixel Height Count................................RW
15-11 Reserved .........................................always reads 0
10-0 DST Pixel Height Count
CRB8 – Capture FIFO Control 1 .....................................RW
7-6 Capture FIFO Page Break
00 8 leveldefault
01 16 level
1x 32 level
5 Interlace Double Buffering
0 Disable ................................................... default
1 Enable
4-0 Capture FIFO Level Control
0 Targa Mode............................................ default
1 XPCV Mode
CRB9 – Capture FIFO Control 2 .....................................RW
7 ENNENZOOM
6 Planar 422 Display
0 Disable ................................................... default
1 Enable
5 Planar Mode Window Indicator
Indicate which window is in planar mode
4-0 Capture FIFO Request Threshold Control
0 Targa Mode............................................ default
1 XPCV Mode
CRBB-BA – Chromakey Comp Data 0 Low...................RW
15-0 Chromakey Compare Data 0 (Lower Threshold
CRBD-BC – Chromakey Comp Data 0 High..................RW
15-0 Chromakey Compare Data 0 (Higher Threshold
CRBE – Capture Control .................................................RW
7-6 Reserved ......................................... always reads 0
5 Video WBUF Status .............................................RO
0 Empty ......................................................default
1 Not empty
4 Second Aperture Direct Access (bypass video
capture)
3 Interpolation Control
2 Video Engine Clock Enable
0 Off ......................................................default
1 On
1 Flicker-Free Function
0 Disable ....................................................default
1 Flicker-free when input is in interlace mode
0 Reserved ......................................... always reads 0
CRBF – Display Engine Flags 4........................................RW
7 Video Line Buffer Read Reset Select...... default = 0
6-4 Window 2 Video Data Format
000 YUV 422.................................................default
001 -reserved-
010 RGB 16
011 -reserved-
1xx -reserved-
3 Interpolation Bypass 1 ............................ default = 0
2-0 Window 1 Video Data Format
000 YUV 422.................................................default
001 -reserved-
010 RGB 16
011 -reserved-
1xx -reserved-