VT8601 Via, VT8601 Datasheet - Page 89

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

SRAF-AE – Capture Row Byte Offset ............................ RW
SRB1-B0 – Window 1 HSB Control ................................ RW
Hue range is 0-360 degrees (default = 0)
Saturation range is 0-1.875 (default = 1)
SRB3-B2 – Window 2 HSB Control ................................ RW
Hue range is 0-360 degrees (default = 0)
Saturation range is 0-1.875 (default = 1)
SRB6-B4 – Second Display Address Select ..................... RW
SRB7 – Video Sharpness ................................................... RW
SRBA-B8 – Second Capture Address Select ................... RW
SRBC – Contrast Control ................................................. RW
Revision 1.3 September 8, 1999
15-10 Brightness
15-10 Brightness
23-20 Reserved
23-20 Reserved
13-0 Capture Row Byte
19-0 Second Display Address for Double Buffering
19-0 Second Capture Address for Double Buffering
9-5
4-0
9-5
4-0
7-0
7-4
3-0
15
14
7HFKQRORJLHV ,QF
Reserved
Capture Address Initial Control
Sin(Hue) * Saturation * 8 (bit-9 is the sign bit)
Cos(Hue) * Saturation * 8 (bit-4 is the sign bit)
Sin(Hue) * Saturation * 8 (bit-9 is the sign bit)
Cos(Hue) * Saturation * 8 (bit-4 is the sign bit)
Second display address for double buffering instead
of capture address
Video Sharpness Factor
Second capture address for double buffering instead
of display address
Window 2 Contrast
Window 1 Contrast
:H &
:H &R R QQHFW
QQHFW
........................................ always reads 0
........................................ always reads 0
........................................ always reads 0
-83
SRBD – Dual View Mux Control .................................... RW
SRBE – Miscellaneous Control Bits ................................ RW
SRCE – Window 2 Live Video Control .......................... RW
7-3
2-0
6-5
4-3
2-0
7
4
3
2
1
0
7
6
5
Reserved
CRT / TV View Multiplexing Control
Planar Capture
Capture Start Address W/R Control (CR98[19-
0])
Video Engine Power Saving Mode
Reserved
Interpolation Bypass
Window 2 HSCB Enable
Window 1 HSCB Enable
Reserved
W2 Vertical Interpolation
Planar Mode X (Horizontal) Y/UV Ratio
Planar Mode Y (Vertical) Y/UV Ratio
Window Mode .................................... default = 000b
For 1xx, only one h/w overlay window is supported
00x Color key 1 determines top window (1=W1)def
010 Video window 1 overlay
011 Video window 2 overlay
10x Window key defines window 1 on top
11x Window key defines window 2 on top
000 YUV422
001 Planar
01x YUV
100 MPEG2 YUV422
101 MPEG2 Planar
11x YUV422
0x W/R Y address....................................... default
10 W/R U address
11 W/R V address
00 2x (Yp420) ............................................ default
01 4x (Yp410)
1x 1x (Yp422)
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Off
On
On
On
Interpolation .......................................... default
Bypass
Bypass ................................................... default
Enable
Bypass ................................................... default
Enable
Disable................................................... default
Enable
2x
4x
Format
........................................ always reads 0
.................................................... default
.................................................... default
........................................ always reads 0
........................................ always reads 0
.................................................... default
VT8601 Apollo ProMedia
H-V (V-YUV) 2x(96+48)x64
Interpolation
FIFO H
VGA Extended Registers
H-V
H-V
H-V
H-V
2x(96+48)x64
2x(96+48)x64
(96+48) x 64
(96+48) x 64
Line Buffers
96 x 64