W90221X Winbond Electronics Corp America, W90221X Datasheet - Page 63

• Manufacturer Part Number: W90221X
• Description: Pa-risc Embedded Controller
• Manufacturer: Winbond Electronics Corp America

6.2
Video accelerator (VA) consists of video pre-engine (VPRE) and post-engine (VPOST). The
VPRE handles the functions relating to video inputs from, for example MPEG chips or camera.
The VPOST handles the functions relating to pictures displayed to TV (interlace) or monitor
(non-interlace). There are totally thirty-three registers used to set up all the functions of VA.
Among them, twenty-eight registers are in VPOST with I/O space ranging from 0xf0000100 to
0xf000019c, while the remaining five registers are in VPRE with I/O space ranging from
0xf00001c0 to 0xf00001dc.
6.2.1
The following table lists the twenty-eight registers that are included in the VPOST. The
symbol BA found in the table stands for I/O base address 0xf0000000.
W90221X version 0.6
Port Address
BA + 0x100
BA + 0x104
BA + 0x108
BA + 0x10c
BA + 0x110
BA + 0x114
BA + 0x118
BA + 0x120
BA + 0x124
BA + 0x128
BA + 0x130
BA + 0x134
BA + 0x138
BA + 0x13c
BA + 0x140
BA + 0x144
BA + 0x148
BA + 0x14c
BA + 0x150
BA + 0x154
BA + 0x158
BA + 0x15c
BA + 0x160
BA + 0x164
BA + 0x168
BA+ 0x11c
BA + 0x12c
Video accelerator Registers
VPOST Registers
GFXVASFF
GFXSCKM
LUTINDEX
HSYNCSE
HWCSWX
GFXVASS
LUTDATA
VAYCADJ
OPWFSR
HWCSHY
HWCSSA
GFXSCK
GFXSSA
HWCSS
Symbol
WKSEX
WKSEY
HTDEE
VASSA
VTDEE
FF12T
FF34T
SCFIP
OVLC
VASC
VRSE
VPC
SCF
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
VPOST control register
Background stream fetch stop/restart for opaque
Window key start/end X register
Window key start/end Y register
Hardware cursor start/width X register
Hardware cursor start/height Y register
Graphics stream color key mask register
Graphics stream color key register
Overlay control register
Graphics stream start address register
VA stream start address register
Hardware cursor stream start address register
Graphics/VA stream stride register
Hardware cursor stream stride register
Graphics/VA stream fetch finish register
VA scaling control register
Look-up-table index register
Look-up-table data register
FIFO 1/2 threshold register
FIFO 3/4 threshold register
VA brightness/contrast/hue/saturation adjustment
Subcarrier frequency register
Subcarrier frequency initial phase register
Horizontal total/display enable end register
HSYNC start/end register
Vertical total/display enable end register
Vertical retrace start/end register
Description
- 63 -