pnx1500 NXP Semiconductors, pnx1500 Datasheet - Page 627

• Manufacturer Part Number: pnx1500
• Description: Pnx15xx Series Connected Media Processor
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Volume 1 of 1
PNX15XX_SER_3
Product data sheet
3.1.4 Solid Fill Setup
3.1.5 Color BLT Setup
Table 2: Mono Bitmap & Text Data Parameters
When the BltCtl.SRC register is set for font rendering (3), the Engine automatically
accommodates the predefined padding and alignment requirements for fonts. This
means that the host data will be tightly packed with no padding between scanlines or
before the very first pixel. After the first font glyph has been sent from the host, only
two registers will need to be re-loaded to initiate the next text BLT: DstXY/DstLinear
and BltSize.
Solid fill is a common graphics operation. To achieve low programming overhead, the
drawing engine only uses five parameters to set up a solid color fill.
Table 3: Solid Color Fill Parameters
The Engine uses up to 10 parameters to set up a color BLT.
Table 4: Color BLT Parameters
Parameter
CCColor
BltCtl
BltSize
Parameter
DstXY or DstLinear
DstStride
MonoPatFColor
BltCtl
BltSize
Parameters
DstXY or
DstLinear
SrcXY or
SrcLinear
SrcStride
DstStride
MonoPatFColor
MonoPatBColor
CCColor
Description
Specifies the drawing destination on the screen.
Specifies the location of source data for screen-to-screen BLTs. Specifies
start of line alignment for host-to-screen operations.
Specifies the number of pixels between scanlines in the source for screen-
to-screen BLTs. Unused for host-to-screen BLTs.
Specifies the number of pixels between scanlines in the destination.
Specifies the drawing color for solid fill BLTs using block write. Also may be
used to load the PatRam quickly.
The background color register may be used to help load the PatRam
quickly.
The Color Compare Color may be loaded if transparency is enabled in the
BltCtl register.
Rev. 3 — 17 March 2006
Description
Color compare color for transparency
Drawing function
Destination width and height
Description
Specifies the drawing destination on the screen
Specifies the number of pixels between scanlines in the
destination
Specifies the drawing color.
This register indicates that a solid fill operation is desired
by setting the SRC field to 5, CC field to 0. The ROP field
is a don’t care.
Specifies destination width and height, initiates drawing
function.
…Continued
Chapter 20: 2D Drawing Engine
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
PNX15xx Series
20-11