PNX1700EH,557 NXP Semiconductors, PNX1700EH,557 Datasheet - Page 628
PNX1700EH,557
Manufacturer Part Number
PNX1700EH,557
Description
Manufacturer
NXP Semiconductors
Datasheet
1.PNX1700EH557.pdf
(832 pages)
Specifications of PNX1700EH,557
Operating Temperature (min)
0C
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Lead Free Status / RoHS Status
Not Compliant
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Philips Semiconductors
Volume 1 of 1
PNX17XX_SER_1
Preliminary data sheet
// fetch a source pixel into Src
if (BltCtl.SRC == 0)
// fetch src pixel from system memory
....
else if (BltCtl.SRC == 1)
// src data is color from CPU
Src= HostData[31:0]
else if (BltCtl.SRC == 4)
begin
// fetch 4 bits of alpha from host, expand to 8 bits
Src.alpha = (HostData[3:0] << 4) | HostData[3:0] ;
Src.red = HAlphaColor.red
Src.green = HAlphaColor.green
Src.blue = HAlphaColor.blue
end
else if (BltCtl.SRC == 5)
begin
// fetch 8 bits of alpha from host
Src.alpha = HostData[7:0] ;
Src.red = HAlphaColor.red
Src.green = HAlphaColor.green
Src.blue = HAlphaColor.blue
end
else if (BltCtl.Src == 6)
// set src to 1 if no src data.
begin
Src.red = HAlphaColor.red
Src.green = HAlphaColor.green
Src.blue = HAlphaColor.blue
Src.alpha = HAlphaColor.alpha
End
// copy mono foreground info into the SurfAlpha
SurfAlpha = MonoHostFColor
// handle src bitmaps without alpha values
if (BltCtl.A[1:0] == 3 || (PixelSize==16 && PFormat == 0) )
Src.alpha = 1;
// handle non-premultiplied source pixels
if (BltCtl.A[1:0] == 1)
begin
Src.red *= Src.alpha ;
Src.green *= Src.alpha ;
Src.blue *= Src.alpha ;
end
// scale the src with the surface alpha values
Src.red *= SurfAlpha.red;
Src.green *= SurfAlpha.green;
Src.blue *= SurfAlpha.blue;
Src.alpha *= SurfAlpha.alpha
Rev. 1 — 17 March 2006
Chapter 20: 2D Drawing Engine
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
PNX17xx Series
20-8
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