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NXP Semiconductors
PNX15xx/952x Series
Volume 1 of 1
Chapter 11: QVCP
PNX15XX_PNX952X_SER_N_4
NXP B.V. 2007. All rights reserved.
Product data sheet
Rev. 4.0 — 03 December 2007
11-416
23:16
LAYER_FIXED_ALPHA
R/W
0
Alpha blend value to be applied to mixer. Provides 256 levels of
xed alpha blending:
The AlphaSelect ROP must be set appropriately to use this feature.
15:14
PF_ALPHA_MODE
R/W
Control how Alpha channel data is generated
00: Fixed Alpha
01: Fixed Alpha
10: Per pixel alpha
11: Per pixel alpha is multiplied with (xed_alpha)/256
Mode 11 is not effective when PF_10B_MODE is on since the Alpha
value is set to zero.
13
Unused
12
PF_A2C
R/W
0
Controls alpha channel format within layer
0 = data untouched
1 = data conversion two’s compliment <-> binary offset
The conversion takes place after the color key unit before the
undither unit.
11
PF_U2C
R/W
0
Controls upper channel format within layer
0 = data untouched
1 = data conversion two’s compliment <-> binary offset
The conversion takes place after the color key unit before the
undither unit.
10
PF_M2C
R/W
0
Controls middle channel format within layer
0 = data untouched
1 = data conversion two’s compliment <-> binary offset
The conversion takes place after the color key unit before the
undither unit.
9
PF_L2C
R/W
0
Controls lower channel format within layer
0 = data untouched
1 = data conversion two’s compliment <-> binary offset
The conversion takes place after the color key unit before the
undither unit
8:6
Unused
-
5:3
PF_OFFSET2
R/W
0
Denes pixel offset (in bytes) within a multi-pixel 64-bit word for
channel 2 for semi-planar and planar modes.
0, 2 or 4 for 10-bit YUV 4:2:2 semi-planar format
0 to 7 for 8-bit YUV 4:2:2 semi-planar format
The number will be truncated to the closest even number for
channel 2
2:0
PF_OFFSET1
R/W
0
Denes pixel offset (in bytes) within a multi-pixel 64-bit word.
0, 2 or 4 for 10-bit YUV 4:2:2 semi-planar format
0 or 4 for 10-bit (20 bpp) packed YUV 4:2:2 format
0, 2, 4 or 6 for 8-bit (16 bpp) packed YUV 4:2:2 or 16-bit varible
format
0 or 4 for 32-bit varible format
0 to 7 for all the other formats
Table 20: QVCP 1 Registers …Continued
Bit
Symbol
Acces
s
Value
Description