
Philips Semiconductors
PNX15xx Series
Volume 1 of 1
Chapter 11: QVCP
PNX15XX_SER_3
Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 3 — 17 March 2006
11-63
25:16
HSRU_ddd_phase
R/W
0
Signed. This delta-delta-delta phase is added with delta-delta phase
to make it change. This is used for non-linear scaling ratios.For the
HSRU to work in bypass mode this register has to be programmed
to 0.
15:12
Unused
-
11:0
HSRU_dd_phase
R/W
0
Signed. This is the initial delta-delta phase. It is added with delta
phase to make it change. This is used for non-linear scaling ratios.
For the HSRU to work in bypass mode this register has to be
programmed to 0.
Note: Layer Size(nal) register has to be modied if HSRU scale
ratio is changed.
Offset 0x10 E2B4
Layer Size (nal)
31:12
Unused
-
11:0
LayerNWidth
R/W
0
nal (after scaling) Layer N width, in pixels.
Note: This register has to be programmed to match the nal width
after scaling, as given by the equation below.
Final width = (input width)*scaling ratio
LINT and HSRU can only crop at most 5 pixels off a scaled image.
Setting this register to a width which is more than 5 pixels smaller
than the scaled width can result in data underow.
On the other hand, if the nal width is greater than the scaled
image, the last pixel will be repeated to ll the nal width.
Always remember to update this register if LINT or HSRU scale
values are changed.
Offset 0x10 E2B8
Output and Alpha manipulation
31:24
Unused
-
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.
Table 20: QVCP 1 Registers …Continued
Bit
Symbol
Acces
s
Value
Description