pnx1700 NXP Semiconductors, pnx1700 Datasheet - Page 605

• Manufacturer Part Number: pnx1700
• Description: Connected Media Processor
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Volume 1 of 1
Table 8: Memory Based Scaler (MBS) Registers
PNX17XX_SER_1
Preliminary data sheet
Bit
19: 0
Offset 0x10 C204
31
30:28
27:26
25
24:16
15:13
12: 0
Offset 0x10 C208
31:26
25: 0
Offset 0x10 C20C
31:29
28: 0
Color Space Matrix Registers
Offset 0x10 C220
31:30
29:20
19:10
9:0
Symbol
HSP_ZOOM_0[19:0]
Reserved
HSP_QSHIFT[2:0]
Reserved
HSP_QSIGN
HSP_QMULTIPLY[8:0]
Reserved
HSP_OFFSET_0
Reserved
HSP_DZOOM_0[25:0]
Reserved
HSP_DDZOOM[28:0]
Unused
CSM_C02[9:0]
CSM_C01[9:0]
CSM_C00[9:0]
Phase Control
Initial Zoom delta
Zoom delta change
Color space matrix coefficients C
Acces
s
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
0
-
0
-
0
0
-
0
0
-
0
-
0
0
0
Value
Rev. 1 — 17 March 2006
…Continued
Description
Initial zoom for 1st pixel in line (unsigned, LSB = 2
Quantization shift control
Used to change quantization before being multiplied with
HSP_MULTIPLY.
Warning: A value range overflow caused by an improper
quantization shift can not be compensated later by multiplying with a
HSP_MULTIPLY value below 0.5!
Quantization sign bit
Quantization multiply control
Used to compensate for different weight sums in transposed
polyphase or color space matrix mode, remaining bits are fractions
(largest number is 511/512)
Value range:
gain more precision in the truncated result.
Initial start offset for DTO
Initial zoom delta for 1 pixel in line (signed, LSB = 2
Used for non constant scaling ratios.
Zoom delta change (signed, LSB = 2
used for non constant scaling ratios
Coefficient C02, two’s complement
Coefficient C01, two’s complement
Coefficient C00, two’s complement
m 0.5
2 0000 (hex): downscale 50%
1 0000 (hex): no scaling = 100%
0 8000 (hex): zoom 2 x (transposed: downscale 50%)
100 (bin): divide by 16
101 (bin): divide by 8
110 (bin): divide by 4
111 (bin): divide by 2
000 (bin): multiply by 1
001 (bin): multiply by 2
010 (bin): multiply by 4
011 (bin): multiply by 8
00
the quantization shift HSP_QSHIFT should be modified to
- C
02
0 m 1.0
. Instead of using values in the range of
Chapter 19: Memory Based Scaler
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
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PNX17xx Series
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