PNX1502E/G,557 NXP Semiconductors, PNX1502E/G,557 Datasheet - Page 374
PNX1502E/G,557
Manufacturer Part Number
PNX1502E/G,557
Description
IC MEDIA PROC 300MHZ 456-BGA
Manufacturer
NXP Semiconductors
Specifications of PNX1502E/G,557
Applications
Multimedia
Core Processor
TriMedia
Controller Series
Nexperia
Interface
I²C, 2-Wire Serial
Number Of I /o
61
Voltage - Supply
1.23 V ~ 1.37 V
Operating Temperature
0°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
456-BGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Program Memory Type
-
Ram Size
-
Lead Free Status / Rohs Status
Compliant
Other names
568-1298
935277748557
PNX1502E/G
935277748557
PNX1502E/G
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Philips Semiconductors
Volume 1 of 1
PNX15XX_SER_3
Product data sheet
2.7.5 Output Interface Modes
The main purpose of gamma correction is to adapt the gamma prescribed by the
transmission standard to a particular display device. Gamma may also be adapted to
ambient light conditions (a lower gamma for a brighter environment). Gamma
correction should be done on RGB signals going to the display, but never on a YUV
signal.
The gamma correction in QVCP is based on linear interpolation.The input signal is
divided into 64 segments of 16 values each. For each component, there are 2
independent look-up tables, one for the base and the other for the slope. For a strong
correction, there is an optional squarer after the linear interpolator, which is
recommended to be switched on when the gamma value is larger than about 1.4. The
output of the gamma corrector is a 14b unsigned value.
QVCP supports four output data formats: 6 bits, 8 bits, 9+1 bits, and 10 bits. They are
generated by the dither unit. The dither unit uses an error-propagation algorithm,
which minimize the average error caused by losing bits.
The supported output interface modes are described below. Note that
System On Chip Resources
PNX15xx Series pins.
30-, 24- or 18-Bit Parallel Mode
All video data pins are used to transport the digital video data stream without any
component multiplexing. The output data format can be either YUV or RGB and 10-,
8-, or 6-bit (as determined by the noise shaping) per color component.
30-bit Mode:
QVCP_DATA[29:20]: Y[9:0] or R[9:0]
QVCP_DATA[19:10]: U[9:0] or G[9:0]
QVCP_DATA[9:0]: V[9:0] or B[9:0]
24-bit Mode:
QVCP_DATA[29:22]: Y[7:0] or R[7:0]
QVCP_DATA[19:12]: U[7:0] or G[7:0]
QVCP_DATA[9:2]: V[7:0] or B[7:0]
18-bit Mode:
QVCP_DATA[29:24]: Y[5:0] or R[5:0]
QVCP_DATA[19:14]: U[5:0] or G[5:0]
QVCP_DATA[9:4]: V[5:0] or B[5:0]
D1 Mode
10-bit Mode:
Rev. 3 — 17 March 2006
presents how the QVCP module pins are mapped to the
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
PNX15xx Series
Chapter 11: QVCP
Chapter 3
11-21
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