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PDF ( 数据手册 , 数据表 ) PM-36

零件编号 PM-36
描述 JPEG Image Processor
制造商 Zoran
LOGO Zoran LOGO 


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PM-36 数据手册, 描述, 功能
PM-36™ /80 MHz/110MHz
.comJPEG Image Processor
Imaging
Software
eet4UProduct Brief
Zoran Corporation
1390 Kifer Road
Sunnyvale, CA 94086-5305
www.zoran.com
Driving the Digital Lifestyle
Processors
SOC Solutions
ataShThe PM-36 is a fixed-function iCODEC device that delivers high
.Dspeed JPEG compression/decompression of color and grayscale
image data. An ISO standard for lossy image compression, JPEG
wcan reduce the size of image data without a noticeable
wdifference in image quality. This improves system performance of
wBenefits
m• High Performance JPEG Imaging CODEC—Delivers sustained
odata rates of up to 110 MB per second
.c• Efficient Coding—loadable Q-Tables and two loadable Huffman
table pairs
U• Highly Integrated—Internal Phase-Locked Loop (PLL)
t4• 3.3 Volt supply—5 Volt Tolerant I/O
e• Standard Compliant—ISO IS 10918-1/10918-2
.DataSheDescription
wHigh Throughput
wThe PM-36 can sustain data rates of 80 or 110 MB per second to
support real time operations. In addition, it implements two advanced
mfeatures that maximize throughput and system performance:
w .co• Programmable code rate control—This optional mode limits the
Uencoded output data bandwidth to a predefined rate by dynamically
t4reducing the quantization accuracy on a block-by-block basis, as
required. This assures maximum throughput in high-speed
eperipherals.
he• Programmable code size control—This mode allows definition of an
Supper limit for the size of the encoded output file so that it does not
taexceed a fixed memory buffer size. This is achieved in a single pass
www.Daof the data, with no degradation in performance.
peripheral-based applications by reducing bandwidth and storage
requirements. The PM-36 is ideal for high resolution imaging
applications such as copiers, scanners, printers and multi-function
peripherals, particularly in networked environments.
Key Features
• Conforms to ISO IS 10918-1/10918-2 JPEG baseline for grayscale
and color
• 80 MHz clock speed for sustained 80 MB/second throughput.
(Raster or Block mode operations)
• 110 MHz clock speed for sustained 110 MB/second throughput
(Block mode operations only)
• 3.3 Volt power supply
• Four selectable quantization tables
• Two pairs of loadable Huffman tables
• Programmable code rate control
• Programmable code size control (single pass)
• Raster and block data formats
• Internal 256-byte buffers on input and output ports
• I/O modes supporting transfer rates up to 40 MHz (280 MB/per
second)
• Internal Phase-Locked Loop (PLL)
• Horizontal 2:1 subsampling and upsampling support for 4:2:2
formats using 2 or 3 point filters. (Raster mode operations only)
Efficient Coding
The PM-36 features several advanced JPEG coding techniques for
improved efficiency. Four loadable Q-tables are available for
dynamic quantization control on a block-by-block basis. In addition,
The PM-36 contains two loadable Huffman table pairs, which
improves coding efficiency by allowing the system to use different
encoding factors with out reprogramming the device.
Highly Integrated
The PM-36 features an internal Phase-Locked Loop (PLL) that
enables the chip to generate its main internal clock frequency from a
lower-frequency signal. This reduces emissions and simplifies board
design, particularly in systems using low-power CPUs and no external
SRAM.
9/03-MA
Imaging-PM-36-PB-1.0












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