PM-36 Datasheet, PDF (1/2 Pages) Zoran Corporation – JPEG Image Processor

PM-36
JPEG Image Processor
Imaging
Driving the Digital Lifestyle
Software
Processors Quatro SOCs Solutions
Product Brief
Zoran Corporation
1390 Kifer Road
Sunnyvale, CA 94086-5305
www.zoran.com
The PM-36 is a fixed-function Codec device that delivers high
speed JPEG compression/decompression of color and
grayscale image data. An ISO standard for lossy image
compression, JPEG can reduce the size of image data without
a noticeable difference in image quality. This improves system
performance of 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 multifunction peripherals, particularly in networked
environments.
Benefits
Key Features
• High Performance–JPEG Imaging Codec–Delivers sustained
data rates of up to 110 MB per second
• Efficient Coding–four loadable Q-Tables and two loadable
Huffman table pairs
• Highly Integrated–Internal Phase-Locked Loop (PLL)
• 3.3 Volt supply–5 Volt Tolerant I/O
• Standard Compliant–ISO IS 10918-1/10918-2
Description
• 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)
High Throughput
The PM-36 can sustain data rates of 80 or 110 MB per second to
support real time operations. In addition, it implements two advanced
features that maximize throughput and system performance:
• Programmable code rate control–This optional mode limits the
encoded output data bandwidth to a predefined rate by
dynamically reducing the quantization accuracy on a block-by-
block basis, as required. This assures maximum throughput in
high-speed peripherals.
• Programmable code size control–This mode allows definition of an
upper limit for the size of the encoded output file so that it does
not exceed a fixed memory buffer size. This is achieved in a single
pass of the data, with no degradation in performance.
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.
01/06-MMCP
Imaging-PM-36-PB-1.2