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PM-36

JPEG Image Processor

Zoran Corporation 

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

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