Overview

The LC82210 is a JPEG encoder/decoder that handles motion JPEG. When encoding, the LC82210 accepts an A/D converter generated digital video input signal and encodes that signal in real time. When decoding, the LC82210 decodes a compressed decoded signal and produces a digital video signal that can be directly input to a D/A converter.

特性 Features

? Encoding/decoding based on the JPEG standard

? The image size can be set arbitrarily.

? I/O image format Y : U : V = 4 : 2 : 2

? JPEG format Y : U : V = 4 : 2 : 2 or Y : U : V = 4 : 1 : 1

? Process 640 × 480 images 30 frames per second

? Memory control function for the image memory used

for display, capture, and other image functions

? Supports the use of either 1M, 2M, 4M, 4M × 2 or 16M

bit of DRAM for image memory.

? Supports fixed compression ratio encoding.

? Image memory can be accessed by external systems.

? Image memory compression function

? Supports a function for compressing/expanding part of

an image.

? Supports both x86 and 68xx family CPUs. Also

supports DMA transfers of compressed data.

? Low power mode

? Power-supply voltage: 3.3 V (internal) 5 V (pin) : LC82210

3.3 V (single) : LC82210L