ZC0302 Просмотр технического описания (PDF) - Unspecified

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ZC0302

VGA & CIF USB PC Camera Controller

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ZC0302

VGA & CIF USB PC Camera Controller

2.3. USB Features

Built-in USB transceiver

Suspend and Remote wakeup

3 interface for video, audio and control

Programmable OEM USB parameters by EEPROM including: vendor ID, product ID, MaxPower, serial Number,

manufacture descriptor, product descriptor and chip revision.

2.4. Image Signal Processing

Hardware Dead Pixel Detection/Concealment

8/9-bit RGB raw data input from CMOS image sensor

2-wire/3-wire serial bus interface to CMOS image sensor

Programmable white balance, color correction and gamma correction

Support automatic Exposure Control, automatic White Balance, automatic CMOS Reset Level Control,

automatic Gain Control and auto/manual Histogram Equalization

Support programmable AE/AWB windows

Support edge enhancement and noise removal

Support 2x2 Sub-Sampling

2.5. Raster

The output data format is 4:2:2 YCbCr

Change the input image data to 8x8 block data format required by the DCT

2.6. Compression Engine

Standard JPEG compression engine comply to ISO/IEC 10918-1 (JPEG)

2 AC and 2 DC Huffman code table

4 quantization tables for different image quality

Adjustable compression rate by Bit Rate Control (BRC) engine

Simplified JPEG header for better performance are programmable

VGA @ 15fps, CIF/SIF up to 30 fps

Adjustable frame rate for efficient bandwidth usage

2.7. Audio Interface

Built-in 16-bit mono audio ADC for audio recording through microphone

Sampling rate @ 8K/16K Hz

USB audio device class 1.0 compliance

2.8. System Controller

Providing the control to ISP, JPEG, and USB blocks

Configuring the control registers

Chip clock generation

6

Mar. 2002

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