HT82V70数据手册Holtek中文资料规格书

描述 Description

The HT82V70 is a fully integrated device for CIS imaging application. It features programmable timing generator and image sensor shading correction to sample and condition the outputs of CIS (Contact Image Sensor) arrays for high-speed double-sided scanner applications.

With up to two AFE HT82V48 ICs, it can support two 3~6-channel inputs up to 240MSPS. Intelligent image sensor shading correction is then employed on each sensor element. The sensor data can be not only corrected but also averaged per line for black level calculations. The Video Processing Front End (VPFE) Interface multiplexed shaded ADC’s outputs two high-bytes for each ADC’s output or one 16-bit wide output for each ADC. A pixel clock PCLK transports the  16-bit wide data to the output port.

The internal registers are programmed through a 2-wire I²C or 3-wire/4-wire SPI interface, for timing control, gain, offset and operating mode adjustments.

 

特性 Features

• 3.3V operating voltage
• Up to 240MSPS for two 6-channel inputs
• Programmable CIS module timing generator
•  Image sensor shading correction
- 0 ~ -255 8-bit dark shading (offset) correction
- 0.00x~8.00x 10-bit white shading (gain) correction
- Embedded memory for up to 6 component coefficients of 1584 sensor elements
• Flexible frame start/stop control mechanism
• Provide Image line information
- line index
- Left and right boundary of a line
- max/min/summation/histogram information of a line
• 8/16-bit image data output in VPFE or EMIF interface
• 3-wire/4-wire SPI interface
• 2-wire I²C interface
• Built in voltage comparator for roller input signal
• 100-pin LQFP package