LM9832 Overview
The LM9832 is a plete USB image scanner system on a single IC. The LM9832 provides all the functions (image sensor control, illumination control, analog front end, pixel processing function image data buffer/DRAM controller, microstepping motor controller, and USB interface) necessary to create a high performance color scanner. The LM9832 scans images in 42 bit color/14 bit gray, and has output data formats for 42...
LM9832 Key Features
- 14 bit ADC digitizes at up to 6Mpixels/s (2M RGB pixels/sec)
- Provides 50-2400dpi vertical resolution in 1 dpi increments
- Pixel rate error correction for gain (shading) and offset errors
- Supports 4 or 16Mbit external DRAMs
- Multiple CCD clocking rates allows matching of CCD clock to scan resolution and pixel depth for maximum scan speed
- Stepper motor control tightly coupled with image data buffer management to maximize data transfer efficiency
- PWM stepper motor current control allows microstepping for the price of fullstepping
- USB interface for Plug and Play operation on USB-equipped puters
- Serial EEPROM option for custom Vendor and Product IDs
- Support for USB bus-powered operation