Oki OKIFAX 5750 Service Manual page 825

Service Guide OKIFAX 5750/5950 Page:
Chapter A Board Descriptions
A3.1.3 Scanner Control
Overview
This system uses a monochromic 300-DPI image sensor. It also uses a 1-chip LSI for sensor control.
The overall block diagram is shown on the next page.
(1) Interface
The IOGA5 receives image data from the sensor control LSI, and sends it to the host CPU in blocks of 16 bits (2 words).
(2) Sensor Specifications
Pixel density: 300 DPI
Number of significant pixels: 2552 dots
Pixel clock frequency: 2.5 MHz
The input signal timing chart is shown below.