Formatter system The formatter coordinates the major systems. It is responsible for the following: controlling the scanner formatter formatting and controlling copies receiving and processing print data from the printer interface monitoring the control panel and relaying printer status information developing and coordinating data placement and timing with the print engine communicating with the host computer through the bidirectional interface communicating document data to and from the LIU The formatter receives print data from the bidirectional Extended Capabilities Port (ECP) mode interface or Universal Serial Bus (USB) interface and converts it into a dot image.
The ECU synchronizes the image formation system with the paper-feed system and signals the formatter to send the print image data. The formatter sends the print image data (dots) in the form of a video signal, and the printing process begins. Central processing unit The formatter incorporates an embedded Coldfire V3 microprocessor operating at 90 MHz. Line Interface Unit (LIU) The LIU provides the required safety isolation, signal coupling, and impedance matching between the telephone line and the modem chipset. Scanner formatter PCA The scanner formatter manages the functions of the control panel, and controls audio, scanning, and the ADF.
It relays scanning data, control panel data, and other control data to the main formatter PCA. 76 Chapter 4 - Operational overview EN