Muratec F-114P service manual Asic Chorus2, Flash Memory, Sdram, Main function block

Product spec and feature

2.2.4.1 ASIC (Chorus2)

The unt's S3C46Q0X 16/32-bit RISC micro controller is designed to provide a cost-effective, low power, small die size and high performance micro-controller solution for MFP.

The S3C46Q0X is developed using ARM7TDMI core, 0.18(m CMOS standard cell, and memory cell.

•Main function block

•1.8V internal, 3.3V external (I/O boundary) microprocessor with 4KByte Cache

•Image Processor

•On-chip clock generator with PLL

•Memory & External Bank Control

•DMA Control (5-channel)

•Interrupt Control

•2-port USB Host /1- port USB Device (ver 1.1) Interface Control

•UART (2 Channel)

•Synchronous Serial Interface Control

•Timer (4 Channel)

•Watch Dog Timer

•Power control: Normal, Slow, Idle, Stop and SL_IDLE mode

•A/D Converter (10-bit, 2 Channel)

•General I/O Port Control

•Print Head Control

•Carrier Motor Control

•Paper Motor Control

•Tone Generator

•RTC with calendar function

•S/W Assistant function( Rotator )

2.2.4.2Flash Memory

This stores the system program. Firmware upgrade is achieved by downloading from the new image using the PC Interface.

•Capacity : 0.5 M Byte

•Access Time : 70 nsec

2.2.4.3SDRAM

This is used as a buffer, system working memory area, etc. while printing and scanning. This memory is also used to store faxes waiting to be sent or waiting to be printed.

• Access Time : 60 nsec

Service Manual 2-16