Xerox WORKCENTRE 3210

2-20 WorkCentre 3210/3220 Multifunction Printer Service Manual
Theory of Operation
Controller Part
■ Performs electro-photography
■ Memory control (DDR2 SDRAM, NOR FLASH, Serial FLASH, EEPROM)
■ Handles signal between each driver and PC interface
■ Clock generation
Engine Part
■ Motor Control (BDLC, Stepping)
■ ADF Motor Interface (ADF reserved)
■ LSU (2 beam LVDS Type) control
■ Fuser control (On/Off)
■ I/O signal handling (Sensor/Clutch signal)
■ OPE/ CIS / MODEM / SCF control
■ CRUM control
■ Fan control
Asic (CHRUS3)
Description Specifications
Package
■ 412 PBGA (Total pad number: 412 [each])
Voltage
■ Core Voltage: 1.0 V
■ I/O Pad Voltage: 3.3 V
CPU Core
■ ARM926EJS (16KB I-cache, 16 KB D-cache)
Operating Frequency
■ 400 MHz
DDRC
■ DDR 1, 2 Combo
■ 32 Bits Data Width (internal), 16 Bits Data Width
(external)
■ 133 MHz DRAM interface
■ 16 to 128 MB Array (up to 512 MB total)
■ Supports 4 AHB Slave Ports for individual memory
access
■ Supports 4 bank DDR1 SDRAM and 4 & 8 bank DDR2
SDRAM
■ Supports up to 4 DRAM ranks (chip select output)
ROMC
■ 2 channel NOR Flash Controller
IOC
■ Supports 4 channel external I/O device, 2 channel DMA
I/O
DMAC
■ Contains 3 channels
HPVC
■ Supports 32 bits AHB Master I/F
■ A4 2400 dpi, A3 1200 dpi addressable
■ Supports 200, 300, 400, 600 dpi
■ Supports 4 channels single/dual beam