Xerox Phaser 6100 Service Manual page 40

Summary of Product
USB 2.0 interface
USB 1.1 backward compatible UDC (USB Device Controller) block and USB Physical block are integrated
Both of High Speed (480 Mbps) and Full Speed (12 Mbps) are supported
2 DMA channels support: one RX Channel and one TX Channel
3) Memory Block
The operating program runs from memory (see below). It is used to store video data and print jobs from the host.
Standard factory fitted memory is 64MB, and can be expanded using a DIMM module mounted in the SODIMM
connector. DIMMs from 64Mb - 128MB can be used giving a total of up to 192MB of memory.
modules are non-standard and not currently supported
controls the SDRAM memory connected using a 32 bit 60 MHz bus.
4) ROM Block
An 2MB flash ROM is used to store the OS. After power on, the contents of ROM are downloaded into memory
and the OS is run from within memory.
5) USB 2.0 Block
Is used to provide support for USB 2.0 and is capable of interface speeds up to 480 Mbps.
6) IEEE 1284 Block
An IEEE 1284 controller is controlled directly by the SPGPm processor. ECP mode is supported.
7) Option Block
An Ethernet card can be attached using the 100 pin connector. It is connected directly to the SPGPm processor
and communicates using a 16 bit bus.
8) Control Panel
The control panel is controlled by a UART Block located in the SPGPm.
9) Memory
There are two types of memory, program memory; that uses flash and a working memory that uses SDRAM.
10) Sensors
Various sensors are used to detect various conditions during the print process.
11) Actuator Control
Drives the various motors and clutches that are required for the paper feed and print process.
12) ADC (Analog to Digital Conversion)
Detects the current of: imaging unit, transfer belt, transfer roller, and fusing temperature, waste agitator, DC
motor CRUM reader board, set temperature, and CTD sensing.
13) DAC
Controls the output of the LED on the CTD Sensor.
4-12
. The memory controller is located in the SPGPm
Note: DIMM