Memory Components - Xerox WorkCentre 7220 Information

2.2.2. Memory Components

Volatile Memory Description
Type (SRAM, DRAM, etc)
DDR3 SDRAM non ECC –
System Memory
DDR2 SDRAM non ECC –
Image Memory
DDR2 SDRAM non ECC – Page
Buffer
SRAM
Additional Information:
There are two main blocks of Volatile memory in the controller, System and Image memory. System memory contains a
mixture of executable code, control data and job data. Job data exists in System memory while the job is being processed.
Once the job is complete the memory is reused for the next job. Likewise Image memory holds job data in a proprietary
format while the job is being processed. Once the job is complete the image memory is reused for subsequent jobs.
Non-Volatile Memory Description
Type (Flash, EEPROM,
etc)
SD CARD
EEPROM
Flash
Battery Backed SRAM
EEPROM
Additional Information:
All memory listed above contains code for execution and configuration information. No user or job data is stored in these
locations.
Ver. 1.0, January 2013
WorkCentre 7220-7225 Information Assurance Disclosure Paper
Size User Modifiable
(Y/N)
2GB N
1GB N
512MB N
1MB N
Size User
Modifiable
(Y/N)
4GB via Diagnostics
1Mb Via Diagnostics
38KB Via Diagnostic
6kB Via Diagnostic
1Mb Via Diagnostics
Table 2 Controller volatile and non-volatile memory components
Function or Use
Executable code, Printer control
data, temporary storage of job
data
Image data - copy/scan/print/Fax
Scan image page buffer
JPEG image processing buffer
Function or Use
Control set points, configuration
settings, Boot Memory
Programs Taurus ASIC
Boot sector for power manager,
MAC address
Power manager variables
Programs Taurus ASIC
Page 10 of 61
Process to Clear:
Power Off System
Power Off System
Power Off System
Power Off System
Process to Clear:
Diagnostic
Diagnostic
Diagnostic
Diagnostic
Diagnostic