S U M M A RY OF PRO D U C T
4.4.1 Asic(SPGPm)
1) ARM946ES
-
-16KB instruction cache and 16KB data cache
-No Tightly Coupled Memory
-Memory Protection Unit & CP15 control program
2)Dual bus architecture for bus traffic distribution
- AMBA High performance Bus (AHB) - System Bus with SDRAM
3)IEEE1284 compliant parallel port interface
4)Printer Video Controller for LBP engines
5)Graphic Execution Unit for Banding support of Printer Languages
6)Printer Video Controller for LBP engines
-PVC : Printer Video Controller without RET Algorithm
-HPVC : Printer Video Controller with RET algorithm
(Line Memory & Lookup Table Memory : 512 x 8 , 4096 x 16)
7)Engine Controller
- Motor Control Unit
- Motor Speed Lookup Table Memory (128 x 16 x 2) - Pulse Width Modulation Unit
- 4 Channels are supported - ADC Interface Unit
- 3 ADC Channels are available
- ADC Core (ADC8MUX8) maximum clock frequency : 3 MHz
8)USB 2.0 Interface
9)Package : 272 pins PBGA
10)Power : 1.8V(Core), 3.3V(IO) power operation
11)Speed : 166MHz core(ARM946ES) operation, 60MHz bus operation
4.4.2 Memory
1) Flash Memory
-It stores the System Program, downloads the System program through PC Interface, and compresses the PCL font, then stores it.
-Capacity : 2M Byte
-Access Time : 70 nsec
2) DRAM
- It is used as Swath buffer, System working memory area, etc. when printing. It stores the font list, com- pressed into flash memory, on DRAM and uses it as PCL font.
-Capacity : 8M Byte (Basic), upto 64M Byte (Factory Option)
-Type : SDRAM 100MHz/133MHz , 16bit
Service Manual
