Samsung CLP-300 Series Service Manual page 27

3.2.3 Main PBA Description
1) CHORUSm
CHORUSm involves in itself the functions to control ARM Processor Core and various H/W devices. CHORUSm,
therefore, controls Main PBA and all engine mechanism, processing the print job received from host and enabling the
engine to print image.
Function
Process
0.13um Technology
Package
496 PBGA
CPU Core
ARM 920T - 300MHz
Cache : I-Cache 16KB, D-Cache 16KB
System Bus
32-bit width, 100MHz
SDRAM Controller
32-bit width, 100MHz operation
5 Banks, Up to 128MB Address space per Bank
Programmable Timing to Control SDRAM A.C Characteristics
Support Self Refresh for Data Retention
ROM Controller
32-bit width, 4 Banks, Up to 16MB Address space per Bank
Burst Capability
Programmable Timing per Bank
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