參數(shù)資料
型號(hào): PC8260MTPU150
廠商: Atmel Corp.
英文描述: PowerPC-based Communications Processors
中文描述: 基于PowerPC的通信處理器
文件頁(yè)數(shù): 3/53頁(yè)
文件大?。?/td> 364K
代理商: PC8260MTPU150
3
PC8260PowerQUICCII
2131B–HIREL–02/03
PC8260Architecture
GeneralOverview
ThePC8260hastwoexternalbusestoaccommodatebandwidthrequirementsfromthe
highspeedsystemcoreandtheveryfastcommunicationschannels.Thedeviceiscom-
posedofthefollowingthreemajorfunctionalblocks:
A64-bitPowerPCcorederivedfromtheEC603ewithMMUsandcaches.
Asysteminterfaceunit(SIU).
Acommunicationsprocessormodule(CPM).BoththesystemcoreandtheCPM
haveaninternalPLL,whichallowsindependentoptimizationofthefrequenciesat
whichtheyrun.ThesystemcoreandCPMarebothconnectedtothe60xbus.
Figure1.
PC8260BlockDiagram
MCC
MCC
FCC
FCC
FCC
SCC
SCC
SCC
SCC
SMC
SMC
SPI
Clock Counter
Memory Controller
Bus Interface Unit
System Functions
60x-to-Local Bus Bridge
60x-to-PCI Bus Bridge
(PC8265 only)
I C
2
PCI/
Local
Bus
Time Slot Assigner
Serial Interface
8 TDMs
2 UTOPIA
3 Mlls
Non-Multiplexed I/O
60x Bus
16-Kbyte
Instruction Cache
16-Kbyte
Data Cache
IMMU
DMMU
EC603e
PowerPC
Core
Timers
Parallel I/O
Baud Rate
Generator
Interrupt
Controller
24-Kbyte Dual-
Port RAM
32-Bit RISC Communications
Processor (CP) and
Program ROM
Serial DMAs
4 Virtual
IDMAs
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