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PC8260 датащи(PDF) 3 Page - ATMEL Corporation

номер детали PC8260
подробное описание детали  PowerPC-based Communications Processors
PDF  53 Pages
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производитель  ATMEL [ATMEL Corporation]
домашняя страница  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

PC8260 датащи(HTML) 3 Page - ATMEL Corporation

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PC8260 PowerQUICC II
2131B–HIREL–02/03
PC8260 Architecture
General Overview
The PC8260 has two external buses to accommodate bandwidth requirements from the
highspeed system core and the very fast communications channels. The device is com-
posed of the following three major functional blocks:
•
A 64-bit PowerPC core derived from the EC603e with MMUs and caches.
•
A system interface unit (SIU).
•
A communications processor module (CPM). Both the system core and the CPM
have an internal PLL, which allows independent optimization of the frequencies at
which they run. The system core and CPM are both connected to the 60x bus.
Figure 1. PC8260 Block Diagram
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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