EWIXP425BBT Intel, EWIXP425BBT Datasheet - Page 27
![no-image](/images/manufacturer_photos/0/3/336/intel_sml.jpg)
EWIXP425BBT
Manufacturer Part Number
EWIXP425BBT
Description
Manufacturer
Intel
Datasheet
1.EWIXP425BBT.pdf
(130 pages)
Specifications of EWIXP425BBT
Core Operating Frequency
266MHz
Package Type
BGA
Pin Count
492
Mounting
Surface Mount
Operating Temperature (max)
85C
Operating Temperature (min)
-40C
Operating Temperature Classification
Industrial
Lead Free Status / Rohs Status
Compliant
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Intel
Figure 6.
2.2.1
August 2006
Document Number: 252479-006US
®
IXP42X product line and IXC1100 control plane processors
Intel XScale
Super Pipeline
The super pipeline is composed of integer, multiply-accumulate (MAC), and memory
pipes.
The integer pipe has seven stages:
• 32-Kbyte instruction cache can hold entire programs, preventing processor stalls
• 32-Kbyte data cache reduces processor stalls caused by multi-cycle memory
• 2-Kbyte mini-data cache for frequently changing data streams avoids “thrashing”
• Four-entry fill-and-pend buffers to promote processor efficiency by allowing “hit-
• Eight-entry write buffer allows the processor to continue execution while data is
• Multiple-accumulate coprocessor that can do two simultaneous, 16-bit, SIMD
• Performance monitoring unit (PMU) furnishing two 32-bit event counters and one
• JTAG debug unit that uses hardware break points and 256-entry trace history
caused by multi-cycle memory accesses
accesses
of the D-cache
under-miss” operation with data caches
written to memory
multiplies with 40-bit accumulation for efficient, high-quality media and signal
processing
32-bit cycle counter for analysis of hit rates, etc.
This PMU is for the Intel XScale
monitoring of internal bus performance.
buffer (for flow-change messages) to debug programs
Coprocessor Interface
Accumulate
®
Multiply
IRQ
FIQ
Technology Block Diagram
Intel
®
IXP42X Product Line of Network Processors and IXC1100 Control Plane Processor
Interrupt
Request
Execution
Management
Core
Instruction
System
Address
®
Data
Data
processor only. An additional PMU is supplied for
Branch Target Cache
Instruction Cache
Mini-Data Cache
Data Cache
Debug/
JTAG
32 KB
PMU
32 KB
2 KB
M
M
M
M
U
U
South
AHB
Bus
A9568-02
Datasheet
27
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