PRIXP425BC 869083 Intel, PRIXP425BC 869083 Datasheet - Page 27

• Manufacturer Part Number: PRIXP425BC 869083
• Manufacturer: Intel

Specifications of PRIXP425BC 869083

• Core Operating Frequency: 400MHz
• Package Type: BGA
• Pin Count: 492
• Mounting: Surface Mount
• Operating Temperature (max): 70C
• Operating Temperature (min): 0C
• Operating Temperature Classification: Commercial
• Lead Free Status / Rohs Status: Compliant

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