PRIXP422BB 869384 Intel, PRIXP422BB 869384 Datasheet - Page 24
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PRIXP422BB 869384
Manufacturer Part Number
PRIXP422BB 869384
Description
Manufacturer
Intel
Datasheet
1.PRIXP422BB_869384.pdf
(130 pages)
Specifications of PRIXP422BB 869384
Core Operating Frequency
533MHz
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
Datasheet
24
®
IXP42X Product Line of Network Processors and IXC1100 Control Plane Processor
PCI Controller
The IXP42X product line and IXC1100 control plane processors’ PCI controller is
compatible with the PCI Local Bus Specification, Rev. 2.2. The PCI interface is 32-bit
compatible bus and capable of operating as either a host or an option (i.e., not the
Host) For more information on PCI Controller support and configuration see the Intel
IXP42X Product Line of Network Processors and IXC1100 Control Plane Processor
Developer’s Manual.
SDRAM Controller
The memory controller manages the interface to external SDRAM memory chips. The
interface:
The memory controller only supports 32-bit memory. If a x16 memory chip is used, a
minimum of two memory chips would be required to facilitate the 32-bit interface
required by the IXP42X product line and IXC1100 control plane processors. A maximum
of four SDRAM memory chips may be attached to the processors. For more information
on SDRAM support and configuration see the Intel
Processors and IXC1100 Control Plane Processor Developer’s Manual.
The memory controller internally interfaces to the North AHB and South AHB with
independent interfaces. This architecture allows SDRAM transfers to be interleaved and
pipelined to achieve maximum possible efficiency.
The maximum burst size supported to the SDRAM interface is eight 32-bit words. This
burst size allows the best efficiency/fairness performance between accesses from the
North AHB and the South AHB.
Expansion Bus
The expansion interface allows easy and — in most cases — glue-less connection to
peripheral devices. It also provides input information for device configuration after
reset. Some of the peripheral device types are flash, ATM control interfaces, and DSPs
used for voice applications. (Some voice configurations can be supported by the HSS
interfaces and the Intel XScale
algorithms.)
The expansion bus interface is a 16-bit interface that allows an address range of
512 bytes to 16 Mbytes, using 24 address lines for each of the eight independent chip
selects.
Accesses to the expansion bus interface consists of five phases. Each of the five phases
can be lengthened or shortened by setting various configuration registers on a per-
chip-select basis. This feature allows the IXP42X product line and IXC1100 control
plane processors to connect to a wide variety of peripheral devices with varying speeds.
The expansion bus interface supports Intel or Motorola* microprocessor-style bus
cycles. The bus cycles can be configured to be multiplexed address/data cycles or
separate address/data cycles for each of the eight chip-selects.
Additionally, Chip Selects 4 through 7 can be configured to support Texas Instruments
HPI-8 or HPI-16 style accesses for DSPs.
• Operates at 133.32 MHz (which is 4 * OSC_IN input pin.)
• Supports eight open pages simultaneously
• Has two banks to support memory configurations from 8 Mbyte to 256 Mbyte
Intel
®
processor, implementing voice-compression
®
IXP42X product line and IXC1100 control plane processors
®
IXP42X Product Line of Network
Document Number: 252479-006US
August 2006
®
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