EWIXP420ABBT Intel, EWIXP420ABBT Datasheet - Page 88

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EWIXP420ABBT

Manufacturer Part Number
EWIXP420ABBT
Description
Manufacturer
Intel
Datasheet

Specifications of EWIXP420ABBT

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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Table 29.
Table 30.
A.8
Table 31.
Intel
Hardware Design Guidelines
88
®
IXP42X Product Line of Network Processors and IXC1100 Control Plane Processor
UART Interfaces (Sheet 1 of 2)
Expansion Bus Configuration Register 0 (Sheet 2 of 2)
Setting the Intel XScale
Note that the Intel XScale processor can operate at slower speeds than the factory
programmed speed setting. This is done by placing a value on Expansion bus address
bits 23,22,21 at the de-assertion of RESET_IN_N and knowing the speed grade of the
part from the factory. Column 1 of
the factory. Columns 2, 3, and 4 denote the values captured on the Expansion Bus
address bits at the de-assertion of reset. Column 5 represents the speed at which the
Intel XScale processor speed will now be operating.
UART Interface
RXDATA0
TXDATA0
CTS0_N
RTS0_N
RXDATA1
TXDATA1
††
(Factory Part Speed)
Name
Processor Speed
Intel XScale
Bit
0
For a legend of the
For new designs, this signal should be pulled high with a 10-KΩ resistor when not being utilized in the
system. No change is required to existing designs that have this signal pulled low.
533 MHz
533 MHz
533 MHz
533 MHz
400 MHz
400 MHz
400 MHz
400 MHz
266 MHz
266 MHz
266 MHz
266 MHz
Type
Intel
O
O
O
I
I
I
®
®
Should be pulled high
utilized in the system.
No external circuitry needed.
Should be pulled high through a 10-KΩ resistor when not being utilized
in the system.
No external circuitry needed.
Should be pulled high
utilized in the system.
No external circuitry needed.
IXP42X product line and IXC1100 control plane processors—Design Checklist
8/16 FLASH
Type
EX_ADDR(23)
Name
CFG_EN_N
®
Processor Operation Speed
codes, see
1
0
0
0
1
0
0
0
1
0
0
0
Table 30
††
††
Table 21 on page
EX_ADDR(22)
Specifies the data bus width of the FLASH memory device.
through a 10-KΩ resistor when not being
through a 10-KΩ resistor when not being
• 0 = 16-bit data bus
• 1 = 8-bit data bus
Recommendation
CFG1
0
0
0
1
0
0
0
1
0
0
0
1
denotes the speed grade of the part from
81.
EX_ADDR(21)
CFG0
Description
0
0
1
1
0
0
1
1
0
0
1
1
Document Number: 252817-008US
ProcessorSpeed
533 MHz
533 MHz
400 MHz
266 MHz
400 MHz
400 MHz
400 MHz
266 MHz
266 MHz
266 MHz
266 MHz
266 MHz
Actual
(MHz)
December 2007
Complete?