PRIXP420BB Intel, PRIXP420BB Datasheet - Page 23

• Manufacturer Part Number: PRIXP420BB
• Description: IC NETWRK PROCESSR 266MHZ 492BGA
• Manufacturer: Intel

Specifications of PRIXP420BB

• Processor Type: Network
• Features: XScale Core
• Speed: 266MHz
• Voltage: 1.3V
• Mounting Type: Surface Mount
• Package / Case: 492-BGA
• 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: Lead free / RoHS Compliant
• Other names: 866260

Status:
14.
Problem:
Implication:
Workaround:
Status:
15.
Problem:
Implication:
Workaround:
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16.
Problem:
Implication:
Workaround:
Status:
Intel
®
IXP42X Product Line of Network Processors and IXC1100 Control Plane Processor
rate to 1 in every 64 DMA 8-word PCI transfers. This prevented the deadlock and subsequent
lock-up condition.
No
PCI Doorbell Register Lock-up Condition When Using Two Products
Together That Have Intel
IXC1100 Control Plane Processor (SCR 2379)
It is possible that the PCI bus can get in a locked condition when multiple products — using
IXP42X product line and IXC1100 control plane processors — are connected in a system and these
systems are using the PCI doorbell registers of the IXP42X product line and IXC1100 control plane
processors. This lockup only occurs when both of the IXP42X product line and IXC1100 control
plane processors attempt to access each other’s PCI doorbell register at a particular instant. This
error occurs only on reads of the of the doorbell register.
When using two products using IXP42X product line and IXC1100 control plane processors and
their PCI doorbell registers, PCI doorbell register reads cannot be implemented.
Only do doorbell register write from PCI bus to generate interrupt, and use regular memory to pass
information.
No
PCI Controller Returns Infinite Retries on PCI After AHB Pre-Fetch Error
(SCR 1289)
If an external PCI master performs a memory read operation targeting the IXP42X product line and
IXC1100 control plane processors, and the last word read is ‘close’ to a hole in the AHB memory
map — for example, if the read was close to the top of the 1 Gbyte of SDRAM space — the
IXP42X product line and IXC1100 control plane processors may retry all subsequent inbound PCI
transactions; this locks up the PCI target interface.
This problem occurs because inbound PCI reads are pre-fetch on the AHB bus. If the read is close
to the top of a valid memory region that borders a reserved memory region, the pre-fetch read on
AHB may cross into the reserved region and produce an error response on the AHB. Under certain
conditions, this error condition is not cleared properly and results in retry responses to all following
PCI transactions that target the IXP42X product line and IXC1100 control plane processors. The
initial read completes normally on PCI.
The IXP42X product line and IXC1100 control plane processors do not support the alias of above
256 Mbyte of SDRAM memory space.
None.
No
UART Break Indicator (SCR 2929)
When the UART break indicator is de-asserted, it is possible for the UART to detect a start bit and
receive an incorrect 0xFF byte. This 0xFF byte has no indicators set.
UART may receive an incorrect 0xFF byte and have no indicators set.
Under investigation.
No
Fix.
Fix.
Fix.
Fix.
®
IXP42X Product Line of Network Processors and
Non-Core Errata
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