FWIXP420BB Intel, FWIXP420BB Datasheet - Page 21

• Manufacturer Part Number: FWIXP420BB
• Description: IC NETWRK PROCESSR 266MHZ 492BGA
• Manufacturer: Intel

Specifications of FWIXP420BB

• Processor Type: Network
• Features: XScale Core
• Speed: 266MHz
• Voltage: 1.3V
• Mounting Type: Surface Mount
• Package / Case: 492-BGA
• Core Operating Frequency: 266MHz
• 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: Contains lead / RoHS non-compliant
• Other names: 852278

Status:
12.
Problem:
Intel
®
IXP42X Product Line of Network Processors and IXC1100 Control Plane Processor
No
The Intel
Some SDRAM Devices (SCR 2411)
Although the Intel
JEDEC SDRAM specification, some SDRAM manufacturers are shifting their devices’ implemen-
tation of an optional section of the specification, to maintain consistency between SDRAM
Single-Data-Rate (SDR) Memory and SDRAM Double-Data-Rate (DDR) Memory. That results in
an issue involving the Mode Register Set command.
In order to support vendor-specific, extended modes, the SDRAM must receive the Mode Register
Set command with the Bank Address (BA) bits set to a particular value. For normal operation, the
BA bits must be set to logic 00, during the Mode Register Set command.
The Intel
during the Mode Register Set Command. The JEDEC SDRAM specification states that the BA
values must be put to a valid state during the Mode Register Set command. However, the DDR
options to this specification require that the BA bits be set to support extended modes.
Memory known to work
Additional information may be added to this list as more data is collected.
Memory known to fail
1. Read LSR and check for errors.
2. Disable Receiver Time-out Interrupt Enable (RTOIE) via Interrupt Enable Register (IER) bit 4.
3. Read Data from FIFO.
4. Software Delay.
5. Read LSR, check for errors, and LOOP back to (3) if DR bit in LSR is SET.
6. No more data in FIFO: Re-enable RTOIE interrupt via IER bit 4.
7. DONE.
•
•
•
•
Fix.
Micron*
Winbond*
Elpida*
Winbond — W987Z6CB
— MT48LC8M16A2
— MT48LC16M16A2
— MT48LC32M16A2
— W981216BH
— W982516BH
— UPD45128163
— HM5225165B
— HM5259165B
— HM5257165B
®
®
IXP42X product line and IXC1100 control plane processors sets these bits to logic 11,
IXP425 A-0 Step Processor May Have Problems Working With
®
IXP42X product line and IXC1100 control plane processors comply with the
Non-Core Errata
21