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16 DBPXA250 and DBPXA210 Development Platforms Specification Update
Intel
®
DCPXA250 Processor Card
Intel
®
DCPXA250 Processor Card
3. VCC_PLL And VCC_CORE Pin Voltage Must Be Equal
Problem: The Intel
®
PXA250 and PXA210 Application Processors Developer’s Manual states VCC_PLL
requires VCC_CORE voltage instead of a separate voltage supply.
Implication: The PXA250 processor may not work if VCC_PLL is not equal to VCC_CORE.
Workaround: Perform the following steps to fix the problem.
1. Remove R9.
2. Add a 30-AWG wire from the R9 pad (inductor L2 side) to the positive side of C29. This can
be done on the top of the board.
Status: Fixed
Board Rev: Rev C
6. 50-MHz SDRAM Requires 0-ohm Resistors
Problem: Incorrect value resistor packs installed on Rev C DCPXA250 processor cards.
Implication: SDRAM at 50 MHz could fail.
Workaround: Replace RP7, RP8, RP9, RP12, RP13, RP15, RP16, RP17, RP18, RP19, RP20, RP21B, RP23B,
RP25B, RP26B, RP27B, RP28B with a 0-ohm resistor pack (Bourns CAY16-000J4). 0-ohm
resistors are recommended by the Intel® PXA250 and PXA210 Applications Processors Design
Guide.
Status: Fixed
Board Rev: Rev C
Figure 6. R9 Pad to C29