Intel DBPXA210 Intel DCPXA250 Processor Card, Vccpll And Vcccore Pin Voltage Must Be Equal

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

Figure 6. R9 Pad to C29

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

16 DBPXA250 and DBPXA210 Development Platforms Specification Update