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Intel PXA250 and PXA210 Applications Processors

Intel PXA250 and PXA210 Applications Processors

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System Memory Interface<br />

Figure 2-4. Expansion Card External Logic for a Two-Socket Configuration<br />

<strong>PXA250</strong><br />

<strong>Applications</strong><br />

Processor<br />

D(15:0)<br />

Socket 0<br />

D(15:0)<br />

nPCEx<br />

DIR OE#<br />

Socket 1<br />

D(15:0)<br />

nPOE<br />

nPIOR<br />

nPCEx<br />

DIR OE#<br />

GPIO(w)<br />

CD1#<br />

CD2#<br />

GPIO(x)<br />

CD1#<br />

CD2#<br />

GPIO(y)<br />

RDY/BSY#<br />

GPIO(z)<br />

RDY/BSY#<br />

PSKTSEL<br />

MA(25:0)<br />

nPREG<br />

A(25:0)<br />

REG#<br />

nPCE(1:2)<br />

nPOE,<br />

nPWE<br />

nPIOW,<br />

nPIOR<br />

6 6<br />

6<br />

CE(1:2)#<br />

OE#<br />

WE#<br />

IOR#<br />

IOW#<br />

WAIT#<br />

A(25:0)<br />

REG#<br />

CE(1:2)#<br />

OE#<br />

WE#<br />

IOR#<br />

IOW#<br />

nPWAIT<br />

WAIT#<br />

IOIS1616#<br />

nPIOIS16<br />

IOIS1616#<br />

A8863-02<br />

2-12 <strong>PXA250</strong> <strong>and</strong> <strong>PXA210</strong> <strong>Applications</strong> <strong>Processors</strong> Design Guide

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