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<a name="1211660"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">2 Creating EMI configuration爁iles</font>
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<a name="1231826"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">This chapter describes the tool <strong>stemi</strong> which generates the configuration values for ST External Memory Interface (EMI) devices. The EMI controls external memory, and before external memory can be used, the EMI must be configured. The user supplies the EMI configuration parameters to <strong>stemi</strong>, which generates a file that contains the pokes to the EMI registers. In addition, <strong>stemi</strong> can be given a file containing poke commands to "decode", from which it generates a list of corresponding EMI configuration parameters. <strong>stemi</strong> interprets the toolset command language defined in <a href="part4.htm#1204411"><font color="#0000ff" face="Verdana, Arial, Helvetica, sans-serif"><i>Part 4 Command language</i></font></a>. <strong>stemi</strong> is supported on a PC host running Windows.</font>
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<a name="1204418"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">Three ST EMI parts are currently supported: EMI2, EMI3 and EMI4.</font>
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<p> <font size=2 face="Verdana, Arial, Helvetica, sans-serif"><li ><a name="1204419"> </a>EMI2 supports DRAM, FLASH and peripheral devices.</font></p>
<p> <font size=2 face="Verdana, Arial, Helvetica, sans-serif"><li ><a name="1204420"> </a>EMI3 is the same as EMI2 with additional support for SDRAM.</font></p>
<p> <font size=2 face="Verdana, Arial, Helvetica, sans-serif"><li ><a name="1204421"> </a>EMI4 supports MPX, SDRAM, FLASH and peripheral devices.</font></p>
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<a name="1204422"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">For example, the chip STi5510 has an EMI2, whereas the chip STi5512 has an EMI3 device. Refer to the relevant device datasheet for details of the device's EMI characteristics.</font>
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<font size=1 face="Verdana, Arial, Helvetica, sans-serif"> © 2001, 2002, 2003 STMicroelectronics. All Rights Reserved.<br>
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