[Yaffs] [Yaffs-archive] Physical block 0 in NAND flash devices

Thu, 17 Jun 2004 10:06:47 -0700

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Dear GUXM et al.

The reason for physical block 0 being used differently and reserved is that
it is the *only* block in NAND flash devices that the manufacturer
guarantees to be free of defects. All other blocks in the device are subject
to being mapped out at the foundry, or later in the field.

Check the documentation for your physical devices.

Cheers

       Don

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<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Dear GUXM et al.<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

The reason for physical block 0 being used =
differently and
reserved is that it is the *only*
block in NAND flash devices that the manufacturer guarantees to be free =
of
defects. All other blocks in the device are subject to being mapped out =
at the
foundry, or later in the field.<o:p></o:p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Check the documentation for your physical =
devices.<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Cheers<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
Don<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

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