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<h1>LatticeMico Timer &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<a title="View Data Sheet" href="timer.pdf" target="_blank" onmouseover="if ((parseInt(navigator.appVersion) == 4) && (navigator.appName == 'Netscape')) ehlp_showtip(this,event,'View Data Sheet');" onmouseout="if ((parseInt(navigator.appVersion) == 4) && (navigator.appName == 'Netscape')) ehlp_hidetip();"><img src="ds_icon_ast.jpg" x-maintain-ratio="TRUE" width="29px" height="31px" border="0" class="img_whs1"></a></h1>

<p>The LatticeMico timer is a highly configurable countdown timer with 
 a WISHBONE-compliant slave interface compatible with the LatticeMico microprocessor. 
 &nbsp;</p>

<p class="whs2"><span style="font-style: italic;"><I>*If the 
 data sheet fails to open, see the note at the bottom of this page.</I></span></p>

<h2>Revision History</h2>

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<p class=Table
	style="font-weight: bold;">Version</td>
<td bgcolor="#DEE8F4" width="502px" class="whs8">
<p class=Table
	style="font-weight: bold;">Description</td></tr>

<tr valign="top" class="whs6">
<td colspan="1" rowspan="1" width="87px" class="whs9">
<p class=Table
	style="font-weight: normal;"><span style="font-weight: normal;">3.0 
 (7.0 SP2)</span></td>
<td colspan="1" rowspan="1" width="502px" class="whs10">
<p class=Table>Version number change only. No RTL code change.</td></tr>

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<p class="whs11">1.0</td>
<td colspan="1" rowspan="1" width="502px" class="whs10">
<p class=Table>Initial release.</td></tr>
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&nbsp; 

<h2>Dialog Box Parameters</h2>

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<p class=Table
	style="font-weight: bold;">Property</td>
<td bgcolor="#DEE8F4" width="502px" class="whs16">
<p class=Table
	style="font-weight: bold;">Description</td></tr>

<tr valign="top" class="whs14">
<td colspan="1" rowspan="1" width="86px" class="whs17">
<p class=Table>Instance Name</td>
<td colspan="1" rowspan="1" width="502px" class="whs18">
<p class=Table>Specifies the name of the timer instance. Alphanumeric values 
 and underscores are supported. The default is timer.</td></tr>

<tr valign="top" class="whs14">
<td width="86px" class="whs17">
<p class=Table>Base Address</td>
<td width="502px" class="whs18">
<p class=Table>Specifies the base address for configuring the timer device. 
 The minimum boundary alignment is 0X80. Supported &nbsp;values 
 are 0X00000000 to 0XFFFFFFFF. The default is 0X00000000.</td></tr>

<tr valign="top" class="whs14">
<td colspan="1" rowspan="1" width="86px" class="whs17">
<p class=Table>Writeable Tick Count</td>
<td colspan="1" rowspan="1" width="502px" class="whs18">
<p class=Table>Determines whether the period register is writable. A tick 
 is equivalent to one clock cycle. This option is selected by default.</td></tr>

<tr valign="top" class="whs14">
<td colspan="1" rowspan="1" width="86px" class="whs17">
<p class=Table>Readable Tick Count</td>
<td colspan="1" rowspan="1" width="502px" class="whs18">
<p class=Table>Determines whether the snapshot register is readable. This 
 option is selected by default.</td></tr>

<tr valign="top" class="whs14">
<td colspan="1" rowspan="1" width="86px" class="whs17">
<p class=Table>Start Stop Control</td>
<td colspan="1" rowspan="1" width="502px" class="whs18">
<p class=Table>Determines whether the START and STOP bits are controllable. 
 This option is selected by default.</td></tr>

<tr valign="top" class="whs14">
<td colspan="1" rowspan="1" width="86px" class="whs19">
<p class=Table>Default Reload Ticks</td>
<td colspan="1" rowspan="1" width="502px" class="whs20">
<p class=Table>Specifies the initial countdown value. The period number 
 is the reload value used to initialize the counter. The value should be 
 in the range that can be represented by the period width. Supported values 
 are 0X00000000 to 0XFFFFFFFF. The default is 20 (0X14).</td></tr>

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<td colspan="1" rowspan="1" width="86px" class="whs17">
<p class=Table>Counter Width</td>
<td colspan="1" rowspan="1" width="502px" class="whs18">
<p class=Table>Controls the period register and internal counter's width. 
 The period width is the width of the adder-subtractor used to implement 
 the counter. Supported values are 1 to 31. The default is 32.</td></tr>
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&nbsp; 

<p><span style="font-weight: bold;"><B>Note</B></span>: If the data sheet fails 
 to open, click <img src="qm_icon.jpg" x-maintain-ratio="TRUE" width="14px" height="16px" border="0" class="img_whs21"> on the Available Components toolbar, and 
 then click the note button.</p>

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