at91m55800a_ebi.html

AT91M5800a例子

<tr><td align="CENTER" bgcolor="#FFFFCC">8..7</td><td align="CENTER"><a name="EBI_PAGES"></a><b>EBI_PAGES</b><font size="-2"><br><a href="AT91M55800A_h.html#AT91C_EBI_PAGES">AT91C_EBI_PAGES</a></font></td><td><b>Pages Size</b><font size="-1"><table bgcolor="#E3F2FF" border=1 cellpadding=0 cellspacing=0 width="100%"><null><th><b>Value</b></th><th><b>Label</b></th><th><b>Description</b></th><tr><td align="CENTER">0</td><td align="CENTER"><a name="EBI_PAGES_1M"></a><b>EBI_PAGES_1M</b><font size="-1"><br><a href="AT91M55800A_h.html#AT91C_EBI_PAGES_1M">AT91C_EBI_PAGES_1M</a></font></td><td><br>1M Byte</td></tr>
<tr><td align="CENTER">1</td><td align="CENTER"><a name="EBI_PAGES_4M"></a><b>EBI_PAGES_4M</b><font size="-1"><br><a href="AT91M55800A_h.html#AT91C_EBI_PAGES_4M">AT91C_EBI_PAGES_4M</a></font></td><td><br>4M Byte</td></tr>
<tr><td align="CENTER">2</td><td align="CENTER"><a name="EBI_PAGES_16M"></a><b>EBI_PAGES_16M</b><font size="-1"><br><a href="AT91M55800A_h.html#AT91C_EBI_PAGES_16M">AT91C_EBI_PAGES_16M</a></font></td><td><br>16M Byte</td></tr>
<tr><td align="CENTER">3</td><td align="CENTER"><a name="EBI_PAGES_64M"></a><b>EBI_PAGES_64M</b><font size="-1"><br><a href="AT91M55800A_h.html#AT91C_EBI_PAGES_64M">AT91C_EBI_PAGES_64M</a></font></td><td><br>64M Byte</td></tr>
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<tr><td align="CENTER" bgcolor="#FFFFCC">11..9</td><td align="CENTER"><a name="EBI_TDF"></a><b>EBI_TDF</b><font size="-2"><br><a href="AT91M55800A_h.html#AT91C_EBI_TDF">AT91C_EBI_TDF</a></font></td><td><b>Data Float Output Time</b><br>Number of Cycles Added after the Transfert<font size="-1"><table bgcolor="#E3F2FF" border=1 cellpadding=0 cellspacing=0 width="100%"><null><th><b>Value</b></th><th><b>Label</b></th><th><b>Description</b></th><tr><td align="CENTER">0</td><td align="CENTER"><a name="EBI_TDF_0"></a><b>EBI_TDF_0</b><font size="-1"><br><a href="AT91M55800A_h.html#AT91C_EBI_TDF_0">AT91C_EBI_TDF_0</a></font></td><td><br>1 TDF</td></tr>
<tr><td align="CENTER">1</td><td align="CENTER"><a name="EBI_TDF_1"></a><b>EBI_TDF_1</b><font size="-1"><br><a href="AT91M55800A_h.html#AT91C_EBI_TDF_1">AT91C_EBI_TDF_1</a></font></td><td><br>2 TDF</td></tr>
<tr><td align="CENTER">2</td><td align="CENTER"><a name="EBI_TDF_2"></a><b>EBI_TDF_2</b><font size="-1"><br><a href="AT91M55800A_h.html#AT91C_EBI_TDF_2">AT91C_EBI_TDF_2</a></font></td><td><br>3 TDF</td></tr>
<tr><td align="CENTER">3</td><td align="CENTER"><a name="EBI_TDF_3"></a><b>EBI_TDF_3</b><font size="-1"><br><a href="AT91M55800A_h.html#AT91C_EBI_TDF_3">AT91C_EBI_TDF_3</a></font></td><td><br>4 TDF</td></tr>
<tr><td align="CENTER">4</td><td align="CENTER"><a name="EBI_TDF_4"></a><b>EBI_TDF_4</b><font size="-1"><br><a href="AT91M55800A_h.html#AT91C_EBI_TDF_4">AT91C_EBI_TDF_4</a></font></td><td><br>5 TDF</td></tr>
<tr><td align="CENTER">5</td><td align="CENTER"><a name="EBI_TDF_5"></a><b>EBI_TDF_5</b><font size="-1"><br><a href="AT91M55800A_h.html#AT91C_EBI_TDF_5">AT91C_EBI_TDF_5</a></font></td><td><br>6 TDF</td></tr>
<tr><td align="CENTER">6</td><td align="CENTER"><a name="EBI_TDF_6"></a><b>EBI_TDF_6</b><font size="-1"><br><a href="AT91M55800A_h.html#AT91C_EBI_TDF_6">AT91C_EBI_TDF_6</a></font></td><td><br>7 TDF</td></tr>
<tr><td align="CENTER">7</td><td align="CENTER"><a name="EBI_TDF_7"></a><b>EBI_TDF_7</b><font size="-1"><br><a href="AT91M55800A_h.html#AT91C_EBI_TDF_7">AT91C_EBI_TDF_7</a></font></td><td><br>8 TDF</td></tr>
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<tr><td align="CENTER" bgcolor="#FFFFCC">12</td><td align="CENTER"><a name="EBI_BAT"></a><b>EBI_BAT</b><font size="-2"><br><a href="AT91M55800A_h.html#AT91C_EBI_BAT">AT91C_EBI_BAT</a></font></td><td><b>Byte Access Type</b><br>0 = Byte-write access type. 1 = Byte-select access type.</td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC">13</td><td align="CENTER"><a name="EBI_CSEN"></a><b>EBI_CSEN</b><font size="-2"><br><a href="AT91M55800A_h.html#AT91C_EBI_CSEN">AT91C_EBI_CSEN</a></font></td><td><b>Chip Select Enable</b><br>0 = Chip select is disabled. 1 = Chip select is enable.</td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC">31..20</td><td align="CENTER"><a name="EBI_BA"></a><b>EBI_BA</b><font size="-2"><br><a href="AT91M55800A_h.html#AT91C_EBI_BA">AT91C_EBI_BA</a></font></td><td><b>Base Address</b><br>These bits contain the highest bits of the base address. If the page size is larger than 1M byte, the unused bits of the base address are ignored by the EBI decoder.</td></tr>
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<a name="EBI_RCR"></a><h4><a href="#EBI">EBI</a>: <i><a href="AT91M55800A_h.html#AT91_REG">AT91_REG</a></i> EBI_RCR  <i>Remap Control Register</i></h4><ul><null><font size="-2"><li><b>EBI</b> <i><a href="AT91M55800A_h.html#AT91C_EBI_RCR">AT91C_EBI_RCR</a></i> 0xFFE00020</font></null></ul><table border=1 cellpadding=0 cellspacing=0 width="100%"><null><th bgcolor="#FFFFCC"><b>Offset</b></th><th bgcolor="#FFFFCC"><b>Name</b></th><th bgcolor="#FFFFCC"><b>Description</b></th><tr><td align="CENTER" bgcolor="#FFFFCC">0</td><td align="CENTER"><a name="EBI_RCB"></a><b>EBI_RCB</b><font size="-2"><br><a href="AT91M55800A_h.html#AT91C_EBI_RCB">AT91C_EBI_RCB</a></font></td><td><b>0 = No effect. 1 = Cancels the remapping (performed at reset) of the page zero memory devices.</b></td></tr>
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<a name="EBI_MCR"></a><h4><a href="#EBI">EBI</a>: <i><a href="AT91M55800A_h.html#AT91_REG">AT91_REG</a></i> EBI_MCR  <i>Memory Control Register</i></h4><ul><null><font size="-2"><li><b>EBI</b> <i><a href="AT91M55800A_h.html#AT91C_EBI_MCR">AT91C_EBI_MCR</a></i> 0xFFE00024</font></null></ul><table border=1 cellpadding=0 cellspacing=0 width="100%"><null><th bgcolor="#FFFFCC"><b>Offset</b></th><th bgcolor="#FFFFCC"><b>Name</b></th><th bgcolor="#FFFFCC"><b>Description</b></th><tr><td align="CENTER" bgcolor="#FFFFCC">2..0</td><td align="CENTER"><a name="EBI_ALE"></a><b>EBI_ALE</b><font size="-2"><br><a href="AT91M55800A_h.html#AT91C_EBI_ALE">AT91C_EBI_ALE</a></font></td><td><b>Address Line Enable</b><br>This field determines the number of valid address lines and the number of valid chip select lines.<font size="-1"><table bgcolor="#E3F2FF" border=1 cellpadding=0 cellspacing=0 width="100%"><null><th><b>Value</b></th><th><b>Label</b></th><th><b>Description</b></th><tr><td align="CENTER">0</td><td align="CENTER"><a name="EBI_ALE_16M"></a><b>EBI_ALE_16M</b><font size="-1"><br><a href="AT91M55800A_h.html#AT91C_EBI_ALE_16M">AT91C_EBI_ALE_16M</a></font></td><td><br>Valid Address Bits = A20, A21, A22, A23  Max Addressable Space = 16M Bytes Valid Chip Select=None </td></tr>
<tr><td align="CENTER">4</td><td align="CENTER"><a name="EBI_ALE_8M"></a><b>EBI_ALE_8M</b><font size="-1"><br><a href="AT91M55800A_h.html#AT91C_EBI_ALE_8M">AT91C_EBI_ALE_8M</a></font></td><td><br>Valid Address Bits = A20, A21, A22  Max Addressable Space = 8M Bytes Valid Chip Select = CS4 </td></tr>
<tr><td align="CENTER">5</td><td align="CENTER"><a name="EBI_ALE_4M"></a><b>EBI_ALE_4M</b><font size="-1"><br><a href="AT91M55800A_h.html#AT91C_EBI_ALE_4M">AT91C_EBI_ALE_4M</a></font></td><td><br>Valid Address Bits = A20, A21  Max Addressable Space = 4M Bytes Valid Chip Select = CS4, CS5 </td></tr>
<tr><td align="CENTER">6</td><td align="CENTER"><a name="EBI_ALE_2M"></a><b>EBI_ALE_2M</b><font size="-1"><br><a href="AT91M55800A_h.html#AT91C_EBI_ALE_2M">AT91C_EBI_ALE_2M</a></font></td><td><br>Valid Address Bits = A20  Max Addressable Space = 2M Bytes Valid Chip Select = CS4, CS5, CS6 </td></tr>
<tr><td align="CENTER">7</td><td align="CENTER"><a name="EBI_ALE_1M"></a><b>EBI_ALE_1M</b><font size="-1"><br><a href="AT91M55800A_h.html#AT91C_EBI_ALE_1M">AT91C_EBI_ALE_1M</a></font></td><td><br>Valid Address Bits = None  Max Addressable Space = 1M Byte Valid Chip Select = CS4, CS5, CS6, CS7 </td></tr>
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<tr><td align="CENTER" bgcolor="#FFFFCC">4</td><td align="CENTER"><a name="EBI_DRP"></a><b>EBI_DRP</b><font size="-2"><br><a href="AT91M55800A_h.html#AT91C_EBI_DRP">AT91C_EBI_DRP</a></font></td><td><b></b><br>0 = Standard read protocol for all external memory devices enabled. 1 = Early read protocol for all external memory devices enabled</td></tr>
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