📄 at91sam9260_sdramc.html
字号:
<html><head>
<meta charset="iso-8859-1" content="Arm / ATMEL/ AT91 library / AT91SAM9260" http-equiv="Content-Type">
<title>Hardware API Selector: AT91SAM9260 Definitions</title>
</head>
<h1>SDRAM Controller Interface Peripheral</h1>
<null><a name="SDRAMC"></a><b>SDRAMC</b> <i><font size="-1">(<a href="AT91SAM9260_h.html#AT91S_SDRAMC">AT91S_SDRAMC</a>)</font></i><b> 0xFFFFEA00 </b><i><font size="-1">(<a href="AT91SAM9260_h.html#AT91C_BASE_SDRAMC">AT91C_BASE_SDRAMC</a>)</font></i>
<table border=1 cellpadding=3 cellspacing=0><null><th bgcolor="#FFFFCC"><font size="-1">Periph ID <a href="#AIC">AIC</a></font></th><th bgcolor="#FFFFCC"><font size="-1">Symbol</font></th><th bgcolor="#FFFFCC"><font size="-1">Description</font></th><tr><td bgcolor="#FFFFCC"><font size="-1"><b>1</b> </font></td><td><font size="-1"><i><font size="-1">(<a href="AT91SAM9260_h.html#AT91C_ID_SYS">AT91C_ID_SYS</a>)</font></i></font></td><td><font size="-1">System Controller</font></td></tr>
</null></table><br><table border=1 cellpadding=0 cellspacing=0 width="100%"><null><th bgcolor="#FFFFCC"><font size="-1"><b>Function</b></font></th><th bgcolor="#FFFFCC"><font size="-1"><b>Description</b></font></th><tr><td bgcolor="#FFFFCC"><font size="-1"><b><a href="lib_AT91SAM9260_h.html#AT91F_SDRAMC_CfgPMC">AT91F_SDRAMC_CfgPMC</a></b></font></td><td><font size="-1">Enable Peripheral clock in PMC for SDRAMC</font></td></tr>
</null></table><br><br></null><a name="SDRAMC"></a><h2>SDRAMC Software API <i><font size="-1">(<a href="AT91SAM9260_h.html#AT91S_SDRAMC">AT91S_SDRAMC</a>)</font></i></h2>
<a name="SDRAMC"></a><null><table border=1 cellpadding=0 cellspacing=0 width="100%"><null><th bgcolor="#FFFFCC"><font size="-1"><b>Offset</b></font></th><th bgcolor="#FFFFCC"><font size="-1"><b>Field</b></font></th><th bgcolor="#FFFFCC"><font size="-1"><b>Description</b></font></th>
<tr><td align="CENTER" bgcolor="#FFFFCC"><font size="-1"><b>0x0</b></font></td><td><font size="-1"><a href="AT91SAM9260_SDRAMC.html#SDRAMC_MR">SDRAMC_MR</a></font></td><td><font size="-1">SDRAM Controller Mode Register</font></td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC"><font size="-1"><b>0x4</b></font></td><td><font size="-1"><a href="AT91SAM9260_SDRAMC.html#SDRAMC_TR">SDRAMC_TR</a></font></td><td><font size="-1">SDRAM Controller Refresh Timer Register</font></td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC"><font size="-1"><b>0x8</b></font></td><td><font size="-1"><a href="AT91SAM9260_SDRAMC.html#SDRAMC_CR">SDRAMC_CR</a></font></td><td><font size="-1">SDRAM Controller Configuration Register</font></td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC"><font size="-1"><b>0xC</b></font></td><td><font size="-1"><a href="AT91SAM9260_SDRAMC.html#SDRAMC_HSR">SDRAMC_HSR</a></font></td><td><font size="-1">SDRAM Controller High Speed Register</font></td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC"><font size="-1"><b>0x10</b></font></td><td><font size="-1"><a href="AT91SAM9260_SDRAMC.html#SDRAMC_LPR">SDRAMC_LPR</a></font></td><td><font size="-1">SDRAM Controller Low Power Register</font></td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC"><font size="-1"><b>0x14</b></font></td><td><font size="-1"><a href="AT91SAM9260_SDRAMC.html#SDRAMC_IER">SDRAMC_IER</a></font></td><td><font size="-1">SDRAM Controller Interrupt Enable Register</font></td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC"><font size="-1"><b>0x18</b></font></td><td><font size="-1"><a href="AT91SAM9260_SDRAMC.html#SDRAMC_IDR">SDRAMC_IDR</a></font></td><td><font size="-1">SDRAM Controller Interrupt Disable Register</font></td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC"><font size="-1"><b>0x1C</b></font></td><td><font size="-1"><a href="AT91SAM9260_SDRAMC.html#SDRAMC_IMR">SDRAMC_IMR</a></font></td><td><font size="-1">SDRAM Controller Interrupt Mask Register</font></td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC"><font size="-1"><b>0x20</b></font></td><td><font size="-1"><a href="AT91SAM9260_SDRAMC.html#SDRAMC_ISR">SDRAMC_ISR</a></font></td><td><font size="-1">SDRAM Controller Interrupt Mask Register</font></td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC"><font size="-1"><b>0x24</b></font></td><td><font size="-1"><a href="AT91SAM9260_SDRAMC.html#SDRAMC_MDR">SDRAMC_MDR</a></font></td><td><font size="-1">SDRAM Memory Device Register</font></td></tr>
</null></table><br></null><h2>SDRAMC Register Description</h2>
<null><a name="SDRAMC_MR"></a><h4><a href="#SDRAMC">SDRAMC</a>: <i><a href="AT91SAM9260_h.html#AT91_REG">AT91_REG</a></i> SDRAMC_MR <i>SDRAM Controller Mode Register</i></h4><ul><null><font size="-2"><li><b>SDRAMC</b> <i><a href="AT91SAM9260_h.html#AT91C_SDRAMC_MR">AT91C_SDRAMC_MR</a></i> 0xFFFFEA00</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">3..0</td><td align="CENTER"><a name="SDRAMC_MODE"></a><b>SDRAMC_MODE</b><font size="-2"><br><a href="AT91SAM9260_h.html#AT91C_SDRAMC_MODE">AT91C_SDRAMC_MODE</a></font></td><td><b>Mode</b><br>0: Normal Mode 1:Issue a NOP Command 2:Issue a All Banks Precharge Command 3:Issue a Load Mode Register 4:Issue a Refresh<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="SDRAMC_MODE_NORMAL_CMD"></a><b>SDRAMC_MODE_NORMAL_CMD</b><font size="-1"><br><a href="AT91SAM9260_h.html#AT91C_SDRAMC_MODE_NORMAL_CMD">AT91C_SDRAMC_MODE_NORMAL_CMD</a></font></td><td><br>Normal Mode</td></tr>
<tr><td align="CENTER">1</td><td align="CENTER"><a name="SDRAMC_MODE_NOP_CMD"></a><b>SDRAMC_MODE_NOP_CMD</b><font size="-1"><br><a href="AT91SAM9260_h.html#AT91C_SDRAMC_MODE_NOP_CMD">AT91C_SDRAMC_MODE_NOP_CMD</a></font></td><td><br>Issue a NOP Command at every access</td></tr>
<tr><td align="CENTER">2</td><td align="CENTER"><a name="SDRAMC_MODE_PRCGALL_CMD"></a><b>SDRAMC_MODE_PRCGALL_CMD</b><font size="-1"><br><a href="AT91SAM9260_h.html#AT91C_SDRAMC_MODE_PRCGALL_CMD">AT91C_SDRAMC_MODE_PRCGALL_CMD</a></font></td><td><br>Issue a All Banks Precharge Command at every access</td></tr>
<tr><td align="CENTER">3</td><td align="CENTER"><a name="SDRAMC_MODE_LMR_CMD"></a><b>SDRAMC_MODE_LMR_CMD</b><font size="-1"><br><a href="AT91SAM9260_h.html#AT91C_SDRAMC_MODE_LMR_CMD">AT91C_SDRAMC_MODE_LMR_CMD</a></font></td><td><br>Issue a Load Mode Register at every access</td></tr>
<tr><td align="CENTER">4</td><td align="CENTER"><a name="SDRAMC_MODE_RFSH_CMD"></a><b>SDRAMC_MODE_RFSH_CMD</b><font size="-1"><br><a href="AT91SAM9260_h.html#AT91C_SDRAMC_MODE_RFSH_CMD">AT91C_SDRAMC_MODE_RFSH_CMD</a></font></td><td><br>Issue a Refresh</td></tr>
<tr><td align="CENTER">5</td><td align="CENTER"><a name="SDRAMC_MODE_EXT_LMR_CMD"></a><b>SDRAMC_MODE_EXT_LMR_CMD</b><font size="-1"><br><a href="AT91SAM9260_h.html#AT91C_SDRAMC_MODE_EXT_LMR_CMD">AT91C_SDRAMC_MODE_EXT_LMR_CMD</a></font></td><td><br>Issue an Extended Load Mode Register</td></tr>
<tr><td align="CENTER">6</td><td align="CENTER"><a name="SDRAMC_MODE_DEEP_CMD"></a><b>SDRAMC_MODE_DEEP_CMD</b><font size="-1"><br><a href="AT91SAM9260_h.html#AT91C_SDRAMC_MODE_DEEP_CMD">AT91C_SDRAMC_MODE_DEEP_CMD</a></font></td><td><br>Enter Deep Power Mode</td></tr>
</null></table></font>
</td></tr>
</null></table>
<a name="SDRAMC_TR"></a><h4><a href="#SDRAMC">SDRAMC</a>: <i><a href="AT91SAM9260_h.html#AT91_REG">AT91_REG</a></i> SDRAMC_TR <i>SDRAM Controller Refresh Timer Register</i></h4><ul><null><font size="-2"><li><b>SDRAMC</b> <i><a href="AT91SAM9260_h.html#AT91C_SDRAMC_TR">AT91C_SDRAMC_TR</a></i> 0xFFFFEA04</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">11..0</td><td align="CENTER"><a name="SDRAMC_COUNT"></a><b>SDRAMC_COUNT</b><font size="-2"><br><a href="AT91SAM9260_h.html#AT91C_SDRAMC_COUNT">AT91C_SDRAMC_COUNT</a></font></td><td><b>Refresh Counter</b></td></tr>
</null></table>
<a name="SDRAMC_CR"></a><h4><a href="#SDRAMC">SDRAMC</a>: <i><a href="AT91SAM9260_h.html#AT91_REG">AT91_REG</a></i> SDRAMC_CR <i>SDRAM Controller Configuration Register</i></h4><ul><null><font size="-2"><li><b>SDRAMC</b> <i><a href="AT91SAM9260_h.html#AT91C_SDRAMC_CR">AT91C_SDRAMC_CR</a></i> 0xFFFFEA08</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">1..0</td><td align="CENTER"><a name="SDRAMC_NC"></a><b>SDRAMC_NC</b><font size="-2"><br><a href="AT91SAM9260_h.html#AT91C_SDRAMC_NC">AT91C_SDRAMC_NC</a></font></td><td><b>Number of Column Bits</b><br>0: 8.<br>1: 9.<br>3: 10.<br>3: 11.<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="SDRAMC_NC_8"></a><b>SDRAMC_NC_8</b><font size="-1"><br><a href="AT91SAM9260_h.html#AT91C_SDRAMC_NC_8">AT91C_SDRAMC_NC_8</a></font></td><td><br>8 Bits</td></tr>
<tr><td align="CENTER">1</td><td align="CENTER"><a name="SDRAMC_NC_9"></a><b>SDRAMC_NC_9</b><font size="-1"><br><a href="AT91SAM9260_h.html#AT91C_SDRAMC_NC_9">AT91C_SDRAMC_NC_9</a></font></td><td><br>9 Bits</td></tr>
<tr><td align="CENTER">2</td><td align="CENTER"><a name="SDRAMC_NC_10"></a><b>SDRAMC_NC_10</b><font size="-1"><br><a href="AT91SAM9260_h.html#AT91C_SDRAMC_NC_10">AT91C_SDRAMC_NC_10</a></font></td><td><br>10 Bits</td></tr>
<tr><td align="CENTER">3</td><td align="CENTER"><a name="SDRAMC_NC_11"></a><b>SDRAMC_NC_11</b><font size="-1"><br><a href="AT91SAM9260_h.html#AT91C_SDRAMC_NC_11">AT91C_SDRAMC_NC_11</a></font></td><td><br>11 Bits</td></tr>
</null></table></font>
</td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC">3..2</td><td align="CENTER"><a name="SDRAMC_NR"></a><b>SDRAMC_NR</b><font size="-2"><br><a href="AT91SAM9260_h.html#AT91C_SDRAMC_NR">AT91C_SDRAMC_NR</a></font></td><td><b>Number of Row Bits</b><br>0: 11.<br>1: 12.<br>3: 13.<br>3: Reserved.<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="SDRAMC_NR_11"></a><b>SDRAMC_NR_11</b><font size="-1"><br><a href="AT91SAM9260_h.html#AT91C_SDRAMC_NR_11">AT91C_SDRAMC_NR_11</a></font></td><td><br>11 Bits</td></tr>
<tr><td align="CENTER">1</td><td align="CENTER"><a name="SDRAMC_NR_12"></a><b>SDRAMC_NR_12</b><font size="-1"><br><a href="AT91SAM9260_h.html#AT91C_SDRAMC_NR_12">AT91C_SDRAMC_NR_12</a></font></td><td><br>12 Bits</td></tr>
<tr><td align="CENTER">2</td><td align="CENTER"><a name="SDRAMC_NR_13"></a><b>SDRAMC_NR_13</b><font size="-1"><br><a href="AT91SAM9260_h.html#AT91C_SDRAMC_NR_13">AT91C_SDRAMC_NR_13</a></font></td><td><br>13 Bits</td></tr>
</null></table></font>
</td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC">4</td><td align="CENTER"><a name="SDRAMC_NB"></a><b>SDRAMC_NB</b><font size="-2"><br><a href="AT91SAM9260_h.html#AT91C_SDRAMC_NB">AT91C_SDRAMC_NB</a></font></td><td><b>Number of Banks</b><br>0: 2.<br>1: 4.<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="SDRAMC_NB_2_BANKS"></a><b>SDRAMC_NB_2_BANKS</b><font size="-1"><br><a href="AT91SAM9260_h.html#AT91C_SDRAMC_NB_2_BANKS">AT91C_SDRAMC_NB_2_BANKS</a></font></td><td><br>2 banks</td></tr>
<tr><td align="CENTER">1</td><td align="CENTER"><a name="SDRAMC_NB_4_BANKS"></a><b>SDRAMC_NB_4_BANKS</b><font size="-1"><br><a href="AT91SAM9260_h.html#AT91C_SDRAMC_NB_4_BANKS">AT91C_SDRAMC_NB_4_BANKS</a></font></td><td><br>4 banks</td></tr>
</null></table></font>
</td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC">6..5</td><td align="CENTER"><a name="SDRAMC_CAS"></a><b>SDRAMC_CAS</b><font size="-2"><br><a href="AT91SAM9260_h.html#AT91C_SDRAMC_CAS">AT91C_SDRAMC_CAS</a></font></td><td><b>CAS Latency</b><br>0: Reserved.<br>1: Reserved.<br>2: 2.<br>3: 3.<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">2</td><td align="CENTER"><a name="SDRAMC_CAS_2"></a><b>SDRAMC_CAS_2</b><font size="-1"><br><a href="AT91SAM9260_h.html#AT91C_SDRAMC_CAS_2">AT91C_SDRAMC_CAS_2</a></font></td><td><br>2 cycles</td></tr>
<tr><td align="CENTER">3</td><td align="CENTER"><a name="SDRAMC_CAS_3"></a><b>SDRAMC_CAS_3</b><font size="-1"><br><a href="AT91SAM9260_h.html#AT91C_SDRAMC_CAS_3">AT91C_SDRAMC_CAS_3</a></font></td><td><br>3 cycles</td></tr>
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -