ALSTOM SDK-C0147 12004-101-00 SBS04M17C模块卡件
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中文资料：
在ALSTOM SDK-C0147 12004-101-00 SBS04M17C完全运行之前，大多数DRAM设备需要一定数量的访问周期通常情况下，板载刷新电路和正常DRAM安装可以满足这一要求。然而，软件应确保对RAM的每个存储体执行至少10个初始化周期。ALSTOM SDK-C0147 12004-101-00 SBS04M17C有关详细编程信息，请参阅《单板计算机程序员参考指南》中的MEMC040或MCECC。
DRAM编程注意事项❏ DRAM映射解码器可以被编程以适应不同的基本地址和夹层板的尺寸。❏ 板载DRAM被本地总线重置禁用，ALSTOM SDK-C0147 12004-101-00 SBS04M17C并且必须在访问DRAM之前进行编程。❏ 在DRAM完全可操作之前，大多数DRAM设备需要一定数量的访问周期。ALSTOM SDK-C0147 12004-101-00 SBS04M17C
通常情况下，板载刷新电路和正常DRAM安装可以满足这一要求。然而，软件应确保每个RAM组至少执行10个初始化周期ALSTOM SDK-C0147 12004-101-00 SBS04M17C
英文资料：
Most DRAM devices require some number of access cycles before the DRAMs are fully operational. – Normally this requirement is met by the onboard refresh circuitry and normal DRAM installation. However, software should insure a minimum of 10 initialization cycles are performed to each bank of RAM. Refer to the MEMC040 or the MCECC in the Single Board Computers Programmer's Reference Guide for detailed programming information.ALSTOM SDK-C0147 12004-101-00 SBS04M17C
DRAM Programming Considerations ❏ The DRAM map decoder can be programmed to accommodate different base address(es) and sizes of mezzanine boards. ALSTOM SDK-C0147 12004-101-00 SBS04M17COnboard DRAM is disabled by a local bus reset and must be programmed before the DRAM can be accessed. ❏ Most DRAM devices require some number of access cycles before the DRAMs are fully operational.ALSTOM SDK-C0147 12004-101-00 SBS04M17C
Normally this requirement is met by the onboard refresh circuitry and normal DRAM installation. However, software should insure a minimum of 10 initialization cycles are performed to each bank of RAMALSTOM SDK-C0147 12004-101-00 SBS04M17C
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