F28377d 外扩 RAM

一般是通过EMIF来外扩RAM的，对此您可以查看TRM的2705页

Chapter 25 External Memory Interface (EMIF)

www.ti.com/.../spruhm8i.pdf

以及相关的设计文档和使用指南

也给出了相关的示例使用说明，如

In the following example, a 512K×16 SDRAM is located connected to EMIF1 chip select zone 0 (EMIF1_CS0n). This gives it a starting address of 0x80000000.

/********************************************************************
* MyFile.cmd - linker command file
********************************************************************/
MEMORY
{
PAGE 1: /* Data Memory */
SDRAM : origin = 0x80000000, length = 0x00080000 /* 512Kx16 SDRAM */
}
SECTIONS
{
.farbss: > SDRAM, PAGE = 1
}

您可以先参考一下

www.ti.com/.../spraby4.pdf

（Accessing External SDRAM on the TMS320F2837x/2807x Microcontrollers Using C/C++）

www.ti.com/.../sprac96a.pdf

Design and Usage Guidelines for the C2000™ External Memory Interface (EMIF)