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8168 ddr3

你好:

   我现在把8168 evm上的内存改为了2G。在串口终端上什么也打印不出。用CCS运行的话。打印出

CortexA8: Error connecting to the target: (Error -2062 @ 0x1FE) Unable to halt device. Reset the device, and retry the operation. If error persists, confirm configuration, power-cycle the board, and/or try more reliable JTAG settings (e.g. lower TCLK). (Emulation package 5.1.232.0)CortexA8: Error: (Error -2062 @ 0x1FE) Unable to halt device. Reset the device, and retry the operation. If error persists, confirm configuration, power-cycle the board, and/or try more reliable JTAG settings (e.g. lower TCLK). (Emulation package 5.1.232.0)CortexA8: GEL Output:Connecting Target…
CortexA8: Trouble Writing Memory Block at 0x481815c4 on Page 0 of Length 0x4: (Error -2130 @ 0x481815C4) Unable to access device memory. Verify that the memory address is in valid memory. If error persists, confirm configuration, power-cycle board, and/or try more reliable JTAG settings (e.g. lower TCLK). (Emulation package 5.1.232.0)CortexA8: GEL: Error while executing OnTargetConnect(): Target failed to write 0x481815C4 at *((unsigned int *) 0x481815C4)=(unsigned int) 0x2 [TI816x_evm_A8_ddr3.gel:208] at DDR3_796MHZ_doall() [TI816x_evm_A8_ddr3.gel:661] at doall() [TI816x_evm_A8_ddr3.gel:390] at HDVPSSInit() [TI816x_evm_A8_ddr3.gel:380] at OnTargetConnect() .
CortexA8: Trouble Writing Memory Block at 0x40300000 on Page 0 of Length 0x47f4: (Error -1204 @ 0x3D5B) Unable to access the DAP. Reset the device, and retry the operation. If error persists, confirm configuration, power-cycle the board, and/or try more reliable JTAG settings (e.g. lower TCLK). (Emulation package 5.1.232.0)CortexA8: Unable to terminate memory download: NULL buffer pointer at 0x3a9f
CortexA8: GEL: File: F:\DSP_exe\CpuTimer0_RAM\CpuTimer0_LED\Debug\CpuTimer0_LED.out: Load failed.

我用的内存型号是4BE77 D9PZQ.

请问这个在GEL文件当中该如何设置这个内存型号的时序,谢谢!

bing zhang6:

是镁光的内存

bing zhang6:

回复 bing zhang6:

1600频率

Eason Wang:

首先你需要根据DDR手册上的值填入excel去获取几个DDR timing寄存器的值填入gel文件。。。

bing zhang6:

回复 Eason Wang:

你好:

    这个DM816x_C6A816x_AM389x_EMIF4_Register_Settings怎么使用。是DRAM这个SHILFT里的东西全部都需填写完后,在EMIF4这个SHILFT里看结果还是怎么用。计算出值以后再gel文件需要修改那几个值。谢谢!

Louis:

回复 bing zhang6:

你好,

  DM816x_C6A816x_AM389x_EMIF4_Register_Settings表格的数据是用来配置DDR的控制器以及Timing的,一般依此来修改GEL,再运行.out 计算leveling的值后回填至UBOOT。

bing zhang6:

回复 Louis:

你好: 我就是不知道先填那张表格,是先填DMRAM里的吗?是白色的部分都需要填吗?填完了以后是不是就直接在EMIF4里计算出值了。是否有相关的文档? 谢谢!

Louis:

回复 bing zhang6:

你好,

  需要根据DDR颗粒的手册,将DRAR里面的数据填写完毕,再根据具体的DDR工作频率及EMIF的位宽,配置EMIF寄存器值,如CL,CWL等。具体的配置过程在DRAM表中有注明。

bing zhang6:

回复 Louis:

你好:

   我现在已经计算出了这些值,如附件。下一步该如何做谢谢。

bing zhang6:

回复 Louis:

你好:

   我现在已经填写DRAM如附件,接下来该如何做。

bing zhang6:

回复 bing zhang6:

你好;

   这个是EMIF的值。谢谢

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