TMS320C6748: CPU初始化为456MHz时，DDR初始化失败

bai bai

Part Number: TMS320C6748

自己的板子，接线参考的是TI的C6748_LCDK

使用的gel文件是"C:\ti\C6748_StarterWare_1_20_04_01\tools\gel\C6748_LCDK.gel"

CPU初始化为456MHz时，DDR初始化失败，信息如下：

C674X_0: Output: Target Connected.
C674X_0: Output: ---------------------------------------------
C674X_0: Output: Memory Map Cleared.
C674X_0: Output: ---------------------------------------------
C674X_0: Output: Memory Map Setup Complete.
C674X_0: Output: ---------------------------------------------
C674X_0: Output: PSC Enable Complete.
C674X_0: Output: ---------------------------------------------
C674X_0: Output: PLL0 init done for Core:300MHz, EMIFA:25MHz
C674X_0: Output: DDR initialization is in progress....
C674X_0: Output: PLL1 init done for DDR:150MHz
C674X_0: Output: Using DDR2 settings
C674X_0: Output: DDR2 init for 150 MHz is done
C674X_0: Output: ---------------------------------------------
C674X_0: Output: PLL0 init done for Core:456MHz, EMIFA:38MHz
C674X_0: Output: DDR initialization is in progress....
C674X_0: Trouble Reading Memory Block at 0x1c14188 on Page 0 of Length 0x4: (Error -1060 @ 0x1C14188) Device is not responding to the request. 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 9.6.0.00172)
Core_456MHz_mDDR_150MHz() cannot be evaluated.
Target failed to read 0x01C14188
at (*((unsigned int*) (0x01C14000+0x188))&=~(0x00000020)) [C6748_LCDK.gel:228]
at device_PLL1(24, 1, 0, 1, 2) [C6748_LCDK.gel:406]
at Set_DDRPLL_150MHz() [C6748_LCDK.gel:424]
at Set_DDR2_150MHz() [C6748_LCDK.gel:453]
at Core_456MHz_mDDR_150MHz()C674X_0: Trouble Reading Register CSR: (Error -1060 @ 0x41) Device is not responding to the request. 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 9.6.0.00172)
C674X_0: Trouble Reading Register CSR: (Error -1060 @ 0x41) Device is not responding to the request. 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 9.6.0.00172)C674X_0: Output: Target Connected.
................
C674X_0: Trouble Reading Memory Block at 0x712108 on Page 0 of Length 0xd4: (Error -1060 @ 0x712108) Device is not responding to the request. 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 9.6.0.00172)