On the target board, please ensue HRESET not tied to TRST, HRESET to the processor exclusive to COP/JTAG header. Problems arise when the core is reset and the debugger doesn't know about it, usually the debugger will report the processor cannot be put into STOP mode.
Please refer to page 5 in the attached PPT about JTAG interface design.
HRESET connect to the jtag（pin 13） directly，with a 1KΩ pull up resistor。
COP/JTAG‘s TRST（pin 4）use a or gate with the poreset to the CPU’TRST，and the COP/JTAG‘s TRST pull up with a 4.7K resistor。
It fits the page 5 of the PPT。
This essentially indicates that BDI issues a freeze command but the processor does not come to stopped state. It is probably because your board does not boot. You can disconnect the BDI and check with logic analyzer or oscilloscope to see if the processor tries to fetch the boot vector.
thank you for your response。
The boot file can't program into the Flash now，I don't kown where can I fetch the boot vector without BDI。
I can get the ddrclk（MEMC_MCK/MEMC_MCK# ） when the BDI connected ，so it seems the PLL work up，the boot is running。But when the HRESET comes to high，the uart1 put nothing out。I have also measured the power supply、the power-on-reset sequence，they fit the specification of mpc8313。
so can you give some suggest ？
Hi Johnny, please e-mail me your config file and I will take a look. Also I think you are doing RCW overwrite in your config via BDI. As Yipping suggests below, you need also make sure the RCW you are providing is valid and reflects your design. Send me your BDI config file directly as well information about your board as much as you can and I will take a look.
I'v send the config file.The board works with 33Mhz of sysclk，two piece of MT47H64M16NF DDR2 SDRAM.More infomations as below:
Coherent System Bus: 166 MHz
Core: 333 MHz
Local Bus Controller: 166 MHz
Local Bus: 41 MHz
DDR: 333 MHz
SEC: 55 MHz
I2C1: 166 MHz
I2C2: 166 MHz
TSEC1: 166 MHz
TSEC2: 166 MHz
USB MPH: 0 MHz
USB DR: 55 MHz
CPU: MPC8313E, Rev: 21 at 333.333 MHz
INFO: Initializing IOMEM for regset 0
INFO: reset phy for M88E1322 card
DRAM: 256 MB
NAND: 256 MB
Using default environment