Dch70 jtag.

DCH 70 DCH3416
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usbbdm
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Dch70 jtag.

Post by usbbdm »

I hooked up the DCH70 but I can only get IDCODE and nothing else.
Somehow the TDI pin does not pickup my command. Has anyone tested on DCH70 box? I just want to know if my DCH70 is working properly on JTAG. If second person experience the same thing, then it must be by design not my box's problem.
UserName
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Post by UserName »

someone always knows something...
elkora
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Post by elkora »

DCH3416 on this I got.

Code: Select all

 IDCODE FFFFFFFF
 Manufacturer not found 7FF
any idea?
cavrac
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Post by cavrac »

Where are the JTAG pads on this box?

Thanks
usbbdm
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Post by usbbdm »

It is similar to DCT6412. You need to bend the end of the pin header to solder on.
zdavid408
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Joined: Sat Mar 07, 2009 9:40 pm

Post by zdavid408 »

usbbdm wrote:It is similar to DCT6412. You need to bend the end of the pin header to solder on.
I just got a DCH70, can anything be done to this. I can use for testing, let me know what i should do to it.
usbbdm
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Joined: Mon Jul 18, 2005 9:33 pm

Post by usbbdm »

No, DCH70 does not even have TDI implemented. (Disabled?)
zdavid408
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Post by zdavid408 »

usbbdm wrote:No, DCH70 does not even have TDI implemented. (Disabled?)
Can we implement from the DCT models?
usbbdm
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Post by usbbdm »

I reopened my DCH70 today and found there is a cut on the TDI. This could explain why I cannot get the JTAG working.

Can anybody has a DCT70 do the following test. Connect the type detect and post your result.
-detect
IDCODE 2711517F
Broadcom BCM7115
IMPCODE FFFFFFFE
EJTAG V3.1
DMA not supoorted

Here is mine and you can se IMPCODE is FFFFFFFE which is not right. If this confirms my DCH70 is defective then I will try to get another one to test.
jatucker
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Post by jatucker »

IDCODE 2711517F
Broadcom BCM7115
IMPCODE FFFFFFFE
EJTAG V3.1
DMA not supoorted
usbbdm
Junior Member
Posts: 8962
Joined: Mon Jul 18, 2005 9:33 pm

Post by usbbdm »

Thanks. This looks to me the TDI is not connected. Need to trace back to see which pin it is connected to on the CPU.
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