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Boundary Scan questions

hi,

I am new to Boundary scan. I am looking at some IO IP and the vendor has input ports called CLOCKDR, UPDATEDR, SHIFTDR, MODE, and MODE1

I do not know what CLOCKDR, MODE and MODE1 are used for. I also don't know where the signals come from in terms of the TAP controller. Is CLOCKDR a logical AND of JTAG _TCK and SHIFTDR state?

Any help will be greatly appreciated.

huzaifa

Reply to
huzaifa.ginwalla
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hi,

I am new to Boundary scan. I am looking at some IO IP and the vendor has input ports called CLOCKDR, UPDATEDR, SHIFTDR, MODE, and MODE1

I do not know what CLOCKDR, MODE and MODE1 are used for. I also don't know where the signals come from in terms of the TAP controller. Is CLOCKDR a logical AND of JTAG _TCK and SHIFTDR state?

Any help will be greatly appreciated.

huzaifa

Reply to
huzaifa.ginwalla

You have a lot of reading to do...

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Peter

Reply to
Peter

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