P-SeriesのトピックRe: COP/JTAG

COP/JTAG

tomaszkrupski — Wed, 23 Jul 2014 16:03:36 GMT

Hi!

Is it possible to use a COP connector (J29 in the P1010RDB) for the boundary scan test?

In my design a JTAG chain consist of a CPLD, P1010, and FPGA.

Will a debugging of P1010 through COP still work, even when the P1010 is in the middle of a JTAG chain?

Re: COP/JTAG

lunminliang — Thu, 24 Jul 2014 01:46:33 GMT

I thinks yes, what's your problem?

See Section 8.3 Using JTAG Configuration File to Specify Multiple Linked Devices on a JTAG Chain, in Targeting_PA_Processors.pdf, the document is located in the CW installation C:\Freescale\CW_PA_v10.3.3\PA\Help\PDF.

Re: COP/JTAG

yipingwang — Fri, 25 Jul 2014 08:28:57 GMT

Hello Tomasz,

It is possible to debug P1010 in the JTAG chain.

First please make sure TDI and TDO of the JTAG header and all the devices in the chain are connected.

If you use CodeWarrior, you need to define JTAG configuration file for the scan chain.

The CodeWarrior debugger supports targets with non-Freescale devices on the scan

chain. Each non-Freescale device is declared as "generic" and needs three parameters:

JTAG Instruction Length; Bypass Command; and Bypass Length. The values for these

three parameters are available in the device's data sheet or from its manufacturer.

For example, the JTAG Configuration File for this scan chain could be as the following.

Generic 4 1 0xF

P1010

Generic 5 1 0x1F

Have a great day,
Yiping

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