If the external CPLD chip can use the XCLKOUT output clock from TMS320F28377S

Hardy Zhou

Intellectual 1650 points

Other Parts Discussed in Thread: TMS320F28377S

Pls help check if the external CPLD chip can use the XCLKOUT output clock(150MHz) from TMS320F28377S.

Thanks.

over 8 years ago

0 Devin Cottier over 8 years ago

TI__Guru 60865 points

Hi Hardy,

The I/Os can not drive a signal that fast:

Does the CPLD have a PLL? In that case maybe you can use a single-ended clock source of 10-20MHz and send it to the PLL input of both the F2837x device and the CPLD?

0 Hardy Zhou over 8 years ago in reply to Devin Cottier

TI__Intellectual 1650 points

Thanks for your suggestion

C2000™︎ microcontrollers

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If the external CPLD chip can use the XCLKOUT output clock from TMS320F28377S