Nios Development board - Clock

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originally posted by john007@Nov 5 2005, 10:20 PM

i have a question regarding the "sma connector j4" available on the

nios development board, stratix edition. can we use it only for a generic

input signal? if yes, how can i set an input in the bdf file to read its value, i mean what is the pin name? i have an idea how to get the clock so this is not an issue.

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You place an input pin in your bdf schematics. Names it as you prefer, assigns it to the pin with the same pin number as the pin connecting to J4. This should give you a generic inpuut from J4. If there already is an input assigned to that pin, it should be suppressed of course. You can only have one pin to an input.

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originally posted by john007@Nov 5 2005, 10:20 PM

note to figure 1-21:

(1) an external clock can be enabled by stuffing location r15 with a

49.9 ohm 0603 resistor and stuffing location r13 with a 330 ohm 0603

resistor.

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Without having looked at the details, stuffing is here meant to mean solder a resistor. 0603 is the package size of a surface mounted resistor fitting the solder pads on the board.

henning