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Altera_Forum
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11 years ago

Outputting a bitstream onto a pin in verilog

I need to output a 32bit bit-stream onto a pin in verilog. I know verilog has the streaming operators pack and unpack but I do not believe they will do what I want it to do. I have 32x512 FIFO ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

If I correctly understand your request, you need to implement a shift-register to serialize (=stream) out of Q-I pins.

This is roughly what you have to do:

- define a 5 bit counter which continuosly counts from 0 to 31 again and again

- at count=0 latch 32bit FIFO data into a register

- for each count up to 31 (included count=0) put data[0] onto output pin and shift the register ( data <= data >> 1 ) and again