Honored ContributorHi ,
When I add a component to my system using SOPC Builder , I am not sure of what values I should enter for Avalon Timing (Setup , Read Wait , Write Wait , Hold , Read latency). How can I determine the exact values for these parameters ? Thank you, Quan
Honored Contributorhello quan1328
first it depends if it's an external component. if yes, then you must have a look into the datasheet and timing for this component. if it is an internal component, then you determine the timing with your vhdl or verilog code. for internal components, i use the waitrequest avalon signal to handle the timing. then you don't have to enter the avalon timing values. e.g. reading a register from an internal component requires e.g. 1 clock cycle, while reading from a fifo or other ram component normally needs 2 or 3 clock cycles. see 3.2.2 Slave Read Transfer, Wait states http://altera.com/literature/manual/mnl_avalon_spec.pdf (http://altera.com/literature/manual/mnl_avalon_spec.pdf)Honored Contributor
first it depends if it's an external component.
if yes, then you must have a look into the datasheet and timing
for this component.
if it is an internal component, then you determine the timing with your
vhdl or verilog code.
for internal components, i use the waitrequest avalon signal to handle
the timing. then you don't have to enter the avalon timing values.
e.g. reading a register from an internal component requires e.g. 1 clock cycle,
while reading from a fifo or other ram component normally needs 2 or 3
clock cycles.
see 3.2.2 slave read transfer, wait states
http://altera.com/literature/manual/mnl_avalon_spec.pdf (http://altera.com/literature/manual/mnl_avalon_spec.pdf)
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--- Quote End --- Hi Fischer, I am reading the pdf you suggested . Thank you very much, Quan
