All avalon singnal sync to avalon bus clock

Altera_Forum · ‎04-26-2010

sorry for my noob question. im a bit new to avalon bus architechture.

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Synchronous Interface — All Avalon signals are synchronized to the Avalon

bus clock. This simplifies the relevant timing behavior of the Avalon Bus,

and facilitates integration with high-speed peripherals.

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1.by avalon bus clock does it mean the clock we fed to the processor? If so... how about an SOPC system without any processor?

for example in a system like below this. what is exactly the freq of avalon bus? How can i determine it?

2. what does this sentence actually meant "this simplifies the relevant timing behavior of the avalon bus,

and facilitates integration with high-speed peripherals"

Does it mean that i dont have to worry about syncronization between slower peripheral and highspeed connected to the avalon bus?

Altera_Forum · ‎04-26-2010

Any Avalon device uses the clock specified in the clock columns of sopc builder.

If you have modules using different clocks, you need a clock crossing bridge to match them.

You can find further (and more trustable...) information in the following document:

http://www.altera.com/literature/tt/tt_nios2_system_architect.pdf

(see for example page 3.9)

Altera_Forum · ‎04-26-2010

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Any Avalon device uses the clock specified in the clock columns of sopc builder.

If you have modules using different clocks, you need a clock crossing bridge to match them.

You can find further (and more trustable...) information in the following document:

http://www.altera.com/literature/tt/tt_nios2_system_architect.pdf(see for example page 3.9)

--- Quote End ---

thanks for the documentation and quick reply..:)