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Altera_Forum's avatar
Altera_Forum
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17 years ago

Internal generated clock muxing

Hi all, since I used quartus I still have the same problem in all kind of design. The problem is the following: When I syntethize an internal clock from another one all time I've been reporte...
Altera_Forum's avatar
Altera_Forum
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17 years ago

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After the Mux I've a clk_control block that redirect it on a regional clock.

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If the clock control block in your device family supports clock muxes, then implement the mux inside the clock control block with altclkctrl. Compared to doing the mux portion in logic resources, the clock control block will have less of a problem with things like duty cycle distortion. (See "Advantages of clock control blocks" in post# 7 at http://www.alteraforum.com/forum/showthread.php?t=2388.)