Variable delay switch, memory control switch, device for setting the delay time, procedure for setting the delay time and program for setting the delay time

摘要

A variable delay circuit (100) able to change a delay amount from when a signal (IN) is inputted to when the signal is outputted has a first delay section (101) delaying the signal (IN) by a first delay amount, a second delay section (102) delaying the signal (IN) by a second delay amount greater than the first delay amount, and a delay amount selector (103) selecting a signal route where the delay amount is a sum of the first delay amount and the second delay amount when the delay amount exceeds a maximum delay amount available from the first delay amount section (101). The delay amount from when a signal is inputted to when the signal is outputted can be set in a wide range, while suppressing the circuit scale.