发明授权
US08917130B2 Semiconductor device including a delay locked loop circuit 有权
半导体器件包括延迟锁定环电路

Semiconductor device including a delay locked loop circuit
摘要:
A method for initializing a delay locked loop having a delay circuit includes a plurality of serially connected delay elements and a counter circuit for selecting an output of one of the delay elements as an output clock signal. The method includes resetting an initial delay control circuit, generating, with the initial delay control circuit, a pulse based on a period of an input clock signal, determining, with the initial delay control circuit, a number of delay elements required to produce a delay time at least substantially equivalent to a pulse width for a preset signal, initializing the counter circuit based on the preset signal and adjusting the counter circuit in response to phases of the input and output clock signals.
信息查询
0/0