高电平有效复位。
随后，在预先设定的有效延时时间后，其从低电平有效复位回到高电平状态。
Subsequently, after a predetermined time-out-active period, it goes back to the high state in an active-low reset.
随后，在预先设定的有效延时时间后，其从低电平有效复位回到高电平状态。
Subsequently, after a predetermined time-out-active period, it goes back to the high state in an active-low reset.
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