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ADS8588H的CONVST Control 时序图中的RESET信号

Other Parts Discussed in Thread: ADS8588H

ADS8588H的CONVST Control 时序图中的RESET信号是要一上电只给一次,还是每次当CONVSTA低电平时给一次复位信号,求助!最近在写FPGA驱动程序,相关内容在手册中的P15页的图1,及P36的P7.4.1.6,看过之后还是不太确定

  • 从P7.4.1.6的介绍来看,是当每一次重新转换的时候,进行一次复位,并且为了防止reset 的无效,还需要有一个小小的延迟tSU_RSTCN,即建立时间。
    In order to initiate the next conversion cycle after deactivating a reset condition, allow for a minimum time delay
    between the falling edge of the RESET input and the rising edge of the CONVSTA, CONVSTB inputs (see the
    Timing Requirements: CONVST Control table). Any violation in this timing requirement can result in corrupting
    the results from the next conversion
  • 嗯,多谢!我一开始也从P7.4.1.6的话中觉得是您说的那样,应该是每次转换搞一个RESET,但是这种理解与P15页的图1中RESET时序图是不一致的,您看P15图1中的第二个CONVSTA上升沿之前的那段低电平时间内,RESET信号就没有给拉高复位,应该按照哪种理解呢,求赐教。