The CONVST signal initiates the conversion process. A low to high transition on the CONVST signal initiates a conversion of the selected inputs. The BUSY signal goes high to indicate a conversion is in progress. When the BUSY signal transitions from high to low to indicate that a conversion is complete, it is possible to read back conversion results on the parallel interface. Data can be read from the AD7616 via the parallel data bus with standard CS and RD signals. The CS and RD input signals are internally gated to enable the conversion result onto the data bus. The data lines, DB15 to DB0, leave their high impedance state when both CS and RD are logic low. The rising edge of the CS input signal three-states the bus, and the falling edge of the CS input signal takes the bus out of the high impedance state. CS is the control signal that enables the data lines; it is the function that allows multiple AD7616 devices to share the same parallel data bus. The number of required read operations depends on the device configuration. A minimum of two reads are required to read the conversion result for the simultaneously sampled A and B channels. If additional functions such as CRC, status, and burst mode are enabled, the number of required readbacks increases accordingly.

根据你提供的上下文信息，我的理解是CONVST信号启动转换过程。CONVST信号的从低到高的转换启动选定输入的转换。BUSY信号变高以指示正在进行转换。当BUSY信号从高电平向低电平转换以指示转换完成时，可以通过并行接口读取转换结果。可以通过标准的CS和RD信号通过并行数据总线从AD7616读取数据。CS和RD输入信号被内部门控使转换结果进入数据总线。当CS和RD信号均为逻辑低电平时，数据线DB15到DB0离开其高阻态。CS输入信号的上升沿将总线处于三态模式，CS输入信号的下降沿将总线退出高阻态。CS是启用数据线的控制信号；它是允许多个AD7616设备共享同一并行数据总线的功能。所需的读取操作数量取决于设备的配置。至少需要两个读取来读取同时采样的A和B通道的转换结果。如果启用了其他功能，例如CRC、状态和突发模式，则所需的读取次数相应增加。

相关问题

The logic level of the CHSELx signals determine the channel pair for conversion; see Table 13 for signal decoding information. The CHSELx signals at the time that either full or partial reset is released determine the initial channel pair to sample. After a reset, the logic levels of the CHSELx signals are examined during the BUSY high period to set the channel pair for the next conversion. The CHSELx signal level must be set before CONVST goes from low to high and be maintained until BUSY goes from high to low to indicate a conversion is complete. See Figure 51 for further details

根据你提供的上下文信息，我的理解是CHSELx信号的逻辑电平决定了转换的通道对；请参阅表13以获取信号解码信息。在完全或部分重置释放时的CHSELx信号确定了要采样的初始通道对。在重置后，在BUSY高期间检查CHSELx信号的逻辑电平以设置下一次转换的通道对。在CONVST从低电平变为高电平之前必须设置CHSELx信号电平，并保持到BUSY从高电平变为低电平以指示转换完成。请参阅图51以获取更多详细信息。

AD7606_CONVST作用

AD7606_CONVST是指ADI（Analog Devices Inc.）公司推出的一款高速、高精度的模数转换器AD7606中的一个信号引脚。该引脚是控制转换开始的输入引脚，用于触发模数转换的开始。

AD7606是一款16通道的模数转换器，每个通道的采样速率可以达到200kSPS（Samples Per Second），具有16位的分辨率。它可以将模拟电压信号转换为数字信号，并通过SPI（Serial Peripheral Interface）接口输出给微控制器或其他数字设备。

在使用AD7606进行模数转换时，需要使用外部控制信号来触发转换的开始。AD7606_CONVST引脚就是用来接收这个控制信号的。当AD7606_CONVST引脚接收到一个上升沿时，AD7606开始进行模数转换，将模拟信号转换为相应的数字值。

通过控制AD7606_CONVST信号的上升沿，可以精确地控制AD7606的采样时机，以满足不同应用场景的要求。