All programmable registers must be static for a minimum of 10 clock cycles prior to writing a “1” to the bist_go parameter.解释以下
时间: 2024-04-14 12:31:34 浏览: 32
这个说法是指在写入"BIST_GO"参数之前,所有编程寄存器必须保持静态状态,即不能进行写操作,至少要持续10个时钟周期。
在BIST(内建自检)过程中,"BIST_GO"参数用于启动自检操作。为了确保正确的自检过程,必须在写入"BIST_GO"参数之前,保证所有相关的可编程寄存器处于稳定状态,不发生任何写操作。
这种限制的目的是确保在自检开始时,所有的寄存器和配置都已经正确设置,并且没有未完成的操作。通过保持静态状态,可以避免潜在的数据冲突或竞争条件,确保自检过程的准确性和可靠性。
请注意,在具体的设计中,可能会有其他特定的要求和约束。因此,最好参考相关的技术文档或咨询厂商以获取准确的寄存器写入要求和限制信息。
相关问题
翻译Device configuration register The device has various configuration settings that are global in nature. The configuration settings are as follows: • When the 33978 is in the overvoltage region, a Logic [0] on the VBATP OV bit limits the wetting current on all input channels to 2 mA and the 33978 will not be able to enter into the Low-power mode. A Logic [1] allows the device to operate normally even in the overvoltage region. The OV flag will be set when the device enters in the OV region, regardless the value of the VBATP OV bit. • WAKE_B can be used to enable an external power supply regulator to supply the VDDQ voltage rail. When the WAKE_B VDDQ check bit is a Logic [0], the WAKE_B pin is expected to be pulled-up internally or externally to VDDQ and VDDQ is expected to go low, therefore the 33978 does not wake-up on the falling edge of WAKE_B. A Logic [1], assumes the user is using an external pull-up to VBATP or VDDQ (when VDDQ is not expected to be off) and the IC wakes up on a falling edge of WAKE_B. • INT_B out is used to select how the INT_B pin operates when an interrupt occurs. The IC is able to pulse low [1] or latch low [0]. • Aconfig[1-0] is used to determine the method of selecting the AMUX output, either a SPI command or using a hardwired setup using SG[3-1]. • Inputs SP0-7 may be programmable for switch-to-battery or switch-to-ground. These inputs types are defined using the settings command. To set a SPn input for switch-to-battery, a logic [1] for the appropriate bit must be set. To set a SPn input for switch-toground, a logic [0] for the appropriate bit must be set. The MCU may change or update the programmable switch register via software at any time in Normal mode. Regardless of the setting, when the SPn input switch is closed a logic [1] is placed in the serial output response register.
设备配置寄存器
该设备具有多种全局性质的配置设置。配置设置如下:
• 当33978处于过压区域时,VBATP OV位为逻辑[0]将所有输入通道的润湿电流限制为2 mA,并且33978无法进入低功耗模式。逻辑[1]允许设备即使在过压区域正常运行。当设备进入过压区域时,OV标志将被设置,而不管VBATP OV位的值如何。
• WAKE_B可用于启用外部电源调节器来供应VDDQ电压轨。当WAKE_B VDDQ检查位为逻辑[0]时,预期WAKE_B引脚会被内部或外部拉高到VDDQ,并且预期VDDQ会变低,因此33978不会在WAKE_B下降沿唤醒。逻辑[1]假设用户正在使用外部上拉到VBATP或VDDQ(当不希望VDDQ关闭时),并且IC在WAKE_B下降沿唤醒。
• INT_B out用于在发生中断时选择INT_B引脚的操作方式。IC能够脉冲低电平[1]或锁定低电平[0]。
• Aconfig [1-0]用于确定选择AMUX输出的方法,可以是SPI命令或使用硬连线设置使用SG [3-1]。
• 输入SP0-7可以编程为切换至电池或切换至地。这些输入类型使用设置命令进行定义。要将SPn输入设置为切换至电池,必须设置相应位的逻辑[1]。要将SPn输入设置为切换至地,必须设置相应位的逻辑[0]。MCU可以在正常模式下随时通过软件更改或更新可编程开关寄存器。无论设置如何,当SPn输入开关闭合时,逻辑[1]将放置在串行输出响应寄存器中。
Parameter error in the 'untitled/Three-Phase Programmable Voltage Source/Model/Signal Generator/Stair Generator' block: Transition times must be >= StartTime怎么办
这个错误提示是指“Stair Generator”模块中的“Transition times”参数需要大于或等于“StartTime”参数。您可以尝试更改“StartTime”和“Transition times”参数使其满足这个条件,或者您也可以尝试将“Transition times”参数设置为默认值,并确保“StartTime”参数不是负数。
另外,您还可以在Simulink中使用“Debugging Mode”来找出具体哪个参数引起了错误,并进行相应的修改。