RemarksAn SPI ratio greater than 1 indicates that you're ahead of schedule. Likewise, an SPI ratio less than 1 indicates that you're behind schedule. For example, an SPI of 1.5 means that you've taken only 67 percent of the planned time to complete a portion of a task in a given ti...
CPHA=0 means sampling on the first clock edge, while CPHA=1 means sampling on the second clock edge, regardless of whether that clock edge is rising or falling. Note that with CPHA=0, the data must be stable for a half cycle before the first clock cycle. ...
This effec- tive resistance at the loaded frequency of oscillation is: R1 x ( 1 + (CO / CLOAD))2 For typical CO and CLOAD values, the effective resis- tance can be greater than R1 by a factor of 2. MAX3421E in a Bus-Powered Peripheral Application Figure 19 depicts the MAX3421E ...
All incoming signals are synchronized to the AXI clock when the Frequency Ratio parameter is greater than 4. Because of the tight timing requirements when the Frequency Ratio parameter is set to 4, the incoming SCK clock signal and its synchronized signals are used directly in the internal logic...
If the dataSize is greater than 16 bits, the driver assumes the data buffers are uint32_t (unsigned long). Some SPI driver implementations may not support all data sizes; refer to device specific SPI implementation documentation for details on what data sizes are supported. The optional SPI_...
The I2C interface supports slow (up to 100kHz), fast (up to 400kHz), and high-speed (up to 3.4MHz) protocols. I2C recognizes high and low signals based on CMOS voltage levels: a low signal is less than 0.3 x supply voltage; a high signal is greater than 0.7 x supply voltage. ...
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To obtain a signal on a PWMx pin, the contents of the OCRx register must be greater than the contents of the ARTARR reg- ister. put push-pull alternate function. The maximum available resolution for the PWMx The PWM signals all have the same frequency )which is controlled by the ...
If the software reloads the counter while the counter is greater than the value stored in the window register, then a reset is generated. Figure 34. Watchdog Block Diagram RESET WATCHDOG WINDOW REGISTER (WDGWR) - W6 W5 W4 W3 W2 W1 W0 comparator = 1 when T6:0 > W6:0 CMP Write WD...
To begin a communication, the master first configures the clock, using a frequency less than or equal to the maximum frequency the slave device supports. Such frequencies are commonly in the range of 1-70 MHz.The master then pulls the slave select low for the desired chip. If a waiting ...