Hello support team,
I would like to know the minimum time for one TOF data transfer through SPI.
In case of 25MHz sclk with auto increment mode, the required time to read 4 registeres (TIME, CLK_COUNT, CALIBRATION1&2) is;
{8bit(address) + (24bit(data) * 4)} = 104 sclk cycle
40ns * 104 = 4.16us
Is this correct?
Best regards,
Kaizawa
Hi Kaizawa,
In Auto-increment Mode explained in the section "7.5.1.6 Auto Increment Mode" in the Datasheet of TDC7201
We need 2 8 bit address (one at TDCx_TIME1 & another at TDCx_CALIBRATION1) + 5 * 24 bit addresses ( Need to include the TDC_Time1, TDCx_CLOCK_COUNT1 & TDC_Time 2, TDCx_CALIBRATION1 & TDCx_CALIBRATION2). so a total of 136 clock cycles.
So the calculation is 40ns * 136 = 5.44uS
In Non auto-increment mode, we need 8 bit addresses for each of 5 registers + 5*24 bit address (ie. 5*8 + 5*24) a total of 160 bits.
So here the caluclation is 40ns * 160 = 6.4uS
- Bharat
