Other Parts Discussed in Thread: TCA9803, TCA9509, TXS0102-Q1, SN74LVC2G66-Q1, PCA9306-Q1
My questions are related to the thread shown below, but my customer has an issue to control the VOL of TCA9517-Q1. Would you please give me your comments?
My customer's current/original conditions are shown below. They changed the pullup resistors as shown in the datasheet on page 14 to control the VOL of the B-side, but it didn't work as expected, so their system doesn't work.
Pullup resistors=1.5kOhm(all of SCLA/SDAA/SCLB/SDAB)
VOL of B-side=0.56V, but the IC(image sensor) connected to B-side requires VIL≦0.54V, so it has violation.
1. They changed the pullup resistor only on B-side from 1.5kOhm to 6.2kOhm, but the VOL was still 0.56V. Would you please tell me the reason why it is?
2. They changed the PU resistors on both A-side and B-side to 6.2kOhm and it showed VOL on B-side 0.8V. Would you please tell me the reason why it is?
3. They'd like to swap SCL and SDA like SCLA/SCLB to I2C SDA and SDAA/SDAB to I2C SCL. Is it possible?
4. What would you suggest to control the VOL to meet VIL≦0.54V required by the image sensor?