I2c slave not detecting on TX2 for sensor ov2735/ov5693

I am getting error of “no acknowledge from address 0x3c” on Tx2 when i am attaching it to the Tx2 EVK.
in data sheet of ov2735, slave address is given 0x78 for 8 bit so Tx2 supports 8 bit slave address or 7 bit slave address .

can any body confirm on this.
for ov5693 we are using slave address 0x36,it is 7 bit or 8 bit?

It’s 7 bit address.