Translated signals (multiple level) with LS7366R
Posted: Fri Sep 10, 2021 2:20 am
Hello all,
I’m using 2 LS7366R ICs for interfacing with our two encoders. Now, our encoders operate at 5V and we are supplying 5V VCC to the LS7366 chips as well. However, our control unit consists of Rpi running @3.3V. So, I wanted to know is it okay if I just use the level translators and connect it to Pi?
Have a look at the schematic below.The idea is that both counter ICs U9 and U15 will be connected to the same MISO, MOSI and SCK signals ( which are thereafter connected to level translators.The slave select signals are different though.
( LS7366R Technical Specifications Source: blog )
Can anyone confirm that the MOSI/MISO lines will not behave in any unexpected way or is there a better way of achieving such a functionality in our design? Thanks in advance.
I’m using 2 LS7366R ICs for interfacing with our two encoders. Now, our encoders operate at 5V and we are supplying 5V VCC to the LS7366 chips as well. However, our control unit consists of Rpi running @3.3V. So, I wanted to know is it okay if I just use the level translators and connect it to Pi?
Have a look at the schematic below.The idea is that both counter ICs U9 and U15 will be connected to the same MISO, MOSI and SCK signals ( which are thereafter connected to level translators.The slave select signals are different though.
( LS7366R Technical Specifications Source: blog )
Can anyone confirm that the MOSI/MISO lines will not behave in any unexpected way or is there a better way of achieving such a functionality in our design? Thanks in advance.