Hello,
are the ADN4696E/ADN4697E logic level compatibles with ADN4661/ADN4662?
Can I directly connect these 2 devices?
Thanks in advance
Maurizio.
Hello,
are the ADN4696E/ADN4697E logic level compatibles with ADN4661/ADN4662?
Can I directly connect these 2 devices?
Thanks in advance
Maurizio.
Hello Maurizio,
Thank you for the explanation. If I understand correctly, the board in design may be SPI master or slave (Potentially ADN4696E for the interface) that will connect to one other board (either a master or a slave, with ADN4661/ADN4662).
Going by the datasheets for these devices, this should work, but contention should be avoided where there is an ADN4661 at the other end of a channel. For example when the new board is connected, have all the ADN4696E devices in receive only mode (DE and /RE low) to begin with.
If I understand correctly, there would be the following two cases for the new board once it is connected:
New board is Master:
SPI signal (as LVDS) | New Board (as master) Devices | Direction | Old Slave Board Devices |
---|---|---|---|
/CS | ADN4696E (DE high, /RE high) | ---> | ADN4662 |
CLK | ADN4696E (DE high, /RE high) | ---> | ADN4662 |
MOSI | ADN4696E (DE high, /RE high) | ---> | ADN4662 |
MISO | ADN4696E (DE low, /RE low) | <--- | ADN4661 |
New board is Slave:
SPI signal (as LVDS) | New Board (as slave) Devices | Direction | Old Master Board Devices |
---|---|---|---|
/CS | ADN4696E (DE low, /RE low) | <--- | ADN4661 |
CLK | ADN4696E (DE low, /RE low) | <--- | ADN4661 |
MOSI | ADN4696E (DE low, /RE low) | <--- | ADN4661 |
MISO | ADN4696E (DE high, /RE high) | ---> | ADN4662 |
Regards,
Conal
Hello Maurizio,
Thank you for the explanation. If I understand correctly, the board in design may be SPI master or slave (Potentially ADN4696E for the interface) that will connect to one other board (either a master or a slave, with ADN4661/ADN4662).
Going by the datasheets for these devices, this should work, but contention should be avoided where there is an ADN4661 at the other end of a channel. For example when the new board is connected, have all the ADN4696E devices in receive only mode (DE and /RE low) to begin with.
If I understand correctly, there would be the following two cases for the new board once it is connected:
New board is Master:
SPI signal (as LVDS) | New Board (as master) Devices | Direction | Old Slave Board Devices |
---|---|---|---|
/CS | ADN4696E (DE high, /RE high) | ---> | ADN4662 |
CLK | ADN4696E (DE high, /RE high) | ---> | ADN4662 |
MOSI | ADN4696E (DE high, /RE high) | ---> | ADN4662 |
MISO | ADN4696E (DE low, /RE low) | <--- | ADN4661 |
New board is Slave:
SPI signal (as LVDS) | New Board (as slave) Devices | Direction | Old Master Board Devices |
---|---|---|---|
/CS | ADN4696E (DE low, /RE low) | <--- | ADN4661 |
CLK | ADN4696E (DE low, /RE low) | <--- | ADN4661 |
MOSI | ADN4696E (DE low, /RE low) | <--- | ADN4661 |
MISO | ADN4696E (DE high, /RE high) | ---> | ADN4662 |
Regards,
Conal