Evaluation Software Example Operation; When Adum4138 Is Not Communicating; Example Read Commands - Analog Devices EVAL-ADuM4138EBZ User Manual

UG-1194

EVALUATION SOFTWARE EXAMPLE OPERATION

These examples assume that the setup described in the Setting
Up the Evaluation Board section is used.
WHEN ADUM4138 IS NOT COMMUNICATING
If the ADuM4138 is not powered, and the
is plugged into the evaluation board, read commands usually
report all 0s. By reading all registers, it is possible to see if the
ADuM4138 is communicating properly, as the address bits are
displayed on a read command. Additionally, with default
settings, the Flyback_V setting is 111 (see Figure 9).
USB-SDP-CABLEZ
Figure 9. All Zeros Show Communication is Not Occurring
Rev. 0 | Page 10 of 18
EVAL-ADuM4138EBZ

EXAMPLE READ COMMANDS

To perform a read command, first power up the ADuM4138.
Then click the read button of the desired address to be read.
If the ADuM4138 EEPROM has never been programmed, it is
expected that all 0s except the address are returned, and a
Flyback_V setting of 111 in default configuration. Figure 10
shows Read Addr:00, Read Addr:01, and Read Addr:10
clicked on a new ADuM4138.
User Guide