10.1 Principles
eNod4 device is able to handle several functional commands thanks to a couple of registers (except in SCMBus
protocols):
the command register : dedicated to accept the functional commands
the response register : gives the state of the command currently being processed by eNod4 (no command, in progress,
finished, failed)
• 00
H
free to accept a new command
• 01
H
command execution in progress
• 02
H
command execution complete
• 03
H
error during command execution
Note 1: IMPORTANT except in SCMBus/fast SCMBus protocols, to accept a new command, the command register
must be set to 00
H
first. This causes the response register to be set back to 00
H
.