4.4.3 Prevent sleep
Figure 4-9: Prevent standby
The CM_Eth_Combo can work in two different operation modes:
Prevent sleep: The CM_Eth_Combo works at full capacity and never falls into
Sleep-mode.
Prevent Sleep: The CM_Eth_Combo works at full capacity as long as there is
communication on supervised ports. If there is no communication for defined
time in field Sleep Timeout, the CM_Eth_Combo falls asleep. The consumption
is reduced to zero and only the wake-up lines in the black Power Connector at
the frontside can wake up the CM_Eth_Combo.
(More information can be found in CHAPTER 4.4.3.1and CHAPTER 4.5 [Keep Awake
Reason Bus of each port])
4.4.3.1 Staying alive conditions
If there is any communication on one of the supervised 100BASE-T1 ports (Host port
included) or 1000BASE-T1 ports or a high level on one of the WakeUP lines the
CM_Eth_Combo is staying alive.
As described in CHAPTER 2.1.1, there are 2 Wake up lines:
4.4.3.2 Wake up conditions
If the device is in sleep mode, it can only be waked up by high level on the WakeUP 1
or WakeUP 2.
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