Altera Arria V Avalon-ST - Manual (Page 82)

Power Management Signals
Table 4-17: Power Management Signals
Signal Direction Description
pme_to_cr Input Power management turn off control register.
Root Port—When this signal is asserted, the Root Port sends the
PME_turn_off
message.
Endpoint—This signal is asserted to acknowledge the
PME_turn_
off
message by sending
pme_to_ack
to the Root Port.
pme_to_sr Output Power management turn off status register.
Root Port—This signal is asserted for 1 clock cycle when the Root
Port receives the
pme_turn_off
acknowledge message.
Endpoint—This signal is asserted for 1 cycle when the Endpoint
receives the
PME_turn_off
message from the Root Port.
pm_event Input Power Management Event. This signal is only available for
Endpoints.
The Endpoint initiates a a
power_management_event
message
(PM_PME) that is sent to the Root Port. If the Hard IP is in a low
power state, the link exits from the low-power state to send the
message. This signal is positive edge-sensitive.
pm_event_func[2:0] Input
Specifies the function associated with a Power Management
Event.
2014.12.15
Power Management Signals 4-45
Interfaces and Signal Descriptions Altera Corporation
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