4.9 Power Management Interface Signals –Table 4
Name
Type
Description
SYS_RESET#
I
System Reset:
This pin forces an internal reset after being
debounced. The Ibex Peak will reset immediately if the SMBus
is idle; otherwise, it will wait up to 25 ms ± 2 ms for the
SMBus to idle before forcing a reset on the system.
RSMRST#
I
Resume Well Reset:
This signal is used for resetting the
resume power plane logic. This signal must be asserted for at
least 10 ms after the suspend power wells are valid. When
deasserted, this signal is an indication that the suspend power
wells are stable.
LAN_RST#
I
LAN Reset:
When asserted, the internal LAN controller is in
reset. This signal must remain asserted until at least 1 ms after
the LAN power well (VccLAN) and ME power well
(VccME3_3) are valid. Also, LAN_RST# must assert a
minimum of 40 ns before the LAN power rails become
inactive. When deasserted, this signal is an indication that
LAN power wells are stable. Note:
1. If Intel LAN is enabled LAN_RST# must be connected to
the same source as MEPWROK.
2. If Intel LAN is not used or disabled LAN_RST# must be
grounded through an external pull-down resistor.
LAN_PHY_PW
R_CTRL /
GPIO12
O
LAN PHY Power Control:
LAN_PHY_PWR_CTRL should
be connected to LAN_DISABLE_N on the Hanksville PHY.
Ibex Peak will drive LAN_PHY_PWR_CTRL low to put the
PHY into a low power state when functionality is not needed.
NOTES:
LAN_PHY_PWR_CTRL can only be driven low if
SLP_LAN# is deasserted. Signal can instead be used as
GPIO12.
