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MV31-W Hardware Interface Description
5.5 Timing Sequence Requirement
75
t
MV31-W_HID_v01.009a
2022-04-27
Public / Preliminary
Page 56 of 76
5.5.2
Power Off Timing Requirement
•
The platform should follow the requirement when the device power is Off by
M.2 PIN#6
and
when Windows enters S4 and S5.
•
Device Power Off by M.2 PIN#6 (Full_Card_Power_Off):
- For Windows10: Platform performs M.2 PIN#6 power off after sending CID_M-
BIM_MSHOSTSHUTDOWN to MV31-W and receiving CID_MBIM_MSHOSTSHUT-
DOWN MBIM_COMMAND_DONE from MV31-W
Figure 28:
Device power off behavior for Windows 10
PC
MV31
‐
W
If in online mode,
put to LPM
system(“sync;sync;sync”);
If in online mode,
put to LPM
CID_MBIM_MSHOSTSHUTDOWN (set)
M.2 PIN#6
MBIM_COMMAND_MSG
CID_MBIM_MSHOSTSHUTDOWN
MBIM_COMMAND_DONE
Full_Card_Power_Off
system(“sync;sync;sync”);
system(“sys_shutdown”);
The Mobile Broadband Class Driver sends the
host shutdown notification
(CID_MBIM_MSHOSTSHUTDOWN) to mobile
broadband devices supporting this device
service, on each host state transition into S4
and S5 statuses