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H350 LGA Serials Module Hardware User Manual Page 25 of 37
5.3
Indicator Signal
5.3.1
Pin Description
Pin#
Pin Name
Description
54
LPG
Work mode indicator
43
SMI
Sleep Mode Indicator
49
WAKE_UP
Wake up module
5.3.2
Indicator Description
5.3.2.1
LPG Signal
LPG signal description:
Status
Mode
idle(unregistered
600ms
)
high level, 600ms low level
idle(registered)
75ms high level, 3S low level
Call
low level
Data communicating
75ms high level, 75ms low level
Sleep
high level
Note: H
5.3.2.2
SMI
igh level voltage is 1.8V.
Module Mode
Mode
Sleep Mode
2.5S High level; 100ms Low level alternate change
Other Mode
low level
5.3.2.3
WAKE_UP
Module Mode
WAKE_UP Signal
Description
Sleep
Low level
Wake up module, switch from Sleep to Idle
High level
Stay in Sleep mode
Idle/Call
Low level
Keep mode, no affect
High level
Module cannot set to Sleep mode