Smart Machine Smart Decision
SIM7200-PCIe_ Hardware_Design _V1.01
29
2016-05-19
4.9
LED_WWAN#
LED_WWAN# is an Open drain active low signal; this signal is used to allow SIM7200 to provide network status
via LED which will be provided by the host.
Table 17: Network Status Indication Pin Status
LED_WWAN# Status
Working Status
On
Module is powering up; Searching service;
200ms On, 200ms Off
Data Transmit
800ms On, 800ms Off
Registered network and not in a call
2S, 1S On, 1S Off
Airplane mode
1.6S, 0.6S On, 1S Off
Device error has occurred
Off
Power off / Sleep
Reference circuit is recommended in the following figure:
SIM7200
4.7K
47K
BB Chip
GPIO
R
I-Limit
VCC
LED_WWAN#
Figure 20: LED_WWAN# reference circuit
