Led_Wwan - SimCom SIM7200 Hardware Manual

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
On
200ms On, 200ms Off
800ms On, 800ms Off
2S, 1S On, 1S Off
1.6S, 0.6S On, 1S Off
Off
Reference circuit is recommended in the following figure:
SIM7200-PCIe_ Hardware_Design _V1.01
Working Status
Module is powering up; Searching service;
Data Transmit
Registered network and not in a call
Airplane mode
Device error has occurred
Power off / Sleep
SIM7200
LED_WWAN#
BB Chip
4.7K
GPIO
47K
Figure 20: LED_WWAN# reference circuit
Smart Machine Smart Decision
VCC
R
I-Limit
29 2016-05-19