Service Guide
Table Of Contents
- Safety Information
- About the Document
- Contents
- Table Index
- Figure Index
- 1 Introduction
- 2 Product Overview
- 3 Operating Characteristics
- 4 Application Interfaces
- 5 Antenna Interfaces
- 6 Reliability, Radio, and Electrical Characteristics
- 7 Mechanical Information
- 8 Storage, Manufacturing, and Packaging
- 9 Appendix References
LTE Standard Module Series
EG915U_Series_Hardware_Design 53 / 90
Table 23: Pin Definition of PSM Interface
Pin Name
Pin No.
I/O
Description
PSM_IND
1
DO
Indicates the module’s power saving mode.
PSM_EINT
96
DI
External interrupt pin. Wakes up the module from PSM.
4.10. Indication Signals
Table 24: Pin Definition of Indication Signals
4.10.1. NET_STATUS
The network indication pin NET_STATUS can drive the network status indicator. The following table
describes its pin definition and working states in different network status.
Table 25: Pin Definition of Network Connection Status/Activity Indication
Table 26: Working States of Network Connection Status/Activity Indication
Pin Name
Pin No.
I/O
Description
Comment
STATUS
20
DO
Indicates the module’s operation status
1.8 V power
domain.
If unused, keep
them open.
AP_READY
19
DI
Application processor ready
NET_STATUS
21
DO
Indicates the module’s network activity
status
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
NET_STATUS
21
DO
Indicates the module’s
network activity status
V
OH
min = 1.35 V
V
OL
max = 0.45 V
1.8 V power
domain.
If unused, keep it
open.
Pin Name
State
Network Status
NET_STATUS
Flicker slowly (200 ms high/1800 ms low)
Network searching