Specifications

CINTERION
®
BGS12 Hardware Interface Description
Contents
3 of 109 Page
BGS12 HID_V00.
915
Confidential / Released
2019
-
01
-
07
Hardware Interface Description ............................................................................................. 1
1
Introduction ................................................................................................................. 9
1.1 Related Documents ............................................................................................ 9
1.2 Terms and Abbreviations..................................................................................... 9
1.3 Regulatory and Type Approval Information ......................................................... 12
1.3.1 Directives and Standards ..................................................................................... 12
1.3.2 SAR requirements specific to portable mobiles .................................................... 15
1.3.3 Safety Precautions .............................................................................................. 16
2
Product Concept .......................................................................................................... 18
2.1 Key Features at a Glance ................................................................................... 18
2.2 BGS12 System Overview .................................................................................... 21
2.3 Circuit Concept ................................................................................................... 22
3
Application Interface .................................................................................................... 23
3.1 Operating Modes ................................................................................................ 24
3.2 Power Supply ..................................................................................................... 25
3.2.1 Minimizing Power Losses .................................................................................... 25
3.2.2 Measuring the Supply Voltage (V
BATT+
) ............................................................. 26
3.2.3 Monitoring Power Supply by AT Command .......................................................... 26
3.3 Power Up/Power down Scenarios ....................................................................... 26
3.3.1 Turn on BGS12 ................................................................................................... 26
3.3.1.1
Switch on BGS12 Using ON Signal ........................................................ 26
3.3.1.2
Suppressing Unintentional Pulses on ON Signal Line ............................. 28
3.3.2 Restart BGS12 ................................................................................................... 29
3.3.2.1
Restart BGS12 via AT+CFUN Command ................................................ 29
3.3.2.2
Turn off or restart BGS12 Using EMERG_RST ...................................... 29
3.3.3 Signal States after Startup ................................................................................... 30
3.3.4 Turn off BGS12 ................................................................................................... 32
3.3.4.1
Switch off BGS12 Using AT Command ................................................... 32
3.3.5 Automatic Shutdown ........................................................................................... 33
3.3.5.1
Thermal Shutdown ................................................................................. 33
3.3.5.2
Undervoltage Shutdown ......................................................................... 34
3.3.5.3
Overvoltage Shutdown ........................................................................... 34
3.4 Power Saving ..................................................................................................... 35
3.4.1 No Power Saving (AT+CFUN=1) ......................................................................... 35
3.4.2 NON-CYCLIC SLEEP Mode (AT+CFUN=0) ......................................................... 35
3.4.3 CYCLIC SLEEP Mode AT+CFUN=7 .................................................................... 35
3.4.4 CYCLIC SLEEP Mode AT+CFUN=9 .................................................................... 36
3.4.5 Timing of the CTS Signal in CYCLIC SLEEP Modes............................................ 37
3.4.6 Power Saving in OFF-state ................................................................................. 38
3.4.7 Wake up BGS12 from SLEEP Mode ................................................................... 39
3.4.7.1 Wake-up via RTS0 and RTS2 (if AT+CFUN=0 or AT+CFUN=9) ............. 39
3.5 Summary of State Transitions (except SLEEP Mode) ......................................... 40
3.6 RTC Backup ....................................................................................................... 40