User's Manual

Smart Machine Smart Decision
SIM868_Hardware_Design_V1.00 58 2016-06-20
II. Multiplexing Function
Table 47: Multiplexing function
Pin name Reset Pin number Mode 0(default) Mode 1 Mode 2 Mode 3
SIM1_DET I/PD 14 SIM1_DET GPIO EINT14
SIM2_DET I/PD 52 SIM2_DET GPIO EINT16
NETLIGHT I/PD 41 NETLIGHT GPIO UTXD
UART1_DTR I/PD 6 UART1_DTR GPIO EINT13
UART1_RI I/PD 7 UART1_RI GPIO EINT11
UART1_DCD I/PD 5 UART1_DCD GPIO URXD
UART1_CTS I/PD 4 UART1_CTS GPIO EINT12
UART1_RTS I/PD 3 UART1_RTS GPIO
MCCA3 I/PD 46 MCCA3 DAIPCMOUT(1.8V) GPIO EINT19
MCCA2 I/PD 47 MCCA2 DAICLK(1.8v) GPIO EINT18
MCCA1 I/PD 48 MCCA1 DAIPCMIN(1.8v) GPIO EINT17
MCCA0 I/PD 49 MCCA0 DAISYNC (1.8v) GPIO
MCCK I/PD 50 MCCK GPIO
MCCM0 I/PD 51 MCCM0 GPIO
Note: Multiplexing function need different software supply.
III. Terms and Abbreviations
Table 48: Terms and abbreviations
Abbreviation Description
ADC Analog-to-Digital Converter
AMR Adaptive Multi-Rate
CS Coding Scheme
CTS Clear to Send
DTE Data Terminal Equipment (typically computer, terminal, printer)
DTR Data Terminal Ready
DTX Discontinuous Transmission
EFR Enhanced Full Rate
EGSM Enhanced GSM
ESD Electrostatic Discharge
ETS European Telecommunication Standard
FR Full Rate
GPRS General Packet Radio Service
GSM Global Standard for Mobile Communications
HR Half Rate
MO Mobile Originated
MS Mobile Station (GSM engine), also referred to as TE
MT Mobile Terminated