Fibocom L831-EAU-01 - Hardware Framework; Application Interface; M.2 Interface

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L831-EAU-01 Hardware User Manual Page
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2.4 Hardware Framework
The hardware framework in Figure 2-2 shows the main hardware functions of L831-EAU module,
including base band and RF functions.
Baseband contains the followings:
 UMTS/LTE FDD controller/Power supply

NAND/Micron LPDDR2 RAM
 Application interface
RF contains the followings:

RF Transceiver
 RF Power/PA
 RF Front end

RF Filter
 GNSS
 Antenna
Figure 2-2 Hardware Framework
3 Application Interface
3.1 M.2 Interface
The L831-EAU module applies standard M.2 Key-B interface, with a total of 75 pins.