Neoway N58 - Page 6

N58 Hardware User Guide
Figures
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Figure 5-26 SPI reference design .................................................................................................... 51
Figure 5-27 I2C reference design .................................................................................................... 51
Figure 5-28 Reference design of differential MIC input ................................................................... 52
Figure 5-29 Reference design of the built-in power amplifier .......................................................... 53
Figure 5-30 Reference design of the external power amplifier ........................................................ 54
Figure 5-31 Reference design of driving an LED indicator by controlling a triode ........................... 57
Figure 5-32 RING prompt for an incoming voice call ....................................................................... 58
Figure 5-33 RING prompt for an SMS message .............................................................................. 58
Figure 5-34 Reference design of forcible download ........................................................................ 59
Figure 5-35 Reference design of VBACKUP and VRTC power supply ........................................... 60
Figure 5-36 Keypad reference design .............................................................................................. 61
Figure 5-37 1PPS output waveform ................................................................................................. 62
Figure 5-38 Reference design of GNSS active antenna power supply and detection circuit .......... 63
Figure 5-39 L-type matching network .............................................................................................. 64
Figure 5-40 T-type matching network ............................................................................................... 64
Figure 5-41 π-type matching network .............................................................................................. 64
Figure 5-42 Recommended RF PCB design ................................................................................... 65
Figure 5-43 GNSS structure inside the module ............................................................................... 66
Figure 5-44 Reference design of an active GNSS antenna ............................................................. 67
Figure 5-45 Reference design of a passive GNSS antenna ............................................................ 68
Figure 5-46 Package specifications of Murata's GSC RF connector ............................................... 69
Figure 5-47 Module RF connection method ..................................................................................... 69
Figure 5-48 Antenna layout example ............................................................................................... 70
Figure 5-49 Layout around the antenna ........................................................................................... 70
Figure 8-1 N58 top and side dimensions (unit: mm) ........................................................................ 77
Figure 8-2 N58 label examples ........................................................................................................ 78
Figure 9-1 Bottom view of the N58 module PCB package (unit: mm) ............................................. 81
Figure 9-2 Top view of the recommended N58 application PCB package (unit: mm) ..................... 82
Figure 9-3 SMT furnace temperature curve ..................................................................................... 83