Yuga CLM920_AC3 - Page 5

CLM920_AC3 Module Hardware Usage Guide
Shanghai Yuge Information Technology co., LTD
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8.2 Abbreviations.............................................................................................................. - 55 -
8.3 Encoding..................................................................................................................... - 56 -
8.4 Safety and precautions................................................................................................ - 58 -
Image index
Figure 2-1 Functional block diagram of the CLM920 AC3 LCC module............................. - 6 -
Figure 3-1 CLM920_AC3 module pin distribution diagram (TOP surface perspective).......- 8 -
Figure 3-2 Power supply design...........................................................................................- 17 -
Figure 3-3 LDO linear power supply reference circuit........................................................ - 17 -
Figure 3-4 DC switching power supply reference circuit.................................................... - 18 -
Figure 3-5 PMOS tube control power switch reference circuit............................................- 18 -
Figure 3-6 Startup timing diagram....................................................................................... - 20 -
Figure 3-7 Open set drive start reference circuit.................................................................. - 21 -
Figure 3-8 Button start reference circuit.............................................................................. - 21 -
Figure 3-9 Shutdown timing diagram...................................................................................- 22 -
Figure 3-10 Reset Reference Circuit.................................................................................... - 23 -
Figure 3-11 Reset timing diagram........................................................................................ - 23 -
Figure 3-12 USB connection design circuit diagram........................................................... - 24 -
Figure 3-13 Four-wire serial port design..............................................................................- 26 -
Figure 3-14 Two-wire serial port design.............................................................................. - 26 -
Figure 3-15 Level conversion chip circuit............................................................................- 27 -
Figure 3-16 RI pin signal waveform.................................................................................... - 28 -
Figure 3-17 USIM design circuit diagram............................................................................- 29 -
Figure 3-18 Hot swap detection of the USIM card.............................................................. - 30 -
Figure 3-19 Network indicator circuit diagram....................................................................- 32 -
Figure 3-20 PCM short frame mode timing diagram........................................................... - 34 -
Figure 3-21 PCM to analog voice map.................................................................................- 34 -