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| PIN | |
| Pin |
|
|
| Name |
|
| Direction |
| Function |
| Connection | |
|
|
|
|
|
|
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|
|
|
| Required | |
35 |
|
|
| TX_ON |
|
| Output |
| Transmit indication |
|
|
| |
36 |
|
|
| RI |
|
| Output |
| Ring Indicator |
|
|
| |
|
|
| GPIO8 |
|
| In/Out |
| General purpose IO |
|
|
| ||
|
|
|
|
|
|
|
|
|
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| |||
37 |
|
|
| DTR1 |
|
| Input |
| Data Terminal Ready (UART1) |
|
| Yes2 | |
|
|
| GPIO10 |
|
| In/Out |
| General purpose IO |
|
|
| ||
|
|
|
|
|
|
|
|
|
|
| |||
38 |
|
|
| DCD1 |
|
| Output |
| Data Carrier Detect (UART1) |
|
|
| |
|
|
| GPIO11 |
|
| In/Out |
| General purpose IO |
|
|
| ||
|
|
|
|
|
|
|
|
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| |||
39 |
|
|
| RTS1 |
|
| Input |
| Ready To Send (UART1) |
|
| Yes2 | |
|
|
| GPIO9 |
|
| In/Out |
| General purpose IO |
|
|
| ||
|
|
|
|
|
|
|
|
|
|
| |||
40 |
|
|
| CTS1 |
|
| Output |
| Clear To Send (UART1) |
|
| Yes2 | |
|
|
| GPIO12 |
|
| In/Out |
| General purpose IO |
|
|
| ||
|
|
|
|
|
|
|
|
|
|
| |||
41 |
|
|
| DTM1 |
|
| Input |
| Data To Module from host (UART1) |
|
| Yes3 | |
42 |
|
| DFM1 |
|
| Output |
| Data From Module to host (UART1) |
|
| Yes3 | ||
43 |
|
|
| DTM3 |
|
| Input |
| Data To Module from host (UART3) |
|
|
| |
44 |
|
|
| DFM3 |
|
| Output |
| Data From Module to host (UART3) |
|
|
| |
45 |
|
|
| USBDP |
|
| In/Out |
| USB data positive |
|
| Yes4 | |
46 |
|
|
| USBDN |
|
| In/Out |
| USB data negative |
|
| Yes4 | |
47 |
|
|
| SSPDTM |
|
| Input |
| Serial PCM data to module from host |
|
|
| |
48 |
|
|
| SSPDFM |
|
| Output |
| Serial PCM data from module to host |
|
|
| |
49 |
|
|
| VUSB |
|
| Input |
| USB DC power |
|
| Yes4 | |
50 |
|
|
| ALARM |
|
| Output |
| RTC alarm |
|
|
| |
51 |
|
| SSPFS |
|
| In/Out |
| Serial PCM frame synchronization |
|
|
| ||
52 |
|
|
| SSPCLK |
|
| In/Out |
| Serial PCM clock |
|
|
| |
53 |
|
|
| MICIP |
|
| Input |
| Microphone input positive |
|
|
| |
54 |
|
|
| MICIN |
|
| Input |
| Microphone input negative |
|
|
| |
55 |
|
|
| EARP |
|
| Output |
| Earpiece output positive |
|
|
| |
56 |
|
|
| EARN |
|
| Output |
| Earpiece output negative |
|
|
| |
57 |
|
|
| AUXO |
|
| Output |
| Auxiliary audio from module to host |
|
|
| |
58 |
|
|
| SERVICE |
|
| Input |
| Flash programming enable signal |
|
|
| |
59 |
|
|
| AUXI |
|
| Input |
| Auxiliary audio to module from host |
|
|
| |
60 |
|
|
| AREF | - |
| Analogue reference |
|
|
| |||
1- These signals are required if the external SIM interface is used
2- These pin connections are required for sleep mode operation 3, 4 - At least one of these interfaces is required to be connected
NOTE
LZT 123 1834 | 31 |