SIM7600 Documents
===

Mostly retrieved from [Waveshare's SIM7600 Wiki](http://www.waveshare.com/wiki/SIM7600A-H_4G_HAT).

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| ![SIM7600X 4G HAT Pinout](SIM7600A-H-4G-HAT-details-intro.jpg) |



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| 1 | SIM7600A-H |
| 2 | CP2102 USB to UART converter |
| 3 | NAU8810 audio decoder |
| 4 | TXS0108EPWR voltage translator translates 3.3V/5V into 1.8V |
| 5 | MP2128DT power chip |
| 6 | MP1482 power chip |
| 7 | Raspberry Pi GPIO header |
| 8 | SIM7600 control interface for connecting with host boards like Arduino/STM32 |
| 9 | SIM card slot supports 1.8V/3V SIM card |
| 10 | 3.5mm earphone/mic jack |
| 11 | USB interface for testing AT Commands, getting GPS positioning data, etc. |
| 12 | USB to UART interface for serial debugging, or login to Raspberry Pi |
| 13 | MAIN antenna connector |
| 14 | AUX antenna connector |
| 15 | GNSS antenna connector |
| 16 | Power switch |
| 17 | Network status indicator |
| 18 | Power indicator |
| 19 | Operating voltage selection jumper, configured via 0Ω resistor jumper, VCCIO - 3.3V: set operating voltage as 3.3V, VCCIO - 5V: set operating voltage as 5V |
| 20 | UART selection jumper, A: access Raspberry Pi via USB to UART, B: control the SIM7600 by Raspberry Pi, C: control the SIM7600 via USB to UART |
| 21 | PWR configuration jumper, PWR - 3V3: auto startup on power-up (default), PWR - D6: startup/shutdown by the Raspberry Pi D6 pin, Flight mode configuration jumper, NC by default, no flight mode control pin, Flight - D4: flight mode is controlled by the Raspberry Pi D4 pin |
| 22 | USB connector solder pads |
| 23 | BOOT forced programming solder pads |

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| ![SIM7600X 4G Hat Pinout Description](SIM7600A-H-4G-HAT-details-inter.jpg) |