A SYZYGY standard all-in-one multi-sensor module with the following capabilities:
- Ambient Light & Proximity Sensor
(Silicon Labs Si1153-AA00-GMR) - Three IR illuminator LEDs
- GNSS Module, GPS / Galileo / GLONASS / BeiDOu
(u-blox CAM-M8Q) - Internal or external GPS antenna
- Accelerometer, gyroscope, magnetometer
(ST Microelectronics LSM9DS1) - Pressure sensor
(ST Microelectronics LPS22HB) - Temperature and humidity sensor
(ST Microelectronics HTS221)
Resources
- Aligni PLM - See the Attachments tab for schematics and Altium Designer project files.
- SYZYGY Specification
- SYZYGY GitHub Site - Several projects that could be helpful.
SYZYGY Information
Compatibility Table
| Compatibility Parameter | Specification |
|---|---|
| Port type | SYZYGY Standard |
| Width | Single |
| 5V supply required | Yes |
| Nominal 5V supply current | 150mA |
| Nominal 3.3V supply current | < 10mA |
| VIO supply voltage | 1.8V to 3.3V |
| Nominal VIO supply current | < 10mA |
| Total number of I/O | 28 |
| Number of differential I/O pairs | 0 |
DNA Data
This data is stored in the SYZYGY DNA microcontroller on the SZG-SENSOR peripheral.
| DNA Parameter | Data |
|---|---|
| Max 5V Load | 150 mA |
| Max 3.3V Load | 0 mA |
| Max VIO Load | 10 mA |
| IS_LVDS | False |
| IS_DOUBLEWIDE | False |
| VIO Min | 1.8V |
| VIO Max | 3.3V |
Pinout
| SYZYGY (J1) | Connection |
|---|---|
5 (S0) | CAM_M8Q_SPI_CS_N |
6 (S1) | HTS221_CS |
7 (S2) | CAM_M8Q_EXTINT |
8 (S3) | HTS221_DRDY |
9 (S4) | CAM_M8Q_TIMEPULSE |
10 (S5) | HTS221_SPI_SDI_SDO |
11 (S6) | CAM_M8Q_D_SEL |
12 (S7) | LSM9DS1_DEN_AG |
13 (S8) | CAM_M8Q_SAFEBOOT_N |
14 (S9) | LSM9DS1_INT2_AG |
15 (S10) | CAM_M8Q_UART_TXD_SPI_MISO |
16 (S11) | LSM9DS1_INT1_AG |
17 (S12) | CAM_M8Q_UART_RXD_SPI_MOSI |
18 (S13) | LSM9DS1_INT_M |
19 (S14) | GNSS_EXT_ANT_EN |
20 (S15) | LSM9DS1_CS_M |
21 (S16) | LPS22HB_SPI_SDI_SDO |
22 (S17) | LSM9DS1_DRDY_M |
23 (S18) | LPS22HB_SPI_SDO |
24 (S19) | LSM9DS1_CS_AG |
25 (S20) | LPS22HB_INT_DRDY |
26 (S21) | LSM9DS1_SPI_SDO_M |
27 (S22) | LPS22HB_CS |
28 (S23) | LSM9DS1_SPI_SDO_AG |
29 (S24) | SI1153_SCL |
30 (S25) | LSM9DS1_SPI_SDI_SDO |
31 (S26) | SI1153_SDA |
32 (S27) | SI1153_INT |
34 (C2P_CLKp) | SPI_CLK |
Sensor Interfaces
| Sensor | Interface to FPGA | Type |
|---|---|---|
| Si1153 | I2C | Ambient Light + Proximity |
| CAM-M8Q | UART | GNSS (GPS, Galileo, GLONASS, BeiDou) |
| HTS221 | SPI* | Humidity + Temperature |
| LPS22HB | SPI* | Pressure |
| LSM9DS1 | SPI* | Accelerometer + Gyro + Magnetometer |
*All sensors connected over the SPI interface share the same SPI clock signal connected to pin 34 (C2P_CLKp) of the SYZYGY connector.
Design
The circuits used in this design are heavily influenced by the respective manufacturer datasheets and evaluation board application circuits. Please refer to the references below for more information
Additional Documentation & References
CAM-M8x data sheet
https://www.u-blox.com/en/product/cam-m8-series
CAM-M8x evaluation kit
https://www.u-blox.com/en/product/evk-m8xcam
Si1153 data sheet
https://www.silabs.com/products/sensors/optical/si1153
LSM9DS1 data sheet
https://www.st.com/en/mems-and-sensors/lsm9ds1.html
HTS221 data sheet
https://www.st.com/en/mems-and-sensors/hts221.html
LPS22HB data sheet
https://www.st.com/en/mems-and-sensors/lps22hb.html