DM1103
1. SYSTEM OVERVIEW
1.1 General Description
DM1103 is a high-performance mini PCIe-form GNSS module based on Allystar TAU1103 which is with the state-of-the-art Allystar Cynosure III Lite architecture. It has a Full-Mini size and Half-mini size.
It supports global civil navigation systems, including GPS, BDS, GLONASS, Galileo, and QZSS.
Featured with SAW and LNA, it achieves high positioning accuracy and short TTFF, especially in a harsh urban environment.
The standard mini PCIe interface makes these modules easy to integrate into the laptop, industrial PC, and other applications.
1.2 Features
- Supports GPS, BDS, Galileo, GLONASS, and QZSS systems Built-in LNA & SAW for better sensitivity
- Supports A-GNSS
- Supports geo-fence function
- Ultra-low power consumption around 13mA in tracking mode
- Supports antenna supervision
| P/N | Option | GPS/QZSS | BDS | GLONASS | Galileo |
|---|---|---|---|---|---|
| L1 C/A | B1I | L1 | E1 | ||
| DM1103-P0 | Full-mini PCIe | ● | - | ● | ● |
| DM1103-P1 | Half-mini PCIe | ● | - | ● | ● |
1.3 Block diagram
1.4 Specifications
| Parameters | Specification | ||
|---|---|---|---|
| GNSS tracking channels | 72 channels GPS/QZSS: L1C/A Galileo: E1 GLONASS: L1OF | ||
| Updating rate | 1 Hz (Default), up to 5 Hz | ||
| Position accuracy | GNSS | < 1.5 m CEP @ Open Sky | |
| Velocity & Time accuracy | GNSS | 0.1 m/s CEP | |
| 1PPS | 20ns [1] | ||
| Time to First Fix(TTFF) | Hot start | 1 s | |
| Cold start | 28 s | ||
| Sensitivity | Cold start | -149 dBm | |
| Reacquisition | -159 dBm | ||
| Tracking | -163 dBm | ||
| Power supply | VDD | 2.0-3.63 V, Typical 3.3 V | |
| Power consumption | Operating mode | Acquisition | 15mA @3.3V |
| Tracking | 13mA @3.3V | ||
| Standby mode | 10uA | ||
| Interface | USB | ||
| PPS signal accuracy | Typical ±1ms for PPS through USB [1] | ||
| Protocol | NMEA 0183 Protocol Ver.3.01/4.00 (Default)/4.10 | ||
| Operating limit | Velocity | 515 m/s | |
| Altitude | 18,000 m | ||
| Temperature | Operating temperature | -40०C ~ +85०C | |
| Storage temperature | |||
| Certification | RoHS & REACH | ||
[1]: get PPS by checking DCD. PPS accuracy is related to USB poll interval.
2. PIN DESCRIPTION
2.1 Detailed Pin Descriptions
| Pin# | Name | Pin# | Name |
|---|---|---|---|
| 1-3 | NC | 4 | GND |
| 5-8 | NC | 9 | GND |
| 10-14 | NC | 15 | GND |
| 16-17 | NC | 18 | GND |
| 19 | NC | 20 | W_DISABLE# |
| 21 | GND | 22-25 | NC |
| 26-27 | GND | 28 | NC |
| 29 | GND | 30-33 | NC |
| 34-35 | GND | 36 | USB_D- |
| 37 | GND | 38 | USB_D+ |
| 39 | NC | 40 | GND |
| 41-42 | NC | 43 | GND |
| 44-49 | NC | 50 | GND |
| 51 | NC | 52 | +3.3Vaux |
3. MECHANICAL SPECIFICATION
The dimension and pin definition is compliant with PCI Express Mini Card Revision 1.2.
the following pictures is from “PCI Express Mini Card Revision 1.2”.
Full size dimessions
Half size dimessions
4. Others
4.1 Exclusive Binary Message
The common exclusive commands show as bellows:
| Command description | Software[command][1] |
|---|---|
| Perform a Cold start | F1 D9 06 40 01 00 01 48 22 |
| Perform a Warm start | F1 D9 06 40 01 00 02 49 23 |
| Perform a Hot start | F1 D9 06 40 01 00 03 4A 24 |
| Perform a Factory reset | F1 D9 06 09 08 00 02 00 00 00 FF FF FF FF 15 01 |
| UART configures as 115200bps | F1 D9 06 00 08 00 00 00 00 00 00 C2 01 00 D1 E0 |
| UART configures as 9600bps | F1 D9 06 00 08 00 00 00 00 00 80 25 00 00 B3 07 |
| Enable ZDA message | F1 D9 06 01 03 00 F0 07 01 02 1E |
| Disable ZDA message | F1 D9 06 01 03 00 F0 07 00 01 1D |
| Navigate with GPS only | F1 D9 06 0C 04 00 01 00 00 00 17 A0 |
| Navigate with BeiDou system only | F1 D9 06 0C 04 00 04 00 00 00 1A AC |
| Navigate with GPS+ BeiDou system | F1 D9 06 0C 04 00 05 00 00 00 1B B0 |
| Query firmware version[1] | F1 D9 0A 04 00 00 0E 34 |