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
Weight and size	5.3g, 50.95*30*3.5mm

_[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