REB-3300 Operational Manual 
 
 
 
 
 
 
REB-3300 Operational Manual 
Version 1.0   
2004/11/24 
 
 
 
 
This document contains information highly confidential to RoyalTek Company 
LTD (RoyalTek). It is provided for the sole purpose of the business discussions 
between supplier and RoyalTek and is covered under the terms of the 
applicable Non-Disclosure Agreements. Disclosure of this information to other 
parties is prohibited without the written consent of RoyalTek. 
 
 
Prepared by RoyalTek Company LTD. 
 
 
 
8F,256 Yang Guang Street, Neihu Chiu,Taipei, Taiwan, R.O.C. 
TEL: 886-2-77215000 
FAX: 886-2-77215666 
http://www.royaltek.com/contact 
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REB-3300 Operational Manual 
 
 
RoyalTek GPS Module: REB-3300 Operational Manual 
 
INTRODUCTION....................................................................................................................  3 
PRODUCT FEATURES ....................................................................................................….  3 
PRODUCT APPLICATIONS ..................................................................................................  3 
PRODUCT PICTURE................................................................................................................ 4 
REB-3300 SERIES SYSTEM BLOCK DIAGRAM..................................................................  5 
REB-3300 TECHNIQUE SPECIFICATION..........................................................................…. 6 
APPLICATION CIRCUIT .....................................................................................………….. 
7 
RECOMMENDED LAYOUT PAD ............................................................................………….. 8 
GPS ANTENNA SPECIFICATION .......................................................................................….9 
MECHANICAL LAYOUT .......................................................................................……….…...10 
HARDWARE INTERFACE …….............................................. ................................................11 
DEFINITION OF PIN ASSIGNMENT ........................................................ ......................……12 
TEST SOFTWARE SPECIFICATION ..............……......................................... ......................14 
SOFTWARE INTERFACE................................................................................…… ……….…15 
NMEA V3.0 PROTOCOL..................................................................................…… ……….…15 
GPS RECEIVER USER’S TIPS......................................................................................……..20 
MTBF ESTIMATION………………….............................................. .......................……......… 21 
PACKAGE SPECIFICATION AND ORDER INFORMATION................. ................……......…21 
CONTACT INFORMATION SECTION....................................................................……......…21 
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REB-3300 Operational Manual 
 
RoyalTek GPS Module: REB-3300 Operational Manual 
Introduction 
RoyalTek  REB-3300  low  power  and  small  form  factor  board  is  the  newest  generation  of 
RoyalTek  GPS  Receiver.  The  GPS  receiver  is  powered  by  SiRFStarIIe/LP  technology  with 
XTrac  2.0  firmware  and  RoyalTek  proprietary  navigation  algorithm  that  providing  you  more 
stable navigation data. The smallest form factor and miniature design is the best choice to be 
embedded in a portable device like PDA, personal position and navigation like personal locator, 
speed  camera  detector  and  vehicle  locator.  The  excellent  sensitivity  of  REB-3300  gets  the 
great performance when going though the urban canyon and foliage. 
 
Product Features 
  12 parallel channels 
  Operable from 3.3V/65mA continuous mode. 
  SMT type with stamp holes 
  Pin reserved for Backup battery and RF connector 
  TCXO design 
  7 I/O lines(GPIO) available to connect 
  0.1 second reacquisition time 
  Small form factor. 
  NMEA-0183 compliant protocol/custom protocol. 
  Enhanced algorithm for navigation stability. 
  Excellent sensitive for urban canyon and foliage environments. 
  SBAS (WAAS, EGNOS and MSAS) support 
  Auto recovery while RTC crashes 
  Trickle power supported 
  ARM 7 CPU core accessible 
  4/8/16Mbits Flash Memory 
 
Optional 
  SiRFStarII normal version firmware 
  SiRFStarII enhance(ES) version firmware 
  XTrac 2.0 high sensitivity(HS) version firmware 
 
Product applications 
  Automotive navigation 
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REB-3300 Operational Manual 
 
  Personal positioning and navigation 
  Marine navigation 
  Timing application 
 
Product Picture 
REB-3300 
Pin16 
Pin 15 
Pin 32 
Pin 1
 
 
 
REB-3300 Interface Board 
RoyalTek Evaluation Kit REV-2000 for REB-3300 
(Please refer to RoyalTek Evaluation Kit REV-2000 for REB-3300 Operational Manual 
for more information) 
 
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REB-3300 Operational Manual 
 
REB-3300 Series System Block Diagram 
REB-3300  engine  board  consists  of  SiRF  star  IIe/LP  chipset  technology,  4/8/16Mbits  flash 
memory, and proprietary software. The system is described as follows. 
a.  Support external active patch antenna 
b.  Support 4/8/16 Mega bits flash memory 
c.  30 I/O pins 
 
 
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REB-3300 Operational Manual 
 
REB-3300 Technique Specification 
ImpedanceG50[ 
No 
Function 
Specification 
GPS receiver 
Frequency 
1  Chipset 
2 
3  Code 
4  Channels 
5 
Sensitivity (Tracking) 
6 
7 
Sensitivity (Cold Start) 
Sensitivity (Warm Start) 
8  Cold start 
9  Warm start 
10  Hot start 
11  Reacquisition 
12  Clock drift 
13  Clock offset 
14  Position accuracy 
15  Maximum altitude 
16  Maximum velocity 
17  Trickle power mode   
18  Update rate 
19  Navigation filter 
20  Testability 
22  Protocol setup 
23  DGPS 
Interface 
24 
LNA 
 
25 
I/O Pin 
  37  dB-Hz  when  external  power  = 
SiRF GSP 2e/LP, GRF 2i/LP 
L1 1575.42MHz. 
C.A. Code. 
12. 
It  shall  show  C/No 
-130dBm. 
28 dBHz (SSII normal version software) 
28 dBHz (SSII ES version software) 
16 dBHz (SSII XTrac version software) 
36 dBHz (SSII normal version software) 
33 dBHz (SSII ES version software) 
32 dBHz (SSII XTrac version software) 
36 dBHz (SSII normal version software) 
33 dBHz (SSII ES version software) 
28 dBHz (SSII XTrac version software) 
45sec typical (SSII normal version software, Open sky) 
75sec typical (SSII ES version software, Open sky) 
45sec typical (SSII XTrac version software, Open sky) 
38sec typical (SSII normal version software, Open sky) 
40sec typical (SSII ES version software, Open sky) 
35sec typical (SSII XTrac version software, Open sky) 
8 sec. typical (SSII normal version software, Open sky) 
18 sec. typical (SSII ES version software, Open sky) 
4 sec. typical (SSII XTrac version software, Open sky) 
0.1sec typical 
  200Hz in 60 sec 
90000Hz Clock offset 100000Hz 
25m CEP. 
18000 m 
514 m/s 
Duty cycle 
  34%. (Variable) 
Default: disable(option: enable) 
Continuous operation: 1Hz 
It shall freeze the navigation update when speed 
2.5 km/hr 
It shall be able to be tested by SiRF test II and single channel 
simulator. 
It shall store the protocol setup in the SRAM memory. 
1.WAAS, EGNOS 
2.RTCM protocol 
   
On board LNA : 
a. Gain 
b. N.F. < 2dB 
14dB 
30pin stamp holes 
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REB-3300 Operational Manual 
 
3.5g 
 
Mechanical requirements 
26  Weight 
Power consumption 
27  Vcc 
28  Current 
29  Trickle power mode   
30  Power down mode current 
Environment 
31  Operating temperature 
32  Humidity 
33 
Interface Protocol 
DC 3.3 ±5% 
REB3300: 
Current 
Average current 
1. It means that the GPS receiver is in power down mode. 
2. Current 
65mA@3.3V typical (w/o ext. antenna) 
  65mA. (IO float) 
800gA. 
-40 ~ 85J 
95% 
1. NMEA 0183 ver 3.0, GGA, GSA, RMC and GSV once per 
2. SiRF Protocol 
3. 4800 bps, 8 data bits, no parity, 1 stop bits 
 
Application Circuit 
 
(1)  Ground Planes: 
REB-3300 GPS receiver needs two different ground planes. The GND_A pin(11B
12B13B14B15B16B18)    shall be connect to analog ground. 
The GND pin(2B10B30) connect to digital ground. 
(2)  Serial Interface: 
The Serial interface pin(RXABTX1BTXBBRXB) is recommended to pull up(10K[). 
It can increase the stability of serial data. 
(3)  Backup Battery: 
It’s recommended to connect a backup battery to V_BAT. 
In order to enable the warm and hot start features of the GPS receiver. If you don’t 
intend to use a backup battery, connect this pin to GND or open. 
If you use backup battery, shall need to add a bypassing capacitor (10uF) at V_bat 
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REB-3300 Operational Manual 
 
trace. It can reduce noise and increase the stability. 
(4)  Antenna: 
Connecting to the antenna has to be routed on the PCB. The transmission line must 
to controlled impedance to connect RF_IN to the antenna or antenna connector of 
your choice. 
(5)  Active antenna bias voltage: 
The Vcc_RF pin(pin 20) is provide voltage 3.0V. If you use active antenna, you can 
connect this pin to V_ANT_IN pin (pin 19) to provide bias voltage of active antenna. 
The bias voltage will through RF_IN pin to provide active antenna bias voltage from 
Vcc_RF pin. 
If your bias voltage of active antenna isn’t 3.0V, you can input bias voltage to 
V_ANT_IN pin(pin 19).And input bias voltage of you need. It can open if you use 
passive antenna. The input bias voltage will through RF_IN pin to provide active 
antenna bias voltage from V_ANT_IN pin. 
The maximum power consumption of active antenna is about 100mW 
(6)  Power: 
Connect Vcc pin to DC 3.3V.The power supply must add bypassing capacitor(10uF 
and 1uF).It can reduce the Noise from power supply and increase power stability.   
 
Recommended layout PAD 
 
8