Rainbow-electronics ATR0625 Manuel d'utilisateur

Features• 16-channel GPS Correlator– 8192 Search Bins with GPS Acquisition Accelerator– Accuracy: 2.5m CEP (Stand-Alone, S/A off)– Time to First Fix:

104925A–GPS–02/06ATR0625 [Preliminary] 3.3.2 Sensitivity Settings3.3.3 Serial I/O ConfigurationThe ATR0625 features a two-stage I/O message and prot

114925A–GPS–02/06 ATR0625 [Preliminary] The following message settings are used in the tables below:The following settings apply if GPSMODE configura

124925A–GPS–02/06ATR0625 [Preliminary] 3.3.4 USB Power ModeFor correct response to the USB host queries, the device has to know its power mode. This

134925A–GPS–02/06 ATR0625 [Preliminary] The Antenna Supervisor Software will be configured as follows:1. Enable Control Signal2. Enable Short Circuit

144925A–GPS–02/06ATR0625 [Preliminary] 3.4 External Connections for a Working GPS SystemFigure 3-2. Example of an External Connection ATR0601ATR0625

154925A–GPS–02/06 ATR0625 [Preliminary] Table 3-15. Recommended Pin Connection Pin Name Recommended External CircuitP0/NANTSHORTInternal pull-down re

164925A–GPS–02/06ATR0625 [Preliminary] 3.4.1 Connecting an Optional Serial EEPROMThe ATR0625 offers the possibility to connect an external serial EE

174925A–GPS–02/06 ATR0625 [Preliminary] 4. Power SupplyThe baseband IC is supplied with four distinct supply voltages:• VDD18, the nominal 1.8V suppl

184925A–GPS–02/06ATR0625 [Preliminary] The baseband IC contains a built in low dropout voltage regulator LDO18. This regulator can be used if the ho

194925A–GPS–02/06 ATR0625 [Preliminary] The USB Transceiver is disabled if VDD_USB < 2.0V. In this case the pins USB_DM and USB_DP are connected t

24925A–GPS–02/06ATR0625 [Preliminary] 1. DescriptionThe GPS baseband processor ATR0625 includes a 16-channel GPS correlator and is based on the ARM7

204925A–GPS–02/06ATR0625 [Preliminary] 5. OscillatorFigure 5-1. Crystal Connection XT_INXT_OUTRTCATR0625 internal32 kHzCrystalOscillator32.768 kHz c

214925A–GPS–02/06 ATR0625 [Preliminary] 7. Electrical Characteristics If no additional information is given in column Test Conditions, the values app

224925A–GPS–02/06ATR0625 [Preliminary] 1.23Input-leakage Current (standard Inputs and I/Os)VDD18 = 1.95V VIL = 0VILEAK–1 +1 µA1.24 Input Capacitance

234925A–GPS–02/06 ATR0625 [Preliminary] 9. ESD SensitivityThe ATR0625 is an ESD sensitive device. The current ESD values are to be defined.Observe pr

244925A–GPS–02/06ATR0625 [Preliminary] 11. LDOBAT and Backup DomainThe LDOBAT is a built in low dropout voltage regulator which provides the supply

254925A–GPS–02/06 ATR0625 [Preliminary] 13. Package QFN56 12. Ordering InformationExtended Type Number Package MPQ RemarksATR0625-PYQW QFN56 20008 mm

Printed on recycled paper.4925A–GPS–02/06© Atmel Corporation 2006. All rights reserved. Atmel®, logo and combinations thereof, Everywhere You Are® an

34925A–GPS–02/06 ATR0625 [Preliminary] Figure 1-1. ATR0625 Block Diagram NSLEEPNSHDNXT_INNRESETTMSTCKTDOTDINTRSTDBG_ENCLK23RF_ONP0/NANTSHORTP15/ANTON

44925A–GPS–02/06ATR0625 [Preliminary] 2. Architectural Overview2.1 DescriptionThe ATR0625 architecture consists of two main buses, the Advanced Syst

54925A–GPS–02/06 ATR0625 [Preliminary] 3. Pin Configuration3.1 PinoutFigure 3-1. Pinout QFN56 (Top View) 42 2911443 2856 15ATR0625Table 3-1. ATR0625

64925A–GPS–02/06ATR0625 [Preliminary] P14 1 I/O Configurable (PD) NAADET1 “0”P15 17 I/O PD ANTONP16 6 I/O Configurable (PU) NEEPROM SIGHI1 NWD_OVFP1

74925A–GPS–02/06 ATR0625 [Preliminary] 3.2 Signal DescriptionTable 3-2. ATR0625 Signal Description Module Name Function Type Active Level CommentEBI

84925A–GPS–02/06ATR0625 [Preliminary] JTAG/ICETMS Test Mode Select Input – Internal pull-up resistorTDI Test Data In Input – Internal pull-up resist

94925A–GPS–02/06 ATR0625 [Preliminary] 3.3 Setting GPSMODE0 to GPSMODE12The start-up configuration of a ROM-based system without external non-volatil