Rainbow-electronics ATR0635P1 Manual do Utilizador

Features• 16-channel GPS Correlator – 8192 Search Bins with GPS Acquisition Accelerator– Accuracy: 2.5m CEP (2D, Stand Alone)– Time to First Fix: 34s

104979D–GPS–06/08ATR0635P1Boot SectionC6 BOOT_MODE DIGITAL IN - Leave open, internal pull downReset A7 NRESET DIGITAL IN Low Reset input; open drai

114979D–GPS–06/08ATR0635P1Active Antenna SupervisionC8 NANTSHORT DIGITAL IN Low Active antenna short detection InputG5, G6 NAADET0/NAADET1DIGITAL IN

124979D–GPS–06/08ATR0635P13.3 Setting GPSMODE0 to GPSMODE12The start-up configuration of this ROM-based system without external non-volatile memory is

134979D–GPS–06/08ATR0635P13.3.2 Sensitivity SettingsFor all GPS receivers the sensitivity depends on the integration time of the GPS signals. There-fo

144979D–GPS–06/08ATR0635P1Both USART ports accept input messages in all three supported protocols (NMEA, RTCM andUBX) at the configured baud rate. Inp

154979D–GPS–06/08ATR0635P1The following settings apply if GPSMODE configuration is not enabled, that is, GPSMODE = 0(ROM defaults):3.4.1 USB Power Mod

164979D–GPS–06/08ATR0635P1The Antenna Supervisor Software will be configured as follows:1. Enable Control Signal2. Enable Short Circuit Detection (pow

174979D–GPS–06/08ATR0635P13.4.3 External Connections for a Working GPS SystemFigure 3-2. Example of an External Connection (ATR0635P1) ATR0635P1see Ta

184979D–GPS–06/08ATR0635P1Table 3-15. Recommended Pin ConnectionsPin Name Recommended External CircuitP0/NANTSHORT Internal pull-down resistor; leave

194979D–GPS–06/08ATR0635P13.5 Connecting an Optional Serial EEPROMThe ATR0635P1 offers the possibility of connecting an external serial EEPROM. The in

24979D–GPS–06/08ATR0635P11. DescriptionThe ATR0635P1 is a low-power, single-chip GPS receiver, especially designed to meet therequirements of mobile a

204979D–GPS–06/08ATR0635P14. Power SupplyThe ATR0635P1 is supplied with six distinct supply voltages:• The power supplies for the RF part (VCC1, VCC2,

214979D–GPS–06/08ATR0635P1Figure 4-1. Connecting Example: Separate Power Supplies for RF and Digital Part Using the Internal LDOs The ATR0635P1 contai

224979D–GPS–06/08ATR0635P1The RTC section will be initialized properly if VDD18 is supplied first to the ATR0635P1. If VBATis applied first, the curre

234979D–GPS–06/08ATR0635P1Figure 4-3. Connecting Example: Separate Power Supplies for RF and Digital Part Using 1.8V from Host System ATR0635P1 intern

244979D–GPS–06/08ATR0635P1Figure 4-4. Connecting Example: Power Supply from USB Using the Internal LDOs ATR0635P1 internalVDDUSB1.5V to 3.6Vldooutldoe

254979D–GPS–06/08ATR0635P15. CrystalsThe ATR0635P1 requires a GPS TCXO. The reference frequency is 23.104 MHz. By connectingan optional RTC crystal, d

264979D–GPS–06/08ATR0635P15.2 RTC OscillatorFigure 5-3. Crystal Connection Table 5-1. Specification of GPS TCXOs Appropriate for the Application Examp

274979D–GPS–06/08ATR0635P17. HandlingThe ATR0635P1 is an ESD-sensitive device. The current ESD values are to be defined.Observe proper precautions for

284979D–GPS–06/08ATR0635P19. Operating RangeParameters Pins Symbol Min Typ Max UnitAnalog supply voltage RF VCC1, VCC2, VBP VCC2.70 3.30 VDigital supp

294979D–GPS–06/08ATR0635P12.4 AGC cut-off frequency Cext = open A4 f3dB_AGC250 kHz D2.5 AGC cut-off frequency Cext = 100 pF A4 f3dB_AGC33 kHz D3PMSS3.

34979D–GPS–06/08ATR0635P12. Architectural Overview2.1 Block DiagramFigure 2-1. ATR0635P1 Block Diagram NSLEEPNSHDNXT_INTMSTCKTDOTDINTRSTDBG_ENP25/NAAD

304979D–GPS–06/08ATR0635P16.7 Schmitt trigger hysteresis VDD18 = 1.65V to 1.95V CLK23 Vhyst,CLK230.2 0.55 V C6.8Schmitt trigger threshold risingVDD18

314979D–GPS–06/08ATR0635P16.26Input pull-up resistor NRESETA7 RPU0.5 1.8 kΩ A6.27Input pull-up resistors TCK, TDI, TMSG9, H10, G10RPU718kΩ A6.28Input

324979D–GPS–06/08ATR0635P111. Power ConsumptionTable 11-1. Leakage CurrentsParameter Conditions Typ. Max. Unit Type*Leakage current VDD18VDD18 = 1.95V

334979D–GPS–06/08ATR0635P113. Package Information 12. Ordering InformationExtended Type Number Package MPQ RemarksATR0635P1-7KQY BGA96 30007mm× 10 mm,

344979D–GPS–06/08ATR0635P114. Revision HistoryPlease note that the following page numbers referred to in this section refer to the specific revision m

4979D–GPS–06/08Headquarters InternationalAtmel Corporation2325 Orchard ParkwaySan Jose, CA 95131USATel: 1(408) 441-0311Fax: 1(408) 487-2600Atmel AsiaR

44979D–GPS–06/08ATR0635P12.2 General DescriptionThe ATR0635P1 has been designed especially for mobile applications. It provides high isolationbetween

54979D–GPS–06/08ATR0635P12.7 Analog-to-digital Converter The analog-to-digital converter stage has a total resolution of 1.5 bits. It comprises balanc

64979D–GPS–06/08ATR0635P13. Pin Configuration3.1 PinoutFigure 3-1. Pinning BGA96 (Top View) Table 3-1. ATR0635P1 Pinout Pin Name BGA 96 Pin TypePull R

74979D–GPS–06/08ATR0635P1GNDA B4 SupplyGNDA D2 SupplyGNDA E1 SupplyGNDA E2 SupplyGNDA E3 SupplyGNDA F1 SupplyGNDA F2 SupplyGNDA F3 SupplyGNDA G1 Suppl

84979D–GPS–06/08ATR0635P1P20 G7 Digital I/O Configurable (PD) TIMEPULSE SCK2 SCK2P21 E6 Digital I/O Configurable (PU) TXD2 TXD2P22 D10 Digital I/O PU

94979D–GPS–06/08ATR0635P13.2 Signal DescriptionVDD_USB(3)A10 SupplyVDD18 H9 SupplyVDD18 G11 SupplyVDD18 F12 SupplyVDD18 B9 SupplyVDD18 E5 SupplyVDDIO(