LEA-4A u-blox, LEA-4A Datasheet - Page 4

• Manufacturer Part Number: LEA-4A
• Description: Antaris 4 Gps Modules? Data Sheet
• Manufacturer: u-blox

1.3 Block Diagram
Figure 1: Hardware Block Schematic
1.4 Operating Modes
The ANTARIS
Table 2: Operating Modes
For more information see the ANTARIS
1.5 Assisted GPS (A-GPS)
The ANTARIS
computation in the GPS receiver. In addition, timing receivers (such as the LEA-4T) support MS assisted (output
of raw tracking information for position computation by the service provider). Supply of aiding information like
ephemeris, almanac, rough last position and time and satellite status and an optional time synchronization signal
will reduce time to first fix significantly. All LEA-4x modules support the u-blox AssistNow Online
The LEA-4H and LEA-4P are also AssistNow Offline
LEA-4A, LEA-4H, LEA-4M, LEA-4P, LEA-4R, LEA-4S, LEA-4T - Data Sheet
GPS.G4-MS4-06143-1
Reset_N (O.D. @ 1.8 V)
Operating Modes
Continuous Tracking Mode (CTM)
Power Saving Modes
GPSMODE Pins
GPIO Pins or
AADET_N
EXTINT0
RF_in
V_ant
VBAT
GND
GND
®
®
4 GPS Technology supports the following Operating Modes:
4 GPS engine supports Mobile Station (MS) based A-GPS for accelerated acquisition and position
(optional)
Memory
FLASH
[16 Bit]
4Mbit
min.
I/Os
P15
Address Bus
Data Bus
ATR0610
®
4 System Integration Manual [1].
ATR062x
Description
In this mode, the Autonomous Power Management (APM)
automatically optimizes power consumption. It powers off parts of
the receiver when they are not used. Also, the CPU speed is
reduced when the CPU workload is low.
A configurable power saving mode is available where the GPS is put
into sleep mode and activated up on a selectable time interval or
upon external request (signal activity on serial port or EXTINT input).
This mode is ideally suited in applications with stringent power
budget requirements in mobile and battery operated end products.
RESET
[32 Bit]
128 kB
SRAM
P0
®
ready.
SAW-Filter
288 kB
[32 Bit]
ARM7
ROM
CPU
RF_ON
RAM (
Channels
backed
Battery
[32 Bit]
ATR0601
4 kB
GPS
BBR
A
)
D
VBAT
LDO
LDO
1.8V
RTC
XTO
SLEEP_N
32.768 kHz
23.104 MHz
I/Os
your position is our focus
RxD/TxD, USB
SPI
Boot_int
GND
VCC
®
A-GPS service.
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