CXD2956AGL-1 Lsi Datasheet

CXD2956AGL-1 Datasheet, PDF, Equivalent


Part Number

CXD2956AGL-1

Description

GPS Baseband Lsi

Manufacture

Sony Electronics

Total Page 18 Pages
Datasheet
Download CXD2956AGL-1 Datasheet


CXD2956AGL-1
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GPS Baseband LSI
CXD2956AGL-1
Description
The CXD2956AGL-1 is a dedicated LSI for the GPS
(Global Positioning System), satellite-based location
measurement system.
Compared with conventional methods, position
detection time and sensitivity are substantially
improved with the use of an advanced signal
processing scheme.
Although package sizes differ, the CXD2956AGL-1
has realized compatibility with a foot pattern to the
CXD2963GH.
This LSI used together with the Sony GPS RF down
converter IC enables the configuration of a 2-chip
system capable of measuring its position anywhere
on the globe. The CXD2956AGL-1 is ideal for use in
automotive, cellular handset, handheld navigation,
mobile computing and other location-based applications.
Features
12-channel GPS receiver capable of simultaneously
receiving 12 satellites
Reception frequency: 1575.42MHz
(L1 band, CA code)
Reference clock (TCXO) frequency:
18.414MHz (GPS, Sony compatible),
32-bit RISC CPU (ARM7TDMI)
288K-byte Program ROM
72K-byte Data RAM
Power is supplied only to 8K-byte Data RAM while
in backup mode.
System power management
1-channel UART
Internal RTC (Real Time Clock)
10-bit successive approximation system A/D
converter
All-in-view positioning
Communication format: Supports NMEA-0183
Supports DGPS (optional)
Conforms to RTCM SC-104 Ver. 2.1 and DARC
1 PPS output
Supports assisted-GPS for cellular (optional)
183 pin VFLGA (Plastic)
Absolute Maximum Ratings
Supply voltage I/O IOVDD
Supply voltage core CVDD
Input voltage
VI
Output voltage
VO
Operating temperature Topr
Storage temperature Tstg
–0.5 to +4.6
–0.5 to +2.5
–0.5 to +6
–0.5 to +6
–40 to +85
–50 to +150
V
V
V
V
°C
°C
Recommended Operating Conditions
Supply voltage I/O IOVDD 3.0 to 3.6
Under operation with internal ROM, using no
external expansion bus: IOVDD 2.6 to 3.6V
Under operation in backup mode:
BKUPIOVDD 2.5 (Min.) V
Supply voltage core CVDD 1.62 to 1.98
Operating temperature Topr –40 to +85
V
V
°C
Input/Output Pin Capacitance
Input capacitance
CIN
Output capacitance COUT
I/O capacitance
CI/O
9 (Max.)
11 (Max.)
11 (Max.)
pF
pF
pF
Structure
Silicon gate CMOS IC
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
–1–
E04729-PS

CXD2956AGL-1
www.DataSheet4U.com
CXD2956AGL-1
Performance
Tracking sensitivity: –152dBm (average) or less
Acquisition sensitivity: –139dBm (average) or less in normal mode
–150dBm (average) or less in high sensitivity mode
Reference data using the Sony's reference board when using both an antenna of 25dBi gain and a RF
amplifier with NF 2dB, 25dB gain.
TTFF (Time to First Fix):
Time until initial position measurement after power-on with the following conditions:
Cold Start (without both ephemeris and almanac time): 50s (average) / 60s (95% possibility)
Warm Start (without ephemeris but with almanac time): 35s (average) / 40s (95% possibility)
Hot Start (with both ephemeris and almanac time): 2s (minimum) / 6s (95% possibility)
Reference data with elevation angle of 5° or more and no interception environment with satellite powers
–130dBm. (Not in high sensitivity mode)
Note) "95% possibility" means "position time with 95% possibility".
Positioning accuracy:
2DRMS: approx. 5m
Reference data with elevation angle of 5° or more and no interception environment with satellite powers
–130dBm.
Measurement data update time: 1s
Current consumption:
40mW (average) while position calculating with tracking satellites in low power mode
90mW (average) while position calculating with acquiring and tracking satellites
Reference data using the Sony's reference board when the reference clock input is 18.414MHz, and its
amplitude is 3.3V swing.
1PPS output
1µs or less precision, 1PPS outputs from ECLKOUT (Pin 97).
Note) These values are not guaranteed, depending on the conditions.
–2–


Features www.DataSheet4U.com CXD2956AGL-1 GPS Ba seband LSI Description The CXD2956AGL-1 is a dedicated LSI for the GPS (Global Positioning System), satellite-based l ocation measurement system. Compared wi th conventional methods, position detec tion time and sensitivity are substanti ally improved with the use of an advanc ed signal processing scheme. Although p ackage sizes differ, the CXD2956AGL-1 h as realized compatibility with a foot p attern to the CXD2963GH. This LSI used together with the Sony GPS RF down conv erter IC enables the configuration of a 2-chip system capable of measuring its position anywhere on the globe. The CX D2956AGL-1 is ideal for use in automoti ve, cellular handset, handheld navigati on, mobile computing and other location -based applications. Features • 12-ch annel GPS receiver capable of simultane ously receiving 12 satellites • Recep tion frequency: 1575.42MHz (L1 band, CA code) • Reference clock (TCXO) frequ ency: 18.414MHz (GPS, Sony compatible), • 32-bit RISC CPU (ARM7TDMI) .
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