- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄295113 > ATR0621N-7FQY (ATMEL CORP) TELECOM, CELLULAR, BASEBAND CIRCUIT, PBGA100 PDF資料下載
參數(shù)資料
| 型號(hào)： | ATR0621N-7FQY |
| 廠商： | ATMEL CORP |
| 元件分類： | 無繩電話/電話 |
| 英文描述： | TELECOM, CELLULAR, BASEBAND CIRCUIT, PBGA100 |
| 封裝： | 9 X 9 MM, 0.80 MM PITCH, ROHS COMPLIANT, LFBGA-100 |
| 文件頁數(shù)： | 4/31頁 |
| 文件大小： | 477K |
| 代理商： | ATR0621N-7FQY |
第1頁第2頁第3頁當(dāng)前第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁
12
4890C–GPS–10/06
ATR0621
3.3.2
Sensitivity Settings
For all GPS receivers the sensitivity depends on the integration time of the GPS signals. There-
fore there is a trade-off between sensitivity and the time to detect the GPS signal (Time to first
fix). The three modes, “Fast Acquisition”, “Normal” and “High Sensitivity”, have a fixed integra-
tion time. The “Normal” mode, recommended for the most applications, is a trade off between
the sensitivity and TTFF. The “Fast Acquisition” mode is optimized for fast acquisition, at the
cost of a lower sensitivity. The “High Sensitivity” mode is optimized for higher sensitivity, at the
cost of longer TTFF. The “Auto” mode adjusts the integration time (sensitivity) automatically
according to the measured signal levels. That means the receiver with this setting has a fast
TTFF at strong signals, a high sensitivity to acquire weak signals but some times at medium sig-
nal level a higher TTFF as the “Normal” mode. These sensitivity settings affect only the startup
performance not the tracking performance.
3.3.3
Serial I/O Configuration
The ATR0621 features a two-stage I/O message and protocol selection procedure for the two
available serial ports. At the first stage, a certain protocol can be enabled or disabled for a given
USART port or the USB port. Selectable protocols are RTCM, NMEA and UBX. At the second
stage, messages can be enabled or disabled for each enabled protocol on each port. In all con-
figurations discussed below, all protocols are enabled on all ports. But output messages are
enabled in a way that ports appear to communicate at only one protocol. However, each port will
accept any input message in any of the three implemented protocols.
Table 3-5.
GPS Sensitivity Settings
GPSMODE3
(Fixed PU)
GPSMODE2
(Reset = PU) Description
0(1)
0
Auto mode
0(1)
1(2)
Fast mode
1(2)
0
Normal mode (Default ROM value)
1(2)
High sensitivity
Notes:
1. Increased back-up current
2. Leave open
Table 3-6.
Serial I/O Configuration
GPSMODE12
(Reset = PU)
GPSMODE6
(Reset = PU)
GPSMODE5
(Reset = PD)
USART1/USB
(Output Protocol/
Baud Rate (kBaud))
USART2
(Output Protocol/
Baud Rate (kBaud)) Messages(1) Information Messages
00
0(2)
UBX/57.6
NMEA/19.2
High
User, Notice, Warning, Error
0
1
UBX/38.4
NMEA/9.6
Medium
User, Notice, Warning, Error
01(2)
0(2)
UBX/19.2
NMEA/4.8
Low
User, Notice, Warning, Error
01(2)
1
–/Auto
Off
None
1(2)
00(2)
NMEA/19.2
UBX/57.6
High
User, Notice, Warning, Error
1(2)
0
1
NMEA/4.8
UBX/19.2
Low
User, Notice, Warning, Error
1(2)
0(2)
NMEA/9.6
UBX/38.4
Medium
User, Notice, Warning, Error
1(2)
1
UBX/115.2
NMEA/19.2
Debug
All
Notes:
1. See Table 3-7 to Table 3-10 on page 13, the messages are described in the ANTARIS4 protocol specification
2. Leave open
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ATR0621P1-7FQY | TELECOM, CELLULAR, BASEBAND CIRCUIT, PBGA100 |
| ATR2805SF/CH | 1-OUTPUT 25 W DC-DC REG PWR SUPPLY MODULE |
| ATS650LSH-I2 | SPECIALTY ANALOG CIRCUIT |
| ATT-0293-83-SMA-02 | 0 MHz - 4000 MHz RF/MICROWAVE FIXED ATTENUATOR |
| ATT-0640-10-29M-02 | 0 MHz - 40000 MHz RF/MICROWAVE FIXED ATTENUATOR |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ATR0621P_08 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:GPS Baseband GPS Baseband |
| ATR0621P1 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:GPS Baseband Processor |
| ATR0621P1-7FHW | 制造商:Atmel Corporation 功能描述: |
| ATR0621P1-7FQY | 制造商:Atmel Corporation 功能描述: |
| ATR0621P-7FHW | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:GPS Baseband GPS Baseband |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。