參數(shù)資料
型號: GXB5005
廠商: Sony Corporation
英文描述: SMD Type GPS Receiver Module
中文描述: SMD型GPS接收機模塊
文件頁數(shù): 10/12頁
文件大?。?/td> 131K
代理商: GXB5005
GXB5005
- 10 -
Backup Mode
The backup mode is established by setting all inputs Low except for B.U. (Vbat: 2.6 to 3.0V). In this mode, the
low power consumption can be achieved by stopping all oscillators except for RTC oscillator. Although all
registers are initialized, the SRAM for both of Ephemeris data and Almanac data in backup area are held.
Antenna Sense (Option)
The antenna sensing function detects three kinds of external active antenna connection conditions, open/
normal/short, by using A/D converter incorporated into the CXD2951.
The @ANT command shows the previous antenna sensing result and users would know the three kinds of
conditions. For details, see the CXD2951 Communication Command Specifications.
Threshold Levels
The threshold current Ir is as follows when V
DD
= 3.3V.
open:
Ir < 3.6mA
normal: 3.7mA
Ir
44.0mA
short:
44.0mA < Ir
RTC
V
DD
0
Voltage
(RFIN)
open
normal
short
normal
T + 1
T + 2
T + 3
T + 4
T + 5
T + 6
T + 7
T + 8
T + 9
T + 10 T + 11 T + 12 T + 13 T + 14 T + 15 T + 16 T + 17
(Second)
Approx. 3s
Approx. 3s
Approx.1s
Antenna status detection timing
Antenna
condition
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