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STA5620 Datasheet(PDF) 20 Page - STMicroelectronics

Part # STA5620
Description  Fully integrated RF front-end for GPS
PDF  29 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STA5620 Datasheet(HTML) 20 Page - STMicroelectronics

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Registers
STA5620
20/29
7.7
Radio trimming register
7.8
Receiver chain register (enable)
Table 12.
Radio trimming register
Register
address
Name
Bit
Default value
MODE = 0
Default value
MODE = 1
Description
0x52
CPI
XXXX XX yy [0:1]
11
11
CPI = 00
50µA charge pump current
CPI = 01
100µA charge pump current
CPI = 10
150µA charge pump current
CPI = 11
200µA charge pump current
LFC
XXXy yyXX [2:4]
110
110
Loop filter control
Table 13.
Receiver chain register (enable)
Register
address
Name
Bit
Default value
MODE = 0
Default value
MODE = 1
Description
0x60
RFE
XXXX XXX y [0]
0
0
RFE = 0
The RF chain is controlled by
RF_EN pin
RFE = 1
The RF chain is ON



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