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SI4313 Datasheet(PDF) 16 Page - Silicon Laboratories

Part # SI4313
Description  Si4313 LOW-COST ISM RECEIVER
PDF  52 Pages
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Manufacturer  SILABS [Silicon Laboratories]
Direct Link  http://www.silabs.com
Logo SILABS - Silicon Laboratories

SI4313 Datasheet(HTML) 16 Page - Silicon Laboratories

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Si4313-B1
16
Rev. 0.5
2.2. Operating Modes
The Si4313 provides several operating modes, which can be used to optimize the power consumption of the
receive application. Depending upon the system communication protocol, an optimal trade-off between radio wake
time and power consumption can be achieved.
In general, any given operating mode may be classified as an Active mode or a Power Saving mode. Table 8
indicates which blocks are enabled (active) in each corresponding mode. With the exception of the Shutdown
mode, all can be dynamically selected by sending the appropriate commands over the SPI. An "X" in any table cell
means that the block can be independently programmed to be either ON or OFF (in that given operating mode)
without noticeably impacting current consumption. The SPI block includes the SPI interface hardware and the
register space. The 32 kHz OSC circuit block includes the 32.768 kHz RC oscillator or 32.768 kHz crystal oscillator
and wake-up timer. AUX (Auxiliary Blocks) includes the temperature sensor and low-battery detector.
Table 8. Operating Modes
Mode
Name
Circuit Blocks
Digital
LDC
SPI
32 kHz
OSC
AUX
30 MHz
XTAL
PLL
RX
IVDD
Shutdown
OFF
register
contents
lost
OFFOFF
OFFOFF
OFF
OFF
15 nA
Standby
ON
register
contents
retained
OFFOFF
OFFOFF
OFF
OFF
450 nA
Sleep
ON
ON
X
OFF
OFF
OFF
1 µA
Sensor
ON
X
ON
OFF
OFF
OFF
1 µA
Ready
ON
X
X
ON
OFF
OFF
800 µA
Tuning
ON
X
X
ON
ON
OFF
8.5 mA
Receive
ON
X
X
ON
ON
ON
18.5 mA



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