SX1239IMLTRT Semtech, SX1239IMLTRT Datasheet - Page 43
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SX1239IMLTRT
Manufacturer Part Number
SX1239IMLTRT
Description
IC, RF RECEIVER, 1.02GHz, QFN-24
Manufacturer
Semtech
Datasheet
1.SX1239IMLTRT.pdf
(73 pages)
Specifications of SX1239IMLTRT
Applications
Wireless Sensor Networks, Automated Meter Reading, Home And Building Automation
Receiving Current
16mA
Data Rate
300Kbps
Modulation Type
FSK, OOK
Sensitivity Dbm
-120dBm
Rohs Compliant
Yes
Rf Ic Case Style
QFN
No. Of Pins
24
Sensitivity (dbm)
-120dBm
Supply Voltage Range
1.8V To 3.6V
Operating Temperature Range
-40°C To +85°C
Lead Free Status / Rohs Status
Supplier Unconfirmed
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5.4. Continuous Mode
5.4.1. General Description
As illustrated in Figure 25, in Continuous mode the NRZ data from the demodulator is directly accessed by the uC on the
DIO2/DATA pin. The FIFO and packet handler are thus inactive.
5.4.2. Rx Processing
If the bit synchronizer is disabled, the raw demodulator output is made directly available on DATA pin and no DCLK signal
is provided.
Conversely, if the bit synchronizer is enabled, synchronous cleaned data and clock are made available respectively on
DIO2/DATA and DIO1/DCLK pins. DATA is sampled on the rising edge of DCLK and updated on the falling edge as
illustrated below.
Note
Rev 3 - Jan 2011
ADVANCED COMMUNICATIONS & SENSING
Data
in Continuous mode it is always recommended to enable the bit synchronizer to clean the DATA signal even if the
DCLK signal is not used by the uC (bit synchronizer is automatically enabled in Packet mode).
Rx
Rx
DATA (NRZ)
DCLK
SYNC
RECOG.
Figure 25. Continuous Mode Conceptual View
Figure 26. Rx Processing in Continuous Mode
CONTROL
Page 43
SPI
DATASHEET
MISO
www.semtech.com
SCK
MOSI
NSS
SX1239
DIO0
DIO1/DCLK
DIO2/DATA
DIO3
DIO4
DIO5
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