SX1239IMLTRT Semtech, SX1239IMLTRT Datasheet - Page 61

• Manufacturer Part Number: SX1239IMLTRT
• Description: IC, RF RECEIVER, 1.02GHz, QFN-24
• Manufacturer: Semtech

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

Rev 3 - Jan 2011
RegIrqFlags2
(0x28)
RegRssiThresh
(0x29)
RegRxTimeout1
(0x2A)
RegRxTimeout2
(0x2B)
ADVANCED COMMUNICATIONS & SENSING
7-0
7-0
7-0
7
6
5
4
3
2
1
0
FifoFull
FifoNotEmpty
FifoLevel
FifoOverrun
-
PayloadReady
CrcOk
LowBat
RssiThreshold
TimeoutRxStart
TimeoutRssiThresh
rwc
rwc
rw
rw
rw
r
r
r
r
r
r
Page 61
0xE4
0x00
0x00
0
0
0
0
0
0
0
*
-
Set when FIFO contains at least one byte, else cleared
Set when FIFO overrun occurs. (except in Sleep mode)
Set in Rx when the payload is ready (i.e. last byte
Set in Rx when the CRC of the payload is Ok. Cleared
Set when FIFO is full (i.e. contains 66 bytes), else
cleared.
Set when the number of bytes in the FIFO strictly exceeds
FifoThreshold, else cleared.
Flag(s) and FIFO are cleared when this bit is set. The
FIFO then becomes immediately available for the next
reception.
unused
received and CRC, if enabled and CrcAutoClearOff is
cleared, is Ok). Cleared when FIFO is empty.
when FIFO is empty.
Set when the battery voltage drops below the Low Battery
threshold. Cleared only when set by the user.
RSSI trigger level for Rssi interrupt :
Timeout interrupt is generated TimeoutRxStart*16*T
after switching to Rx mode if Rssi interrupt doesn’t occur
(i.e. RssiValue > RssiThreshold)
0x00: TimeoutRxStart is disabled
Timeout interrupt is generated TimeoutRssiThresh*16*T
after Rssi interrupt if PayloadReady interrupt doesn’t
occur.
0x00: TimeoutRssiThresh is disabled
- RssiThreshold / 2 [dBm]
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