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LLCC68 Datasheet(PDF) 49 Page - Semtech Corporation

Part # LLCC68
Description  Long Range, Low Power, sub-GHz RF Transceiver
PDF  106 Pages
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Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

LLCC68 Datasheet(HTML) 49 Page - Semtech Corporation

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LLCC68
Data Sheet
Rev. 1.0
DS.LLCC68.W.APP
July 2019
49 of 106
Semtech
www.semtech.com
8.3.2 Digital Input/Output
Any of the 3 DIOs can be selected as an output interrupt source for the application. When the application receives an
interrupt, it can determine the source by using the command GetIrqStatus(...). The interrupt can then be cleared using the
ClearIrqStatus(...) command. The Pin Description is as follows:
DIO1 is the generic IRQ line, any interrupt can be mapped to DIO1. The complete list of available IRQ can be found in
Section 8.4 "Digital Interface Status versus Chip modes" on page 49.
DIO2 has a double functionality. As DIO1, DIO2 can be used as a generic IRQ line and any IRQ can be routed through this
pin. Also, DIO2 can be configured to drive an RF switch through the use of the command SetDio2AsRfSwitchCtrl(...). In this
mode, DIO2 will be at a logical 1 during Tx and at a logical 0 in any other mode.
DIO3 also has a double functionality and as DIO1 or DIO2, it can be used as a generic IRQ line. Also, DIO3 can be used to
automatically control a TCXO through the command SetDio3AsTCXOCtrl(...). In this case, the device will automatically power
cycle the TCXO when needed.
8.4 Digital Interface Status versus Chip modes
Note:
•
PU = pull up with 50 k
at typical conditions
•
PD = pull down with 50 k
 at typical conditions (the resistor value varies with the supply voltage)
Table 8-3: Digital Pads Configuration for each Chip Mode
Mode
DIO3
DIO2
DIO1
BUSY
MISO
MOSI
SCK
NSS
NRESET
Reset
PD
PD
PD
PU
HIZ
HIZ
HIZ
IN
-
Start-up
HIZ PD
HIZ PD
HIZ PD
HIZ PU
HIZ
HIZ
HIZ
IN
IN PU
Sleep
HIZ PD
HIZ PD
HIZ PD
HIZ PU
HIZ
HIZ
HIZ
IN
IN PU
STBY_RC
OUT
OUT
OUT
OUT
OUT
IN
IN
IN
IN PU
STBY_XOSC
OUT
OUT
OUT
OUT
OUT
IN
IN
IN
IN PU
FS
OUT
OUT
OUT
OUT
OUT
IN
IN
IN
IN PU
RX
OUT
OUT
OUT
OUT
OUT
IN
IN
IN
IN PU
TX
OUT
OUT
OUT
OUT
OUT
IN
IN
IN
IN PU



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