Data Sheet

LJ1269HC
Rev1.0 Page 41 Web: www.ljelect.com
Some typical examples of AutoModes usage are described below:
 Automatic transmission (AutoTx) : Mode = Sleep, IntermediateMode = Tx, EnterCondition = FifoLevel, ExitCondition =
PacketSent
 Automatic reception (AutoRx) : Mode = Rx, IntermediateMode = Sleep, EnterCondition = CrcOk, ExitCondition = falling
edge of FifoNotEmpty
 Automatic reception of acknowledge (AutoRxAck): Mode = Tx, IntermediateMode = Rx, EnterCondition = PacketSent,
ExitCondition = CrcOk
 ...
5. Data Processing
5.1. Overview
5.1.1. Block Diagram
Figure below illustrates the LJ1269HC data processing circuit. Its role is to interface the data to/from the modulator/
demodulator and the uC access points (SPI and DIO pins). It also controls all the configuration registers.
The circuit contains several control blocks which are described in the following paragraphs.
Figure 23. LJ1269HC Data Processing Conceptual View
The LJ1269HC implements several data operation modes, each with their own data path through the data processing section.
Depending on the data operation mode selected, some control blocks are active whilst others remain disabled.
5.1.2. Data Operation Modes
The LJ1269HC has two different data operation modes selectable by the user:
 Continuous mode: each bit transmitted or received is accessed in real time at the DIO2/DATA pin. This mode may be used
if adequate external signal processing is available.
Sub GHz FSK/OOK Transceiver Module DATASHEET