SX1233IMLTRT Semtech, SX1233IMLTRT Datasheet - Page 44

• Manufacturer Part Number: SX1233IMLTRT
• Description: RF Transceiver Extended Bands Japan-Korea
• Manufacturer: Semtech

Specifications of SX1233IMLTRT

• Transmitting Current: 95mA
• Data Rate: 600Kbps
• Rf Ic Case Style: QFN
• No. Of Pins: 24
• Supply Voltage Range: 1.8V To 3.6V
• Operating Temperature Range: -40°C To +85°C
• Receiving Current: 17mA

5. Data Processing
5.1. Overview
5.1.1. Block Diagram
Figure below illustrates the SX1233 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.
The SX1233 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 SX1233 has two different data operation modes selectable by the user:
Each of these data operation modes is described fully in the following sections.
Rev 5 - June 2011
ADVANCED COMMUNICATIONS & SENSING
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.
Packet mode (recommended): user only provides/retrieves payload bytes to/from the FIFO. The packet is automatically
built with preamble, Sync word, and optional AES, CRC, and DC-free encoding schemes The reverse operation is
performed in reception. The uC processing overhead is hence significantly reduced compared to Continuous mode.
Depending on the optional features activated (CRC, AES, etc) the maximum payload length is limited to FIFO size, 255
bytes or unlimited.
Data
Potential datapaths (data operation mode dependant)
Tx/Rx
Tx
Rx
SYNC
RECOG.
Figure 24. SX1233 Data Processing Conceptual View
PACKET
HANDLER
CONTROL
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FIFO
(+SR)
SPI
DATASHEET
MISO
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SCK
MOSI
NSS
SX1233
DIO0
DIO2
DIO3
DIO4
DIO5
DIO1