SX1231-31SKB915 Semtech, SX1231-31SKB915 Datasheet - Page 47
SX1231-31SKB915
Manufacturer Part Number
SX1231-31SKB915
Description
TVS
Manufacturer
Semtech
Specifications of SX1231-31SKB915
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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5.4. Continuous Mode
5.4.1. General Description
As illustrated in Figure 27, in Continuous mode the NRZ data to (from) the (de)modulator is directly accessed by the uC on
the bidirectional DIO2/DATA pin. The FIFO and packet handler are thus inactive.
5.4.2. Tx Processing
In Tx mode, a synchronous data clock for an external uC is provided on DIO1/DCLK pin. Clock timing with respect to the
data is illustrated in Figure 28. DATA is internally sampled on the rising edge of DCLK so the uC can change logic state
anytime outside the grayed out setup/hold zone.
Note
Rev 3 - April 2010
ADVANCED COMMUNICATIONS & SENSING
Data
DCLK
DATA
(NRZ)
the use of DCLK is required when the modulation shaping is enabled (see section 3.4.5).
Tx/Rx
Rx
SYNC
RECOG.
Figure 27. Continuous Mode Conceptual View
Figure 28. Tx Processing in Continuous Mode
T_DATA
T_DATA
CONTROL
Page 47
SPI
DATASHEET
MISO
www.semtech.com
SCK
MOSI
NSS
SX1231
DIO0
DIO2/DATA
DIO3
DIO1/DCLK
DIO4
DIO5
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