SM1212E433 Semtech, SM1212E433 Datasheet - Page 42

• Manufacturer Part Number: SM1212E433
• Description: RF Module For SX1212
• Manufacturer: Semtech
• Series: -r
• Type: Transceiver, ISMr

Specifications of SM1212E433

• Frequency: 433MHz
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• For Use With/related Products: SX1212E

If the bit synchronizer is disabled, the raw demodulator output is made directly available on DATA pin and no DCLK
signal is provided.
Conversely, if the bit synchronizer is enabled, synchronous cleaned data and clock are made available respectively
on DATA and IRQ_1 pins. DATA is sampled on the rising edge of DCLK and updated on the falling edge as
illustrated in Figure 36.
Note that in Continuous mode it is always recommended to enable the bit synchronizer to clean the DATA signal
even if the DCLK signal is not used by the uC. (bit synchronizer is automatically enabled in Buffered and Packet
mode).
The tables below give the description of the interrupts available in Continuous mode.
Table 17: Interrupt Mapping in Continuous Rx Mode
Note: In Continuous mode, no interrupt is available in Stby mode
Table 18: Interrupt Mapping in Continuous Tx Mode
Rev 2 – June 18th, 2009
ADVANCED COMMUNICATIONS & SENSING
5.3.3. Rx Processing
5.3.4. Interrupt Signals Mapping
DATA (NRZ)
DCLK
IRQ_0
Figure 36: Rx Processing in Continuous Mode
IRQ_0
IRQ_1
IRQ_1
Rx_stby_irq_0
00 (d)
01
1x
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Tx
-
DCLK
Rx
DCLK
Sync
RSSI
-
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