Si4356
Rev 1.2 11
3. Device Configuration
The Si4356 is configured for operation using the four configuration selector pins (SEL0 – SEL3). These pins will be
connected to one of four possible inputs: GND, VDD, RX DATA/OUT1 (pin 14), or OUT0 (pin 12). Refer to the
tables below for how these pins should be connected for the desired configuration.
SEL0 and SEL1 may be connected to VDD, GND, or OUT1 to choose desired frequency. Note that a 10 k
resistor should be inserted between SEL1 and OUT1 when SEL1 is mapped to OUT1. See Table 9 for frequency
settings.
SEL2 and SEL3 may be connected to VDD, GND, or OUT1 to choose desired modem configuration. See Table 10
for basic configurations. Note that a 10 k
resistor should inserted between SEL2 and/or SEL3 and GND when
SEL2 and/or SEL3 are mapped to GND.
Table 9. Frequency Selection
SEL0 SEL1 Frequency (MHz)
GND VDD 433.92
VDD VDD 315.00
OUT1 VDD 434.15
GND OUT1 867.84
VDD OUT1 868.30
OUT1 OUT1 917.00
Table 10. Basic Configuration
Config.
Name
SEL2 SEL3 Mod Data Rate
(kbps)
RxBW (kHz) Squelch Recommended
F
DEV
(kHz)
OOK1 GND GND OOK 0.5–5 206 Disabled —
OOK2 VDD GND OOK 1–10 370 Disabled —
OOK3 OUT1 GND OOK 10–50 370 Disabled —
OOK4 OUT0 GND OOK 50–120 370 Disabled —
OOK5 GND VDD OOK 50–120 535 Disabled —
OOK6 VDD VDD OOK 0.5–2.4 100 Disabled —
FSK1 GND OUT1 (G)FSK 0.5–30 155 Disabled 30
FSK2 VDD OUT1 (G)FSK 0.5–30 185 Disabled 70
FSK3 OUT1 OUT1 (G)FSK 0.5–30 275 Disabled 30
FSK4 OUT0 OUT1 (G)FSK 10–120 275 Disabled 70
FSK5 GND OUT0 (G)FSK 10–120 535 Disabled 70
FSK6 VDD OUT0 (G)FSK 0.5–2.4 155 Enabled 30
FSK7 OUT1 OUT0 (G)FSK 0.5–2.4 275 Enabled 30
