OL2385SWUG datasheet(38/64 Pages) NXP

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NXP Semiconductors

OL2385SWUG

SIGFOX software driver

OL2385SWUG

All information provided in this document is subject to legal disclaimers.

User guide

Rev. 2.1 — 6 April 2018

38 / 64

Figure 27. Wakeup from sleep SPI command

7.2.1.2 Choosing the right region

The next command has to be about setting the region "Change to RCZXX". This

command is needed one time only after reset until the next reset. SIGFOX has divided

the world for its service into four regions:

• RCZ1 ETSI Europe (863 to 870 MHz)

• RCZ2 FCC US (902 to 928 MHz)

• RCZ3 ARIB Japan, Korea (915 to 930 MHz)

• RCZ4 FCC Latin America, Australia, New Zealand (902 to 915 MHz)

These regions decide the uplink-downlink frequency and the data rate. The choice of the

region also decides the hardware used for the device. RCZ2/4 devices have an external

PA on themselves whereas an RCZ3 device has an external TCXO(27.6MHz) used

instead of 55.2 MHz normal crystal. Therefore, software will only function properly, if the

right region is chosen according to correct hardware. Therefore, "Change to RCZXX"

should be the next command.

Note: By default, device wakes up in RCZ1 mode

Table 8. Regional center frequencies

By default, device wakes up in RCZ1 mode

Region

Opening Uplink center frequency (MHz)

Opening Downlink center

frequency (MHz)

Bandwidth (kHz)

RCZ1

868.13

869.525

192 (±96)

RCZ2

902.2

905.2

192 (±96)

RCZ3

923.2

922.2

36 (±18) evolution to 192 (± 96)

Opening UL center freq.

TX freq. used in SFXIQ testing

RCZ4

902.2

920.8

922.3

192 (±96)

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