Integration Manual
Table Of Contents
- Document information
- Contents
- 1 System description
- 1.1 Overview
- 1.2 Applications
- 1.3 Architecture
- 1.4 Pin assignments
- 1.5 Supply interfaces
- 1.6 System function interfaces
- 1.7 Debug
- 1.8 GPIO pins
- 1.9 Analog interfaces
- 1.10 Serial interfaces
- 1.10.1 Universal Asynchronous Receiver/Transmitter (UART)
- 1.10.2 Serial Peripheral Interface (SPI)
- 1.10.3 Quad Serial Peripheral Interface (QSPI)
- 1.10.4 Inter-Integrated Circuit (I2C) interface
- 1.10.5 Pulse Width Modulation (PWM) interface
- 1.10.6 Inter-IC Sound (I2S) interface
- 1.10.7 Pulse Density Modulation (PDM) interface
- 1.10.8 USB 2.0 device interface
- 1.11 Antenna interface
- 1.12 Reserved pins (RSVD)
- 1.13 GND pins
- 2 Software
- 3 Flashing application software
- 4 Design-in
- 5 Handling and soldering
- 6 Regulatory information and requirements
- 6.1 ETSI – European market
- 6.2 FCC/ISED – US/Canadian markets
- 6.3 MIC - Japanese market (pending)
- 6.4 NCC – Taiwanese market (pending)
- 6.5 KCC – South Korean market (pending)
- 6.6 ANATEL Brazil compliance (pending)
- 6.7 Australia and New Zealand regulatory compliance (pending)
- 6.8 South Africa regulatory compliance (pending)
- 6.9 Integration checklist
- 6.10 Pre-approved antennas list
- 7 Technology standards compliance
- 8 Product testing
- Appendix
- A Glossary
- B Antenna reference designs
- Related documents
- Revision history
- Contact
NORA-B1 series - System integration manual
UBX-20027617 - R04 System description Page 15 of 61
C1-Public
1.10.5 Pulse Width Modulation (PWM) interface
NORA-B1 supports up to four PWM instances, each with four channels. All four instances are
available through the application core. The PWM module enables the generation of pulse width
modulated signals on GPIO. The module implements an up or up-and-down counter with four PWM
channels that drive assigned GPIOs.
1.10.6 Inter-IC Sound (I2S) interface
NORA-B1 supports a single I2S port available on the application core. The I2S module, supports the
original two-channel I2S format, and left- or right-aligned formats.
1.10.7 Pulse Density Modulation (PDM) interface
NORA-B1 supports a single PDM interface available through the application core. The PDM module
enables input of pulse density modulated signals from external audio frontends, for example, digital
microphones. The PDM module generates the PDM clock and supports single-channel or dual-
channel (left and right) data input.
1.10.8 USB 2.0 device interface
NORA-B1 supports a single, full-speed (12 Mbps) USB device (peripheral) compliant with version 2.0
of the USB specification. The USB device port is available through the application core.
The pin configuration of the USB interface is as follows:
• VBUS, 5 V supply input, required to use the interface
• USB_DP, USB_DM, differential data pair
The USB interface has a dedicated power supply that requires a 5 V supply voltage for the VBUS pin.
This allows the USB interface to be used even though the rest of the module might be battery
powered or supplied by a 1.8 V supply.
1.11 Antenna interface
☞ The antenna interface is different for each module variant in the NORA-B1 series.
1.11.1 U.FL connector – NORA-B100
NORA-B100 is equipped with a U.FL connector to accommodate an external antenna. The antenna
must have a characteristic impedance of 50 Ω and be designed for the 2.4 GHz band. Some external
antennas plug directly to the U.FL connector, while others use an SMA or reversed polarity SMA (RP-
SMA) connector through a short U.FL to SMA or RP-SMA adapter cable.
Antennas with an RP-SMA connector or U.FL connector are generally included in FCC, ISED, R&TTE
and MIC radio tests. Antennas with SMA connectors are included in R&TTE and MIC radio tests, but
due to FCC/ISED regulations are not included in FCC or ISED tests. See also the Pre-approved
antennas list.
NORA-B100 can be integrated with other antennas. In this instance, OEM designers must certify
the both the host system and integrated antenna with the respective regulatory agencies.
1.11.2 Antenna pin – NORA-B101
NORA-B101 is equipped with an RF ANT pin. The ANT pin has a nominal characteristic impedance of
50 Ω and must be connected to the antenna through a 50 Ω transmission line to allow transmission
and reception of radio frequency (RF) signals in the 2.4 GHz frequency band.