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Summary of Contents for Nordic Semiconductor nRF5340
- Page 1 Audio DK Hardware v1.0.0 User Guide 4406_708 / 2023-01-12...
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Page 2: Table Of Contents
....... . . 3.3 nRF5340 SoC ........ -
Page 3: Revision History
Revision history Date Description 2023-01-12 First release 4406_708... -
Page 4: Introduction
True Wireless Stereo (TWS) earbud. For most use cases, we recommend using two or more DKs. The three main components of the DK are the nRF5340 System on Chip (SoC), nPM1100 Power Management Integrated Circuit (PMIC), and Cirrus Logic's CS47L63 Audio DSP. The CS47L63’s high- performance DAC and differential output driver are optimized for direct connection to an external headphone load. - Page 5 Introduction • Audio peripherals: I C, digital microphone interface (PDM) • Up to four Pulse Width Modulation (PWM) units with EasyDMA • 12-bit, 200 ksps ADC with EasyDMA, eight configurable channels with programmable gain • Full-speed (12 Mbps) USB device •...
- Page 6 The power supply adapter must meet PS1 requirements. Radio frequency notice The nRF5340 Audio DK operates in the 2.4 GHz ISM radio frequency band. The maximum radio frequency power transmitted in the frequency band in which the DK operates equals +3 dBm (2 mW).
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Page 7: Kit Content
Kit content The nRF5340 Audio DK consists of hardware and access to software components, hardware design files, applications, and documentation. Figure 1: nRF5340 Audio DK The nRF5340 Audio DK contains the following: • nRF5340 Audio development board (PCA10121) with plastic casing •... -
Page 8: Hardware Description
Hardware description This section focuses on the hardware components of the nRF5340 Audio DK, with descriptions of the various hardware components that are present on the device. 3.1 Block diagram The block diagram illustrates the nRF5340 Audio DK functional architecture. - Page 9 Hardware description Figure 3: nRF5340 Audio DK (PCA10121) front view Figure 4: nRF5340 Audio DK (PCA10121) back view The following figure shows the back of the DK without the case: Figure 5: nRF5340 Audio DK (PCA10121) back view without case 4406_708...
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Page 10: Nrf5340 Soc
Hardware description 3.3 nRF5340 SoC The nRF5340 is an ultra-low power wireless SoC with two Arm Cortex-M33 processors and a multiprotocol 2.4 GHz transceiver. The two flexible processors combined with advanced security features and an operating temperature up to 105°C make the nRF5340 SoC a great choice for professional lighting, advanced wearables, and other complex Internet of Things (IoT) applications. - Page 11 Hardware description Label Description BUTTON2/NFC2 P0.03 Button 2 / NFC antenna (Not used) BUTTON3 P0.04 Button 3 BUTTON5 P0.05 Button 5 BUTTON4 P0.06 Button 4 RGB1_LED_RED P0.07 Red color of the RGB LED 1 SPI_SCK P0.08 SPI clock to hardware codec and microSD card SPI_MOSI P0.09 SPI data output to hardware codec and microSD...
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Page 12: Audio Codec
Routed to connector P4 P1.14 Routed to connector P3 CURR_MON_ALERT P1.15 Alert signal from current-shunt monitor devices Table 1: nRF5340 SoC pin map 3.5 Audio codec Schematic drawing for the nRF5340 Audio DK codec. HEADPHONE OUTP HEADPHONE OUTN TP41 OUTP SPI1_MISO/I2C1_SCL... -
Page 13: Connector Interface
Hardware description 3.6 Connector interface Access to the General-Purpose Input/Output (GPIO)s for the nRF5340 Audio DK is available from connectors P1-P5, P10-P11, and P14-P15. Figure 8: Interface connectors for GPIO and Arduino Figure 9: Interface connectors for external hardware codec... -
Page 14: Microphone
Figure 11: PDM microphone 3.8 LEDs and buttons The user interface on the nRF5340 Audio DK consists of five user-programmable LEDs and five user- programmable buttons. The two buttons (SW1) and (SW1) are the VOL- and VOL+ buttons, respectively. Button (SW3) is for PLAY/ PAUSE. -
Page 15: Switches
3.9 Requirements for external flash memory DFU To enable the external flash DFU, you need an additional flash memory shield. The nRF5340 Audio DK application uses the MX25R6435F as the SPI NOR Flash. See the following table for the pin definitions. -
Page 16: Interfaces
Hardware description 3.10 Interfaces The nRF5340 Audio DK has points for test purposes and solder bridges for enabling and disabling different functionalities. 3.10.1 Test points The nRF5340 Audio DK has several test points that can be useful during development and debugging. - Page 17 Hardware description Designator Description Size Layer TP23 SWDIO nRF5340 Serial Wire Debug 1.5 mm (SWD) data TP24 SWDCLK nRF5340 SWD clock 1.5 mm TP25 RESET nRF5340 Reset 1.5 mm TP26 SD_CS SD card slot CS line 1.5 mm TP27 SD_SCK SD card slot SCK line 1.5 mm...
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Page 18: Solder Bridge Overview
Table 4: Test points 3.10.2 Solder bridge overview The nRF5340 Audio DK has a range of solder bridges for enabling or disabling selected functionalities. Changes to the solder bridges are not needed for normal use of the DK. The following table is a complete overview of the solder bridges on the nRF5340 Audio DK. -
Page 19: Hardware Limitations
Hardware description Designator Description Default state Layer Cut to enable HW CODEC 1.8V current Shorted measurements on P8 Cut to enable VDD_nRF current Shorted measurements on P9 Cut to disconnect filter from OUTP Shorted SB10 Cut to disconnect filter from OUTN Shorted SB11 Cut to disconnect the LED for the HW... - Page 20 This is caused by higher USB cable. If the problem than expected inrush persists, contact Nordic current. This function is Semiconductor and ask for tested in production. a replacement. Table 6: Hardware limitations for the nRF5340 Audio DK 4406_708...
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Page 21: Glossary
Glossary Clear to Send (CTS) In flow control, the receiving end is ready and telling the far end to start sending. Development Kit (DK) A hardware development platform used for application development. Device Firmware Update (DFU) A mechanism for upgrading the firmware of a device. General-Purpose Input/Output (GPIO) A digital signal pin that can be used as input, output, or both. - Page 22 Request to Send (RTS) In flow control, the transmitting end is ready and requesting the far end for a permission to transfer data. Serial Peripheral Interface (SPI) Synchronous serial communication interface specification used for short-distance communication. Serial Wire Debug (SWD) A standard two-wire interface for programming and debugging Arm CPUs.
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Page 23: Recommended Reading
Recommended reading In addition to the information in this document, you may need to consult other documents. • nRF5340 Product Specification • nPM1100 Product Specification • nRF5340 Errata • nPM1100 Errata • nRF Connect SDK documentation • nRF Connect Programmer... -
Page 24: Legal Notices
Nordic Semiconductor ASA customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Nordic Semiconductor ASA for any damages resulting from such improper use or sale.
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