NanoHat PCM5102A

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1 Introduction

NanoHat PCM5102A

• The NanoHat PCM5102A module uses TI's DAC audio chip PCM5102A and NS' low-noise, ultra-low dropout LP2992 regulator. PCM5102A's sample rates up to 384kHz and its resolution is 32-bit.
• Its dynamic range is 112dB. Its THD+N at –1 dBFS is -93db. Its full-scale single-ended output is 2.1V. The SNR is 120dB.
• Its onboard VS1838B infrared receiver allows it to be remote-controlled.
• This module has exactly the same dimension as the NanoPi NEO/Air and can be stacked on an NanoPi NEO/Air.

2 Hardware Spec

• Ultra-low out-of-band noise
• Audio data bit length: 16-bit, 24-bit and 32-bit
• Audio format selection: I2S (Low) / Left-justified
• Sampling frequency: 384KHz, resolution: 32-bit
• Onboard infrared receiver

• Pin Description:

NanoPi NEO/Air 24 Pin header is not listed here. Refer to NanoPi NEO/Air's wiki site for more details
NanoPi NEO NanoPi NEO Air

12Pin header pin description:

Pin	Name	Description
1	VDD_5V	5V Power In
2	NC	Not Connected
3	NC	Not Connected
4	NC	Not Connected
5	NC	Not Connected
6	IR Receiver	IR Receiver
7	NC	Not Connected
8	LRCK	I2S/PCM Sample Rate Clock/Sync
9	BCK	I2S/PCM Sample Rate Clock
10	DIN	I2S/PCM Serial Data Input
11	NC	Not Connected
12	GND	GND

3 Hardware & Software Systems that Work with NanoHat PCM5102A

Index	CPU Model	Board Model	OS
1	H3	NanoPi NEO	Allwinner's released Linux-3.4 kernel and Mainline Linux-4.x kernel
2	H3	NanoPi NEO Air	Allwinner's released Linux-3.4 kernel and Mainline Linux-4.x
3	H5	NanoPi NEO2	Mainline Linux-4.x kernel
4	H5	NanoPi NEO Plus2	Mainline Linux-4.x kernel

4 Applications

The NanoHat PCM5102A can be stacked on supported boards. Here is a hardware setup:

5 How to Play

5.1 Under H3 & Linux-3.4 Kernel

If you use a FriendlyElec's H3 board under Allwinner's released Linux-3.4 kernel run the following command to check whether or not the NanoHat PCM5102A is enabled:

$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: Pcm5102a [Pcm5102a], device 0: Playback pcm5102a-hifi-0 []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: sndhdmi [sndhdmi], device 0: SUNXI-HDMIAUDIO sndhdmi-0 []
  Subdevices: 1/1
  Subdevice #0: subdevice #0

card 0 stands for pcm5102a. You can play an audio file by running the following command:

$ aplay /root/Music/test.wav -D plughw:0

-D plughw:0 stands for audio card 0. Connect your module to a speaker and you will hear your music.

5.2 Under H3/H5 & Linux-4.x Kernel

If you use a FriendlyElec's H3/H5 board under Allwinner's released Linux-4.x kernel you need to enable the NanoHat PCM5102A with npi-config:
Start npi-config as root:

$ npi-config

Open the following menu:

Open I2S:

Enable/Disable I2S. By default I2S0 is disabled:

After you enable I2S0 I2C1 will be disabled.After I2S0 is enabled select pcm5102a:

Return to the main menu and do <Finish>. Reboot your system and run the following command to check whether or not the NanoHat PCM5102A is enabled:

$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: sndsun8ii2sdac [snd-sun8i-i2s-dac], device 0: sun8i-i2s-dac pcm5102a-hifi-0 []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: Codec [H3 Audio Codec], device 0: CDC PCM Codec-0 []
  Subdevices: 1/1
  Subdevice #0: subdevice #0

card 0 stands for pcm5102a. You can play an audio file by running the following command:

$ aplay /root/Music/test.wav -D plughw:0

-D plughw:0 stands for audio card 0. Connect your module to a speaker and you will hear your music.

6 Resources

• [Schematic](Schematic - NanoHat PCM5102A.pdf)
• [Datasheet](PCM5102A)

7 Update Log

7.1 Jan-20-2017

• Released English version

7.2 July-4-2017

• Added section 3
• Updated section 5: added details on how to play it with H3 and H5 boards under different kernels