2016-07-28 00:48:51 +08:00
|
|
|
<!--
|
|
|
|
|
---
|
|
|
|
|
name: Pi-DAC+
|
|
|
|
|
class: board
|
|
|
|
|
type: audio
|
|
|
|
|
formfactor: HAT
|
|
|
|
|
manufacturer: IQaudIO
|
|
|
|
|
description: An I2S digital to analog audio converter HAT for the Pi
|
|
|
|
|
url: http://www.iqaudio.co.uk/audio/8-pi-dac-0712411999650.html
|
|
|
|
|
buy: http://www.iqaudio.co.uk
|
|
|
|
|
image: 'iqaudio-pi-dac.png'
|
|
|
|
|
pincount: 40
|
|
|
|
|
eeprom: yes
|
2016-10-22 23:26:45 +08:00
|
|
|
power:
|
|
|
|
|
'1':
|
|
|
|
|
'2':
|
|
|
|
|
ground:
|
|
|
|
|
'6':
|
|
|
|
|
'9':
|
|
|
|
|
'14':
|
|
|
|
|
'20':
|
|
|
|
|
'25':
|
|
|
|
|
'30':
|
|
|
|
|
'34':
|
|
|
|
|
'39':
|
2016-07-28 00:48:51 +08:00
|
|
|
pin:
|
|
|
|
|
'3':
|
|
|
|
|
mode: i2c
|
|
|
|
|
'5':
|
|
|
|
|
mode: i2c
|
|
|
|
|
'12':
|
|
|
|
|
name: I2S
|
|
|
|
|
'15':
|
|
|
|
|
name: Mute/Unmute
|
|
|
|
|
description: Pi-AMP+ only (optional)
|
|
|
|
|
'16':
|
|
|
|
|
name: Rotary Encoder
|
|
|
|
|
description: (optional)
|
|
|
|
|
'18':
|
|
|
|
|
name: Rotary Encoder
|
|
|
|
|
description: (optional)
|
|
|
|
|
'22':
|
|
|
|
|
name: IR Sensor
|
|
|
|
|
description: (optional)
|
|
|
|
|
'35':
|
|
|
|
|
name: I2S
|
|
|
|
|
'38':
|
|
|
|
|
name: I2S
|
|
|
|
|
'40':
|
|
|
|
|
name: I2S
|
|
|
|
|
install:
|
|
|
|
|
'devices':
|
|
|
|
|
- 'i2c'
|
|
|
|
|
-->
|
|
|
|
|
#Pi-DAC+
|
|
|
|
|
|
|
|
|
|
The Pi-DAC+ takes the digital audio signals (I2S) from the Raspberry Pi and through the
|
|
|
|
|
onboard Texas Instruments PCM5122 DAC delivers variable output (hardware volume
|
|
|
|
|
control) analog audio to the Pi-DAC+ Phono connectors. The PI-DAC+ also, via the
|
|
|
|
|
Texas Instruments TPA6133A headphone amp, supports the direct use of headphones via
|
|
|
|
|
the Pi-DAC+ 3.5mm audio jack.
|
|
|
|
|
|
|
|
|
|
The Pi-DAC+ uses GPIO22 to mute/unmute the Pi-AMP+.
|
|
|
|
|
|
|
|
|
|
You can use GPIO25 to connect an IR sensor and GPIO23/24 for a rotary encoder. Both of
|
|
|
|
|
these parts are optional, but are broken out on the Pi-DAC+ for convenient access.
|
|
|
|
|
|
|
|
|
|
Note: pins reserved for the rotary encoder and IR sensor can be used for other purposes if those add-ons have not been fitted and enabled by software.
|
