USB Audio Design Guide
2.3
USB Multi-function Audio (MFA) Kit
It is not recommended to use this hardware as a basic for a new design
The XMOS Multi-function Audio kit
12
(XK-USB-AUDIO-U8-2C-AB) is a hardware refer-
ence design available from XMOS based on a single tile XMOS U-series device.
·
A main board which includes the XMOS U-series device and all audio
hardware
·
A “USB Slice” board which contains USB connectivity
The separate USB slice board allows flexibility in the connection method to the USB
audio source/sink as well as other functionality such as 3rd party authentication
ICs and any required USB switching. This also means the XMOS device can be used
as a USB device or host using the same main board.
This document addresses the combination of the main board with the USB AB slice
(part numbers XK-USB-AUDIO-U8-2C and XA-SK-USB-AB respectively). This provides
a standard USB Audio device hardware configuration using the B socket on the USB
AB slice.
X
MOS
XS1-U8A-64
24 bit 192kHz
+ DSD
Stereo Audio
DAC
CS4392
24 bit 192kHz
Stereo Audio
ADC
CS4392
I2S
I2S
Audio Master
Clock PLL
24.576 MHz
Or
22.5792 MHz
& 24MHz
MCLK
FSEL
Stereo
Differential to
Single Ended
Active LPF
Stereo
Single Ended
Active LPF
3.5mm
Stereo
TRS Jack
3.5mm
Stereo
TRS Jack
Gate
SPDIF
RCA
Socket
Buffer
Isolator &
Buffer
MIDI
MIDI
5 Pin DIN
MIDI TX
5 Pin DIN
MIDI RX
MUX
4Mbit
Flash
CS
SPI
2 Position
Switch
&
2 x Push
Buttons
2 x User
LEDs
USB
Slice
Connector
PCIE 36
Socket
USB
High Speed
I2C
GPIO
24MHz
XSYS
Debug
Connector
JTAG
XSCOPE
Link
12V DC
3A
Cent +ve
Connector
12V to 5V
DCDC
12
V
Over Voltage
Protection
5V
Over Current
Protection
Switch
V
B
U
S
O
U
T
EN
Preferential
5V OR
VBUS
IN
VBUS IN
Preferential
5V OR
5V
Charge Pump
5V Analogue Audio
Dual
3V3 LDO
3V3 IO
3V3 ADC
3V3 High
Side Switch
3V3 Analogue Audio
EN
S
ys
te
m
5
V
Figure 4:
Multi-
function
Audio Kit
Block
Diagram
The core board includes a U-Series device with integrated USB PHY, a stereo DAC
(with support for Direct Stream Digital) and a stereo ADC. Both ADC and DAC
http://www.xmos.com/products/reference-designs/mfa
XM0088546.1
Summary of Contents for xCORE-200 Multi-channel Audio board
Page 6: ...1 Overview XM0088546 1...
