USB AUDIO 2.0 REFERENCE DESIGN XMOS, USB AUDIO 2.0 REFERENCE DESIGN Datasheet - Page 30

• Manufacturer Part Number: USB AUDIO 2.0 REFERENCE DESIGN
• Description: USB AUDIO 2.0 REFERENCE DESIGN
• Manufacturer: XMOS

Specifications of USB AUDIO 2.0 REFERENCE DESIGN

• Design Resources: USB AUDIO Schematic
• Main Purpose: Audio, Audio Processing
• Embedded: Yes
• Utilized Ic / Part: XS1-L1
• Primary Attributes: Audio data up to 24-bit @ 192kHz
• Secondary Attributes: I²S and S/PDIF
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 880-1017

The channel status bits are 0x0nc07A4, where c=1 for left channel, c=2 for right
XS1 devices can support S/PDIF receive up to 192kHz.
The S/PDIF receiver module uses a clockblock and a buffered one-bit port. The
4-bits.
The receiver outputs audio samples over a streaming channel end where data can be
The S/PDIF receive function never returns. The 32-bit value from the channel input
The tag has one of three values:
USB Audio Software Design Guide
channel and n indicates sampling frequency:
3.9 S/PDIF Receive
clock-block is divided of a 100 MHz reference clock. The one bit port is buffered to
input using the built-in input operator.
comprises:
Frequency (kHz)
n
0:3
4:28
29:31
FRAME_X
FRAME_Y
FRAME_Z
Bits
Tag
A tag (see below)
PCM encoded sample value
User bits (parity, etc)
Sample on channel 0 (Left for stereo)
Sample on another channel (Right if for stereo)
Sample on channel 0 (Left), and the first sample of a frame;
can be used if the user bits need to be reconstructed.
44.1
0
Meaning
Table 16: S/PDIF RX Word Structure
Table 15: Channel Status Bits
Table 17: S/PDIF RX Tags
48
2
88.2
8
96
A
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176.4
C
192
E
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