USB AUDIO 2.0 REFERENCE DESIGN XMOS, USB AUDIO 2.0 REFERENCE DESIGN Datasheet - Page 8

• 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

7 XSYS Interface [G]
USB Audio 2.0 Reference Design, XS1-L1 Edition Hardware Manual (1.0)
A standard XMOS XSYS interface is provided to allow host debug of the board via
JTAG.
An XTAG2 USB debug adapter can be plugged into this port to allow running/debug-
ging code, programming the FLASH memory and selection of boot mode. A 20-way
IDC header is used as the physical connector and the pinout of this is shown below:
On power on, the XS1-L1 boots from the on-board flash memory. With the XTAG2
connected, the XS1-L1 can be reset and then booted from a program on the host PC.
Signal
TRST_N 3
TMS
TCK
TD1
TD2
SRST_N
DEBUG
GND
NC
Pin
7
9
5
13
15
11
4, 8, 12, 16, 20
1, 2, 6, 10, 14, 17, 18, 19 These pins are not connected.
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Description
JTAG Test Reset. Active low.
JTAG Test Mode Select.
JTAG Test Clock.
JTAG Test Data. From debug adapter to XS1-L1.
JTAG Test Data. From XS1-L1 to debug adapter.
System Reset. Active low. Resets XS1-L1 device.
XS1-L1 DEBUG Interrupt line.
Ground.
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