XMOS XTAG-2, Руководство по оборудованию

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XTAG-2 Hardware Manual (1.0) 3/8
3 USB Connector
The XTAG-2 uses a Standard-A type USB connector to link to a PC.
Standard-A type
USB Connector
USB Transceiver (USB3318)
The USB connector is connected to an SMSC USB3318 high-speed transceiver using
a ULPI interface. The I/O pins for the USB transceiver are mapped to ports on the
processor as described in the tables below.
Pin Port Processor
4bit 8bit
XD12 P1E0 ULPI_STP
XD13 P1F0 ULPI_NXT
XD14 P4C0 P8B0
ULPI_DATA[0:7]
XD15 P4C1 P8B1
XD16 P4d0 P8B2
XD17 P4D1 P8B3
XD18 P4D2 P8B4
XD19 P4D3 P8B5
XD20 P4C2 P8B6
XD21 P4C3 P8B7
XD22 P1G0 ULPI_DIR
XD23 P1H0 ULPI_CLK
Each pin can be configured either as a 4-bit port or an 8-bit port. The configuration
is determined by the set of port initialisers used in the software.
The reset pin on the USB transceiver is mapped to a 1-bit port on the processor as
described below:
Pin Port Processor
XD24 P1I0 PHY_RST_N
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