XCARD XC-1A XMOS, XCARD XC-1A Datasheet - Page 12

• Manufacturer Part Number: XCARD XC-1A
• Description: BOARD DEV KIT XS1-G4
• Manufacturer: XMOS
• Series: XCite™r
• Type: MCUr

Specifications of XCARD XC-1A

• Design Resources: XC-1A Schematic
• Contents: Board, Cable
• For Use With/related Products: XS1-G4
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

XC-1A Hardware Manual (1.2)
The XC-1A can be powered directly from a host PC using a USB connector. The 5V
The USB connector can also be used to load and debug code on all of the XS1-G4’s
The XS1-G4 is clocked at 20MHz by a crystal oscillator on the card. Each processor is
8 USB Connector [H and J]
voltage is converted by the on-board regulator to the 1V and 3V3 supplies used by
the components.
processors. The USB connector provides JTAG control, system reset, processor debug,
and two UART links. The layout of the USB connector is shown below.
On power on, the XS1-G4 boots from the on-board flash memory. The XS1-G4 can
then be put into JTAG mode by the PC, which then boots another program.
No UART hardware is provided. Instead, two UART pins are mapped to ports, as
shown in the table below.
If a UART is required, it can be implemented in software by sampling and driving
these ports at the required rate. The connector performs a UART-to-USB conversion
on these pins, presenting a virtual COM port to the PC that can be interfaced via a
terminal emulator.
9 20MHz Crystal Oscillator [I]
clocked at 400MHz, the I/O ports at 100MHz, by an on-chip phase-locked loop (PLL).
Pin
X0D23
X0D24
www.xmos.com
Port
1b
P1H0
P1I0
Processor
0
PORT_UART_TX
PORT_UART_RX
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