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XC-1A Hardware Manual (1.2)
5 I/O Expansion Areas [E]
The I/O pins of XCore1, XCore2 and XCore3 are brought out to expansion areas on
both sides of the card. These areas have 0.1" pitch plated through holes and are
suitable for use with IDC headers. To provide maximum flexibility, no headers are
fitted, allowing the most suitable type to be selected. The routing of the I/O and
power pins in the expansion headers is shown below.
16
15
GND
5V
X1D11
X1D10
X1D9
X1D8
X1D7
X1D6
GND
3V3
X1D5
X1D4
X1D3
X1D2
X1D1
X1D0
2
1
16
15
GND
5V
X2D11
X2D10
X2D9
X2D8
X2D7
X2D6
GND
3V3
X2D5
X2D4
X2D3
X2D2
X2D1
X2D0
2
1
The expansion headers provide a bank of 12 I/O pins. The pins are mapped to the
ports as shown in the table on the next page.
Eight pins from each bank can be configured as either two 4-bit ports or a single
8-bit port. Alternatively, two of the expansion headers can be used together as a
single 16-bit port.
www.xmos.com
1
2
X3D12
X3D13
X3D15
X3D14
X3D16
X3D17
3V3
GND
X3D18
X3D19
X3D20
X3D21
X2D22
X3D23
5V
GND
15
16
1
2
X3D1
X3D0
X3D2
X3D3
X3D4
X3D5
3V3
GND
X3D6
X3D7
X3D8
X3D9
X2D10
X3D11
5V
GND
15
16
7/18
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