Expansion Header [17] - XMOS XS1-L2 Hardware Manual

USB Audio 2.0 Reference Design, XS1-L2 Edition Hardware Manual (1.6) 16/32

13 Expansion Header [17]

The board provides a general purpose input/output expansion header to allow
interfacing to custom boards. For example, this could be an I
and four buttons to make a user interface.
The header contains the following:
+3V3 power pin.
Ground pin.
2
I C bus (as used to configure the PLL and CODEC).
One 4-bit GPIO port (X1P4F).
One 8-bit GPIO port, which is also shared with the LED outputs (X1P8B).
A 16-way IDC header is used as the physical connector and the pinout of this is
shown below:
Each IO pin can source or sink a maximum of 4mA.
Downloaded from Elcodis.com electronic components distributor
Pin Port Signal
1 NA +3V3
2 X1P8B7 LED_7
3 NA GND
4 X1P8B6 LED_6
5 X1P1C0 I2C_SDA
6 X1P8B5 LED_5
7 X1P1D0 I2C_SCL
8 X1P8B4 LED_4
9 X1P4F0 GPIO_0
10 X1P8B3 LED_3
11 X1P4F1 GPIO_1
12 X1P8B2 LED_2
13 X1P4F2 GPIO_2
14 X1P8B1 LED_1
15 X1P4F3 GPIO_3
16 X1P8B0 LED_0
www.xmos.com
2
C display, eight LEDs