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2.5.17
I2S Connector (CN26)
The CN26 is a 2x5-pin connector for I2S (Integrated Interchip Sound) interface. The I2S
is an electrical serial bus interface standard used for connecting digital audio devices.
You can select I2S or HDA support with jumper JP4, see section 2.4.4.
Pin
1
2
3
4
5
6
7
8
9
10
2.5.18
Digital I/O Connector (CN31)
The board is equipped with a 2x5-pin digital I/O connector (CN31) that meets
requirements for a system customary automation control. The digital I/O can be
configured to control cash drawers and sense warning signals from an Uninterrupted
Power System (UPS), or perform store security control. The digital I/O is controlled via
software programming.
Pin
1
2
3
4
5
6
7
8
9
10
Note
Board and Pin Assignments
Signal
I2S_WS
+3.3V
I2S_CLK
SMB_DATA
I2S_SDO
SMB_CLK
I2S_SDI
NC
I2S_RST#
GND
Signal
GPIO4
GPIO0
GPIO5
GPIO1
GPIO6
GPIO2
GPIO7
GPIO3
+3.3V
GND
Use jumper JP2 to select LPC or GPIO function, see section 2.4.2.
Q7B300 Qseven Module Development Board
25
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