Advantech SPC-57 user manual CN 12 HotKey function header, Pin Number, Pin function

		touch screen function
30	YP	touch screen signal
31	XN	touch screen signal
32	YN	touch screen signal
33	nUART1_DCD
34	UART1_RXD
35	UART1_TXD
36	nUART1_DTR
37	GND
38	nUART1_DSR
39	nUART1_RTS
40	nUART1_CTS
41	nUART1_RI
42	VCC_UART1	+5V
43	GND
44	VCC_UART1
45	N.C.	No function
46	N.C.	No function
47	USB_VCC5
48	GND
49	SA_BUSB_DPR
50	SA_BUSB_DNR
51	USB1_V	USB 1st host power +5V
52	GND
53	USB1_P	USB 1st host signal
54	USB1_N	USB 1st host signal
55	USB2_V	USB 2ed host power +5V
56	GND
57	USB2_P	USB 2ed host signal
58	USB2_N	USB 2ed host signal

★CN 12 : HotKey function header

Pin Number	Pin function	Ps.
1	HK 1	1st pin of hotkey function
2	HK 5	5th pin of hotkey function
3	HK 2	2nd pin of hotkey function
4	HK 6	6th pin of hotkey function
5	HK 3	3rd pin of hotkey function
6	HK 7	7th pin of hotkey function
7	HK 4	4th pin of hotkey function
8	HK 8	8th pin of hotkey function
9	GND
10	SYS_VCC3P3

note : when HKx connects to SYS_VCC3P3, then hotkey function works. HKx signals are triggered by rising edge.

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