COM Express® Type 7 + GPU Embedded System
Users Guide
www.connecttech.com
Document: CTIM-00020
Revision: 0.01
Page 19 of 30
Date: 2020-09-17
GPIO Header
Refer to section S2 switch selection for details on GPI and GPO power selection options.
Function GPIO
Location
P18
Type
HDB26 or DB15 Socket Connector
P/N
TBD
Mating
DB-26 or DB-15 Plug Connector.
Pinout
DB26 DB15 Description
1
1
+3.3V
2
-
+3.3V
3
-
+3.3V
4
-
+3.3V
5
2
GPI_PWR_SEL
6
3
GPO_PWR_SEL
7
4
+5V
8
-
+5V
9
-
+5V
10
-
+5V
11
5
GND
12
6
GPI0
13
-
GND
14
7
GPO0
15
-
GND
16
8
GPI1
17
-
GND
18
9
GPO1
19
10
GND
20
11
GPI2
21
-
GND
22
12
GPO2
23
-
GND
24
13
GPI3
25
15
GND
26
14
GPO3
Note:
Standard Population Covered, Optional Connector
Population
GPI_PWR_SEL/GPO_PWR_SEL is tied to the S2A/B
DIP switch respectively and could be used instead. If
S2 is left OFF connecting these signals to GND will
select 3.3V.
