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3.3.9 VGA connectors
VGA DB15 connector - CN39
Pin
Signal
Pin
Signal
1
RED
2
GREEN
3
BLUE
4
N.C.
5
GND
6
GND
7
GND
8
GND
9
+5V_VGA
10
GND
11
N.C.
12
CRT_I2C_DAT
13
HSYNC
14
VSYNC
15
CRT_I2C_CK
All of these signals are derived directly from COM Express module's VGA_xxxx corresponding signals, by placing ESD protections, EMI filters and voltage level
shifters for DDC lines.
VGA internal connector - CN21
Pin
Signal
Pin
Signal
1
RED
2
GREEN
3
BLUE
4
N.C.
5
GND
6
GND
7
GND
8
GND
9
+5V_VGA
10
GND
11
N.C.
12
CRT_I2C_DAT
13
HSYNC
14
VSYNC
15
CRT_I2C_CK
16
N.C.
CCOMe-965
CCOMe-965 - Rev. First Edition: 1.0 - Last Edition: 3.0 - Author: S.B. - Reviewed by G.G. Copyright © 2016 SECO S.r.l.
For use of standard VGA monitors, all RGB signals coming from COM Express CPU module
are carried out on a standard DB-15 HD connector, CN39, which is a DB-15 HD Hi-rise
female connector. Pinout follows VGA VESA DDC2 standard; related pinout is reported in the
table on the left.
RED: VGA Red Signal video output.
GREEN: VGA Green Signal video output.
BLUE: VGA Blue Signal video output.
HSYNC: VGA Horizontal Synchronization output signal.
VSYNC: VGA Vertical Synchronization output signal.
CRT_I2C_CLK: VGA's DDC Clock line for displays detection.
CRT_I2C_DATA: VGA's DDC Clock line for displays detection.
Alternative to the standard DB-15 connector, the board can be optionally supplied with
an internal pin header, CN21, which is a standard 2x8 pin, p2mm connector, type
MOLEX p/n 70246-1601 or equivalent, with the pinout shown in the table on the left.
Mating connector: MOLEX p/n 22-25-2162 with 70058 series female crimp terminals.
39
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