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VGA_GRN: Green Signal video output. A 150Ω pull-down resistor is placed on the line.
VGA_BLU: Blue Signal video output. A 150Ω pull-down resistor is placed on the line.
VGA_HSYNC: Horizontal Synchronization output signal.
VGA_VSYNC: Vertical Synchronization output signal.
VGA_I2C_CK: DDC Clock line for VGA displays detection. Output signal, electrical level +3.3V_RUN with 2K2Ω pull-up resistor.
VGA_I2C_DAT: DDC Clock line for VGA displays detection. Bidirectional signal, electrical level +3.3V_RUN with 2K2Ω pull-up resistor.
Please be aware that for the connection to external VGA displays, on the carrier board it is necessary to provide for filters and ESD protection like in the following
example schematics.
+5V_VGA
5
2
VGA_RED
R3
R-150
VGA_GRN
R4
R-150
VGA_BLU
R5
R-150
COMe-C55-CT6
COMe-C55-CT6 User Manual - Rev. First Edition: 1.0 - Last Edition: 1.0 - Author: S.B. - Reviewed by L.V. Copyright © 2020 SECO S.p.A.
D1
1
3
4
+5V_VGA
6
IP4221CZ6-S
L1
74478617
L3
BLM18PG600SN1
C1
C2
CC-10pF
CC-10pF
L4
74478617
C4
C5
CC-10pF
CC-10pF
C7
CC-100nF
L7
74478617
C9
C10
CC-10pF
CC-10pF
R1
R-0
+5V_RUN
D2
F1
SL04
nanoSMDC075F
CN1
G1
6
1
11
7
2
12
8
L5
C6
3
13
CC-10pF
9
4
14
L6
10
C8
5
15
CC-10pF
G2
1760015-046-R
D3
1
3
4
6
IP4221CZ6-S
+5V_VGA
+3.3V_RUN
R2
Q1
R-4K7
FDN337
L2
BLM18PG121SN1
VGA_I2C_DAT
+5V_VGA
C3
CC-100nF
U1
6
1
VGA_HSY NC
Y 1
A1
BLM18PG121SN1
5
2
VCC
GND
4
3
BLM18PG121SN1
VGA_VSY NC
Y 2
A2
74HCT2G34GW
+5V_VGA
+3.3V_RUN
R6
Q2
R-4K7
FDN337
L8
BLM18PG121SN1
VGA_I2C_CK
+5V_VGA
5
2
39
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