User's Manual l MBa7x UM 0101 l © 2020, TQ-Systems GmbH
Page 53
4.3
Diagnostic- and user interfaces
4.3.1
Diagnostic LEDs
The MBa7x provides 22 diagnostic and status LEDs to indicate the system condition.
Table 65:
Meaning of diagnostic LEDs
Function
Reference
Colour
Signal
USB
V1
Green
VBUS USB Host 1 (lights up when VBUS of USB Host 1 is active)
V2
Green
VBUS USB Host 2 (lights up when VBUS of USB Host 2 is active)
V3
Green
VBUS USB Host 3 (lights up when VBUS of USB Host 3 is active)
V4
Green
VBUS USB Host 4 (lights up when VBUS of USB Host 4 is active)
V5
Green
VBUS USB-OTG 1 (lights up when VBUS of USB-OTG 1 is active)
Mini PCIe
V6
Green
Mini PCIe WWAN
V7
Green
Mini PCIe WLAN
V8
Green
Mini PCIe WPAN
GPIO-LEDs
V9
Green
LED on Port expander Port IO1_0 (lit when port high)
V10
Green
LED on Port-Expander Port IO1_1 (lit when port high)
Power
V11
Green
Status 24 V (lights up when supply 24 V active)
V12
Green
Status 12 V (lights up when supply 12 V active)
V13
Green
Status 5 V (lights up when supply 5 V active)
V14
Green
Status 3.3 V (lights up when supply 3.3 V active)
V15
Green
Status 3.3 V Mini-PCIe (lights up when supply 3.3 V for Mini-PCIe active)
USB-Debug
V16
Green
TX-LED (lights up when transmission is active)
V17
Green
RX-LED (lights up when transmission active)
Ethernet
X8B
Yellow
Activity LED Ethernet 1 (lights up in case of error)
X8C
Green
Error LED Ethernet 1 (lights up when link is active, flashes during data transfer)
X9B
Yellow
Activity LED Ethernet 2 (lights up in case of error)
X9C
Green
Error LED Ethernet 2 (lights up when link is active, flashes during data transfer)
Reset
V19
Red
Reset LED (lights up when module in reset)
Figure 43: Position of diagnostic LEDs
