TQ MBa57 Series, User Manual, Page: 51 / 62

User's Manual l MBa57xx UM 0100 l © 2020, TQ-Systems GmbH Page 46
4.3 Diagnostic- and user interfaces
4.3.1 Diagnostic LEDs
The MBa57xx provides 32 diagnostic and status LEDs to indicate the system condition.
Table 53: Diagnostic LEDs
Function Reference Colour Signal
USB
V62 Green USB2_H1_VBUS (lit when VBUS of USB2.0 Host1 is active)
V63 Green USB2_H2_VBUS (lit when VBUS of USB2.0 Host2 is active)
V64 Green USB2_H3_VBUS (lit when VBUS of USB2.0 Host3 is active)
V65 Green USB2_H4_VBUS (lit when VBUS of USB2.0 Host4 is active)
V66 Green USB3_H1_VBUS (lit when VBUS of USB3.0 Host1 is active)
V67 Green USB3_H2_VBUS (lit when VBUS of USB3.0 Host2 is active)
V68 Green USB3_H3_VBUS (lit when VBUS of USB3.0 Host3 is active)
V25 Green USB2_OTG_VBUS (lit when VBUS of USB2 OTG is active)
mPCIe
V91 Green Mini PCIe WWAN
V92 Green Mini PCIe WLAN
V93 Green Mini PCIe WPAN
SATA V14 Green LED lit when SATA is active
GPIO
V70 Green LED on port expander (I2C4:0x21) Port IO0_3 (lit when port high)
V69 Green LED on port expander (I2C4:0x21) Port IO0_4 (lit when port high)
Power
V22 Green Status 24 V (lit when supply 24 V active)
V21 Green Status 12 V (lit when supply 12 V active)
V23 Green Status 5 V (lit when supply 5 V active)
V24 Yellow Status 3.3 V (lit when supply 3.3 V active)
V20 Green Status 3.3 V Mini PCIe (lit when supply 3.3 V for Mini PCIe active)
V59 Green Status 1.8 V (lit when supply 1.8 V active)
V60 Green Status 1.5 V (lit when supply 1.5 V active)
V61 Green Status 1.1 V (lit when supply 1.1 V active)
USB Debug V85 Green LED lit when USB Debug is active
Eth
X52
Yellow Activity LED Gbit Eth 1 (lit when active)
Green Error LED Gbit Eth 1 (lit when link is active, flashes during data transfer)
X53
Yellow Activity LED Gbit Eth 2 (lit when active)
Green Error LED Gbit Eth 2 (lit when link is active, flashes during data transfer)
X21A
Yellow Activity LED 100 Mbit Eth 1 (lit when active)
Green Error LED 100 Mbit Eth 1 (lit when link is active, flashes during data transfer)
X21B
Yellow Activity LED 100 Mbit Eth 2 (lit when active)
Green Error LED 100 Mbit Eth 2 (lit when link is active, flashes during data transfer)
Reset V82
Red Reset LED (lit when TQMa57xx is in reset)
Green Reset LED (lit when PMIC_REGEN1 = HIGH

“Power Good” on TQMa57xx)