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2018
congatec
AG
TEVA2m11
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4.3.3
Status LEDs D68-D72, D84-D86
The status LEDs indicate the different power states of the conga-TEVAL/COMe 3.0. You can connect an external power LED to pin header X58.
Table 10 Power LEDs Status
LED Status Description
All
Off
No power applied.
All
On
ATX power supply is fully switched on, with stable 3.3 V, 5 V and 12 V.
D84
On
The green LED indicates the status of SUS_S3#
D85
On
The green LED indicates the status of SUS_S4#
D86
On
The green LED indicates the status of SUS_S5#
D70
On
The green LED indicates that 12 V main power is present
D71
On
The green LED indicates that 5 V main power is present
D72
On
The green LED indicates that the onboard 3.3 V main power is present
D68
On
The yellow LED indicates that the onboard 3.3 V standby power is present
D69
On
The yellow LED indicates that 5V standby power is applied to the conga-TEVAL/COMe 3.0.
If only D69
lights, it indicates that the ATX power supply is mechanically switched on and only 5 V standby power is
applied to the conga-TEVAL/COMe 3.0.
4.3.4
PWR_OK Signal
The PWR_OK signal is a high-active input from the main power supply to the module and it indicates whether the power is good. Use jumper
JP9 to configure the PWR_OK signal.
Table 11 JP9 - Module PWR_OK Selection
Pin
Description
1 - 2
Add 3.3V pull-up with 1 kΩ to PWR_OK signal (for debug purposes)
3 - 4
Connect PWR_OK signal from ATX power supply (default)
5 - 6
Connect PWR_OK signal from onboard DC/DC regulator (only via DC banana jack)
Connector Type
JP9: 2.54 mm, 2-pin jumper
D84 D85 D86
D70 D71 D72
D68 D69
X58
2
1
JP9
2
1
3
5
6
4
