miriac SBC-S32G-R3_User Manual
V 3.2
59/65
© MicroSys Electronics GmbH 2021
6.17
LEDs
6.17.1 LEDs on Carrier
There are 4 LEDs on carrier available via lightpipe on board edge next ot power
connector. Organized from bottom to top: LD1, LD2, LD3, LD4
LED
Function
LD1
Green
LED ON: Power-up sequence of the module has finished, power is good
LED OFF: Power fail
LD2
Red
LED ON: Any reset is active
LED OFF: All resets are inactive
LD3
Green
User-LED
LED1 ON: I2C addr 44 reg 5 Data 0bxxx1.xxxx
LED1 OFF: I2C addr 44 reg 5 Data 0bxxx0.xxxx
LD4
Red
User-LED
LED2 ON: I2C addr 44 reg 5 Data 0bxx1x.xxxx
LED2 OFF: I2C addr 44 reg 5 Data 0bxx0x.xxxx
Table 6-44
Indicator LEDs
– Carrier
User Leds are controlled by IO-Expander J47 (FXL6408) GPIO5, GPIO4.
I2C dev 1
I2C nm 0x44 3
0bxx11.xxxx
I2C nm 0x44 5
0bxx00.xxxx
I2C nm 0x44 7
0bxx11.xxxx
both LED ON
I2C nm 0x44 7
0bxx10.xxxx
red LED ON
I2C nm 0x44 7
0bxx01.xxxx
green LED ON
I2C nm 0x44 7
0bxx00.xxxx
both LED OFF
6.17.2 LEDs on Module
On the SoM there are 4 additional LEDs. For more details please refer to the
MPX-S32G274A User Manual.