User Manual

75
BT_PCM_VDR
I
Pull
-
low
77
SD_CMD
I/O
78
SD_D0
I/O
80
WLINK_RX
I
83
BT_RTS
O
84
N.C.
-
Previously BT_IRQ
85
BT_PCM_VCK
I/O
Pull
-
low
86
BT_PCM_VDX
O
floating
87
BT_EN
I
Active high
89
WLAN_IRQ
O
Active low
1.3 Power supply
The option board received a 5V power supply from the MLB. It generates from it a 3.3V/1.2A supply and a 1.8V/0.8A
used by the carrier board and the Galileo module.
1.3.1 Regulator 3.3V
From 5V, generate 3,3V power supply used by the Galileo module and the level-shifter.