Reference Manual

The ConnectCore 8X System-on-module Power interfaces
ConnectCore® 8X System-on-Module Hardware Reference Manual --
Preliminary
15
Input rail
Device being
powered
Internal power domains being
powered Description
VDD_USDHC1 i.MX 8X CPU VDD_USDHC1_1P8_3P3 Input power
supply for the
USDHC1
interface. This
interface is
typically
connected to a
microSD socket,
which also allows
booting from the
microSD card.
Digi recommends
that this power
domain be
connected to a
flexible power
supply (LDO3/4)
so it can work at
its highest speed
by adjusting input
voltage level.
VDD_MIPI_DSI_DIG i.MX 8X CPU VDD_MIPI_DSI_DIG_1P8_3P3 Input power
supply for DSI0
and DSI1
dedicated GPIOs
and I2C buses.
VDD_ENET0 i.MX 8X CPU
n VDD_ENET0_VSELECT_1P8_2P5_3P3
n VDD_ENET0_1P8_2P5_3P3
n VDD_ENET_MDIO_1P8_3P3
Input power
supply for the
ENET0 interface,
including the
MDIO bus.
Because all
ENET0-related
CPU blocks are
powered from
the same power
rail, 2.5V
configuration is
not available.
(The MDIO bus
does not work at
this voltage.)