SolidRun Ltd MX6 User Manual
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SR-uSOM-MX6 Integration Manual
SR-uSOM-MX6 Power Up Sequence
Integration with the SR-uSOM-MX6 is easy, power sequencing wise. Note the following
requirements:
requirements:
The MicroSOM internal power management contains a soft-start clamp that gradually
raises its internally generated power supplies once VIN_5V0 is applied. The soft-start
timing is set to be 800us (typ.). SNVS_3V0 must be applied well ahead of the internal
power rails. We recommend that SNVS_3V0 be applied no later than 200uS after
VIN_5V0.
raises its internally generated power supplies once VIN_5V0 is applied. The soft-start
timing is set to be 800us (typ.). SNVS_3V0 must be applied well ahead of the internal
power rails. We recommend that SNVS_3V0 be applied no later than 200uS after
VIN_5V0.
SNVS_3V0 must be applied before NVCC_EIM0, NVCC_SD2 and NVCC_SD3.
Alternatively, SNVS_3V0 can be shorted with those power supplies as long as they do
not exceed 3.3v (absolute maximum including overvoltage ripples).
Notice the HummingBoard design, where there is a single 3.2V power rail generated
from the 5V DC IN (either via LDO or external DC-DC), and that rail is directly applied to
VSNVS_3V0, NVCC_EIM0 together with the VIN_5V0.
Alternatively, SNVS_3V0 can be shorted with those power supplies as long as they do
not exceed 3.3v (absolute maximum including overvoltage ripples).
Notice the HummingBoard design, where there is a single 3.2V power rail generated
from the 5V DC IN (either via LDO or external DC-DC), and that rail is directly applied to
VSNVS_3V0, NVCC_EIM0 together with the VIN_5V0.