MSC Technologies Avnet COM Express CXC-BT, Руководство пользователя

Страница: 32 / 84

MSC CXC-BT User Manual
32 / 84
2.10.18
Power and GND
Signal Pin
Type Signal
Level Power
Rail Remark /
Tolerance PU/PD/SR Description Source / Target
VCC_12V Power 12V (±5%) Primary power input: +12V (±5%) Voltage
Regulators
VCC_5V_SBY Power 5V (±5%) Standby power input: +5.0V (±5%)
If VCC5_SBY is used, all available VCC_5V_SBY pins on the
connector(s) shall be used.
Only used for standby and suspend functions.
May be left unconnected if these functions are not used in the
system design.
Standby functions are also possible with VCC_12V rail only, but
would result in higher standby power. VCC3.3V SUS
regulator
VCC_RTC Power Real-time clock circuit-power input : +3.0V (+2.5V to +3.3V) BT SOC
GND Power Ground - DC power and signal and AC signal return path. All
available GND connector pins shall be used and tied to Carrier
Board GND plane.