Chapter 3 – DFI BT9A3 User Manual
Page 20
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Chapter 3 Hardware Installation
20
Chapter 3
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Signal
Pin#
Pin Type
Pwr Rail /Tolerance
BT9A3
Carrier Board
Description
VCC_12V
A104~A109
B104~B109
Power
4.75V – 20.0V
4.75V – 20.0V
Primary power input: +12V nominal. All available VCC_12V pins on the connector(s) shall be used.
The module supplies a wide range of power from 4.75V to 20.0V.
VCC_5V_SBY
B84~B87
Power
4.75V - 5.25V
4.75V - 5.25V
Standby power input: +5.0V nominal. 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.
VCC_RTC
A47
Power
2.0V - 3.3V
2.0V - 3.3V
Real-time clock circuit-power input. Nominally +3.0V.
GND
A1, A11, A21, A31, A41,
A51, A57, A60, A66, A70,
A80, A90, A100, A110, B1,
B11, B21 ,B31, B41, B51,
B60, B70, B80, B90, B100,
B110
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.
Power and GND Signal Descriptions