DFI CR908-B - Manual (Page 25)

www.dfi .com Chapter 3 Hardware Installation
25
Chapter 3
Signal Pin# Pin Type Pwr Rail /Tolerance PU/PD Description
VCC_12V
A104~A109
B104~B109
C104~C109
D104~D109
Power Primary power input: +12V nominal. All available VCC_12V pins on the connector(s) shall be used.
VCC_5V_SBY B84~B87 Power
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 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, C1, C2, C5,
C8, C11, C14, C21, C31,
C41, C51, C60, C70, C73,
C76, C80, C84, C87, C90,
C93, C96, C100, C103,
C110, D1, D2, D5, D8,
D11, D14, D21, D31,
D51, D60, D67, D70,
D73, D76, D80, D84,
D87 D90 D93 D96
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