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Functional Description
MEN Mikro Elektronik GmbH
20
Table 4.
Signal mnemonics of 114-pin board-to-board connector
Signal
Direction
Function
Power
+3.3V
out
+3.3V power supply
+5V
out
+5V power supply
GND
-
Digital ground
IDE SATA
S,
SATA0_RX-
in
Differential pair of SATA receive lines, port 0
S,
SATA0_TX-
out
Differential pair of SATA transmit lines, port 0
S,
SATA1_RX-
in
Differential pair of SATA receive lines, port 1
S,
SATA1_TX-
out
Differential pair of SATA transmit lines, port 1
USB
USB_D[2]+,
USB_D[2]-
in/out
Differential pair of USB lines, port 2
USB_D[3]+,
USB_D[3]-
in/out
Differential pair of USB lines, port 3
USB_D[4]+,
USB_D[4]-
in/out
Differential pair of USB lines, port 4, optional
USB_D[5]+,
USB_D[5]-
in/out
Differential pair of USB lines, port 5, optional
USB_RST#
in
Platform reset from CPU, resets all USB ports
Other
SMB_CLK
out
System Management Bus clock
SMB_DATA
in/out
System Management Bus data