Express-BD7
Pinouts and Signal Descriptions
15
Signal
Pin
Description
I/O
PU/PD
Comment
PC
PCIE_TX10-
A77
A78
PCI Express channel 10, Transmit
Output differential pair.
O PCIE
AC coupled on Module
PC
PCIE_RX10-
B77
B78
PCI Express channel 10, Receive
Input differential pair.
I PCIE
AC coupled off Module
PC
PCIE_TX11-
A81
A82
PCI Express channel 11, Transmit
Output differential pair.
O PCIE
AC coupled on Module
PC
PCIE_RX11-
B81
B82
PCI Express channel 11, Receive
Input differential pair.
I PCIE
AC coupled off Module
PC
PCIE_TX12-
A39
A40
PCI Express channel 12, Transmit
Output differential pair.
O PCIE
AC coupled on Module
PC
PCIE_RX12-
B39
B40
PCI Express channel 12, Receive
Input differential pair.
I PCIE
AC coupled off Module
PC
PCIE_TX13-
A36
A37
PCI Express channel 13, Transmit
Output differential pair.
O PCIE
AC coupled on Module
PC
PCIE_RX13-
B36
B37
PCI Express channel 13, Receive
Input differential pair.
I PCIE
AC coupled off Module
PC
PCIE_TX14-
A25
A26
PCI Express channel 14, Transmit
Output differential pair.
O PCIE
AC coupled on Module
PC
PCIE_RX14-
B25
B26
PCI Express channel 14, Receive
Input differential pair.
I PCIE
AC coupled off Module
PC
PCIE_TX15-
A22
A23
PCI Express channel 15, Transmit
Output differential pair.
O PCIE
AC coupled on Module
PC
PCIE_RX15-
B22
B23
PCI Express channel 15, Receive
Input differential pair.
I PCIE
AC coupled off Module
PCIE_
PCIE_CLK_REF-
A88
A89
PCI Express Reference Clock
output for all PCI Express and PCI
Express Graphics Lanes.
O PCIE
3.3.5.
LPC Bus
Signal
Pin
Description
I/O
PU/PD
Comment
LPC_AD[0:3] B4-B7 LPC multiplexed address, command
and data bus
I/O 3.3V
Chipset has internal pull-up
LPC_FRAME# B3
LPC frame indicates the start of an
LPC cycle
O 3.3V
LPC_DRQ0#
LPC_DRQ1#
B8
B9
LPC serial DMA request
I 3.3V
Platform has internal PU
LPC_SERIRQ A50
LPC serial interrupt
I/O OD
3.3V
PU 8.2k
3.3V
LPC_CLK
B10
LPC clock output –33MHz nominal
O 3.3V
Note:
eSPI and LPC buses are muxed. Express-BD7 module only supports LPC interface.
3.3.6. USB
Signal
Pin
Description
I/O
PU/PD
Comment
USB0+
USB0-
A46
A45
USB differential data pairs for Port 0
I/O
3.3VSB
USB 1.1/ 2.0 compliant