Computer Hardware User Manual

Chapter 3 Signals and Pinout Tables
COM 830 Reference Manual 29
PCIE3_TX+
PCIE3_TX-
PCI Express channel 4, Transmit Output
differential pair
O
PCIE
Supports PCI
Express Base
Specification,
Revision 1.0a
PCIE4_RX+
PCIE4_RX-
PCI Express channel 5, Receive Input
differential pair
I
PCIE
Supports PCI
Express Base
Specification,
Revision 1.0a
PCIE4_TX+
PCIE4_TX-
PCI Express channel 5, Transmit Output
differential pair
O
PCIE
Supports PCI
Express Base
Specification,
Revision 1.0a
PCIE5_RX+
PCIE5_RX-
PCI Express channel 6, Receive Input
differential pair
I
PCIE
Not available.
Used by
onboard Gigabit
Ethernet.
PCIE5_TX+
PCIE5_TX-
PCI Express channel 6, Transmit Output
differential pair
O
PCIE
Not available.
Used by
onboard Gigabit
Ethernet.
PCIE_CLK_RE
F+
PCIE_CLK_RE
F-
PCI Express Reference Clock output for all
PCI Express and PCI Express Graphics
Lanes
O
PCIE
PD 49.9R
Table 3-6. ExpressCard Support Pins Descriptions
Signal Description I/O PU/PD Comment
EXCD[0..1]_CPPE
#
ExpressCard capable card
request
I
3.3VSB
PU 8k2
3.3VSB
EXCD[0..1]_RST#
(EXCD[0..1]_PER
ST#)
ExpressCard Reset O 3.3V PU 10k
3.3V
Table 3-7. LPC Signal Descriptions
Signal Description I/O PU/PD Comment
LPC_AD[0:3] LPC multiplexed address, command and
data bus
I/O 3.3V
LPC_FRAME# LPC frame indicates the start of an LPC
cycle
O 3.3V
LPC_DRQ[0:1]# LPC serial DMA request I 3.3V PU 10k
3.3V
LPC_SERIRQ LPC serial interrupt I/O 3.3V PU 10k
3.3V
LPC_CLK LPC clock output - 33MHz nominal O 3.3V
Table 3-5. PCI Express Signal Descriptions [general purpose] (Continued)