Ampro Corporation XTX 820 manual PCI Express Interface J2, PCI Express/ExpressCards

Chapter 3 Hardware

PCI Express Interface (J2)

The J2 connector has 100 pins and is used for PCI Express, Serial ATA (SATA), USB, ExpressCard, AC'97/HDA (High Definition Audio), and LPC bus.

PCI Express/ExpressCards

The I/O Hub (82801FBM) provides four x1 PCI Express lanes which can be configured to support PCI Express edge cards or two ExpressCards. If ExpressCards are used, one dedicated USB port and one dedicated PCI Express lane are required for each ExpressCard and SMBus is optional.

Table 3-9. PCI Express Interface Pin/Signal Descriptions (J2)

J2	Signal	Description
Pin #
69	PCIE0_RX-	PCI Express Lane 0, Receive Input, Negative Differential Line
71	PCIE0_RX+	PCI Express Lane 0, Receive Input, Positive Differential Line
75	PCIE0_TX-	PCI Express Lane 0, Transmit Output, Negative Differential Line
77	PCIE0_TX+	PCI Express Lane 0, Transmit Output, Positive Differential Line
53	PCIE1_RX-	PCI Express Lane 1, Receive Input, Negative Differential Line
55	PCIE1_RX+	PCI Express Lane 1, Receive Input, Positive Differential Line
59	PCIE1_TX-	PCI Express Lane 1, Transmit Output, Negative Differential Line
61	PCIE1_TX+	PCI Express Lane 1, Transmit Output, Positive Differential Line
39	PCIE2_RX-	PCI Express Lane 2, Receive Input, Negative Differential Line
37	PCIE2_RX+	PCI Express Lane 2, Receive Input, Positive Differential Line
33	PCIE2_TX-	PCI Express Lane 2, Transmit Output, Negative Differential Line
31	PCIE2_TX+	PCI Express Lane 2, Transmit Output, Positive Differential Line
17	PCIE3_RX-	PCI Express Lane 3, Receive Input, Negative Differential Line
15	PCIE3_RX+	PCI Express Lane 3, Receive Input, Positive Differential Line
11	PCIE3_TX-	PCI Express Lane 3, Transmit Output, Negative Differential Line
9	PCIE3_TX+	PCI Express Lane 3, Transmit Output, Positive Differential Line
5	PCIE_CLK_REF-	PCI Express Reference Clock, Negative Differential Line
3	PCIE_CLK_REF+	PCI Express Reference Clock, Positive Differential Line
41	EXC0_CPPE*	ExpressCard (capable card) Request (for slot 1)
43	EXC0_RST*	ExpressCard Reset Slot 1
21	EXC1_CPPE*	ExpressCard (capable card) Request (for slot 2)
23	EXC1_RST*	ExpressCard Reset (for slot 2)
63	PCE_WAKE*	PCI Express Wake Event

Notes: The shaded area denotes power or ground. The signals marked with * = Negative true logic.

XTX 820 Reference Manual 29