Apollo Carrier Board
User Manual
14
www.terasic.com
September 22, 2020
2.6
PCI Express
The Carrier board is designed to fit entirely into a PC motherboard with PCI Express Gen3 x4 via
Thunderbolt 3 Port. Utilizing built-in transceivers on a Stratix 10 device, it is able to provide a fully
integrated PCI Express-compliant solution for multi-lane (x1, x4) applications. With the PCI Express
hard IP block incorporated in the Stratix 10 device, it will allow users to implement simple and fast
protocol, as well as saving logic resources for logic application.
connection established between the Stratix 10 and PCI Express.
The PCI Express interface supports complete PCI Express Gen1 at 2.5Gbps/lane, Gen2 at
5.0Gbps/lane, and Gen3 at 8.0Gbps/lane protocol stack solution compliant to PCI Express base
specification 3.0 that includes PHY-MAC, data Link, and transaction layer circuitry embedded in PCI
Express hard IP blocks.
Figure 2-10 PCI Express Pin Connection
Table 2-7 QSP28A/B Pin Assignments, Schematic Signal Names, and Functions
Schematic
Signal Name
Description
I/O Standard
FMC
Pin Num.
Apollo S10
FPGA Pin Num.
PCIE_REFCLK_p
Reference clock input
LVDS
B20
PIN_AT41
PCIE_RX_p[0]
Receive bus
HSSI DIFFERENTIAL I/O
C6
PIN_BH41
PCIE_RX_p[1]
Receive bus
HSSI DIFFERENTIAL I/O
A2
PIN_BJ43
PCIE_RX_p[2]
Receive bus
HSSI DIFFERENTIAL I/O
A6
PIN_BG43
PCIE_RX_p[3]
Receive bus
HSSI DIFFERENTIAL I/O
A10
PIN_BE43
PCIE_TX_p[0]
Transmit bus
HSSI DIFFERENTIAL I/O
C2
PIN_BJ46
PCIE_TX_p[1]
Transmit bus
HSSI DIFFERENTIAL I/O
A22
PIN_BF45
PCIE_TX_p[2]
Transmit bus
HSSI DIFFERENTIAL I/O
A26
PIN_BG47
PCIE_TX_p[3]
Transmit bus
HSSI DIFFERENTIAL I/O
A30
PIN_BE47