Achronix Speedster22i HD1000 Development Kit User Guide - Manual (Page 38)

38 UG034, July 1, 2014
Signal Name SerDes No
Pin on HD1000
(U33)
Pin on PCIe x8
Finger (J4)
PCIE_TXN4 C15 A30
PCIE_RXP5 5 G16 B23
PCIE_RXN5 F16 B24
PCIE_TXP5 A16 A25
PCIE_TXN5 B16 A26
PCIE_RXP6 6 F17 B19
PCIE_RXN6 E17 B20
PCIE_TXP6 B17 A21
PCIE_TXN6 C17 A22
PCIE_RXP7 7 G18 B14
PCIE_RXN7 F18 B15
PCIE_TXP7 A18 A16
PCIE_TXN7 B18 A17
PCIE_MAXOUT_P
(SerDes Ref Clock)
M25
M26
J25
J26
Selected using U57
PCIE_MAXOUT_N
(SerDes Ref Clock)
N25
N26
K25
K26
USB (U54, U41)
There are two USB connectors on the board, U54 and U41. You can use the USB (U54)
interface for communicating with the board. This interface lets you access the JTAG interface
pins on the HD1000. In addition, information is transferred from the board to the
development PC. You can use this information for further debug, development or application
actions. These two USB connectors can be seen in Figure 11. The HD1000 (U33) controls the
communication between the USB port (U54) and the development PC. The development PC
and the MCU (U35) communicate over U41. Table 9 and Table 10 show the connections
between the U54 and HD1000 and U41 and the MCU.
Table 9: ACX-BRD-HD1000-100G USB Interface Connections (HD1000)
Table 10: ACX-BRD-HD1000-100G USB Interface Connections (MCU)
USB Connector (U54) HD1000 (U33)
Signal Name Pin Signal Name Pin
D+ 3 UART_TXD BB50
D- 2 UART_RXD BB51
USB Connector (U41) Microcontroller – Atmega2560 (U35)
Signal Name Pin Signal Name Pin
D+ 3 AVR_RXD 2
D- 2 AVR_TXD 3