Altera Cyclone V GX FPGA Development Board - Manual (Page 36)

2–28 Chapter 2: Board Components
Components and Interfaces
Cyclone V GX FPGA Development Board May 2013 Altera Corporation
Reference Manual
The HSMC connector has a total of 172 pins, including 120 signal pins, 39 power pins,
and 13 ground pins. The ground pins are located between the two rows of signal and
power pins, acting both as a shield and a reference. The HSMC host connector is
based on the 0.5 mm-pitch QSH/QTH family of high-speed, board-to-board
connectors from Samtec. There are three banks in this connector. Bank 1 has every
third pin removed as done in the QSH-DP/QTH-DP series. Bank 2 and bank 3 have
all the pins populated as done in the QSH/QTH series.
Figure 2–8 shows the bank arrangement of signals with respect to the Samtec
connector's three banks.
The HSMC interface has programmable bi-directional I/O pins that can be used as
2.5-V LVCMOS, which is 3.3-V LVTTL-compatible. These pins can also be used as
various differential I/O standards including, but not limited to, LVDS, mini-LVDS,
and RSDS with up to 17 full-duplex channels.
1 As noted in the High Speed Mezzanine Card (HSMC) Specification manual, LVDS and
single-ended I/O standards are only guaranteed to function when mixed according to
either the generic single-ended pin-out or generic differential pin-out.
Table 2–24 lists the HSMC interface pin assignments, signal names, and functions.
Figure 2–8. HSMC Signal and Bank Diagram
Bank 3
Power
D(79.40)
-or-
LVDS
CLKIN2, CLKOUT2
Bank 2
Power
D(39:0)
-or-
D[3:0] + LVDS
CLKIN1, CLKOUT1
Bank 1
8 TX Channels CDR
8 RX Channels CDR
JTAG
SMB
CLKIN0, CLKOUT0
Table 2–24. HSMC Interface Pin Assignments, Schematic Signal Names, and Functions (Part 1 of 4)
Board
Reference (J1)
Schematic Signal Name
Cyclone V GX
Pin Number
I/O Standard Description
17 HSMA_TX_P3 K4 1.5-V PCML Transceiver TX bit 3
18 HSMA_RX_P3 L2 1.5-V PCML Transceiver RX bit 3
19 HSMA_TX_N3 K3 1.5-V PCML Transceiver TX bit 3n
20 HSMA_RX_N3 L1 1.5-V PCML Transceiver RX bit 3n
21 HSMA_TX_P2 M4 1.5-V PCML Transceiver TX bit 2
22 HSMA_RX_P2 N2 1.5-V PCML Transceiver RX bit 2
23 HSMA_TX_N2 M3 1.5-V PCML Transceiver TX bit 2n
24 HSMA_RX_N2 N1 1.5-V PCML Transceiver RX bit 2n