Altera Arria V GX Starter Board - Manual (Page 40)

2–32 Chapter 2: Board Components
Components and Interfaces
Arria V GX Starter Board November 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 2–10 shows the bank arrangement of signals with respect to the Samtec
connector's three banks.
The HSMC interface has programmable bidirectional 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 2–34 lists the HSMC port A interface pin assignments, signal names, and
functions.
Figure 2–10. 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 2–34. HSMC Port A Pin Assignments, Schematic Signal Names, and Functions (Part 1 of 4)
Board
Reference (J13)
Schematic Signal Name
Arria V GX
Pin Number
I/O Standard Description
1 HSMA_TX_P7 AA3 1.5-V PCML Transceiver TX bit 7
2 HSMA_RX_P7 AB1 1.5-V PCML Transceiver RX bit 7
3 HSMA_TX_N7 AA4 1.5-V PCML Transceiver TX bit 7n
4 HSMA_RX_N7 AB2 1.5-V PCML Transceiver RX bit 7n
5 HSMA_TX_P6 W3 1.5-V PCML Transceiver TX bit 6
6 HSMA_RX_P6 Y1 1.5-V PCML Transceiver RX bit 6
7 HSMA_TX_N6 W4 1.5-V PCML Transceiver TX bit 6n