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Chapter 2: Board Components
2–33
Components and Interfaces
February 2011
Altera Corporation
Arria II GX FPGA Development Board Reference Manual
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 2–37
lists the HSMC port A interface pin assignments, signal names, and
functions.
Table 2–37. HSMC Port A Pin Assignments, Schematic Signal Names, and Functions (Part 1 of 4)
Board
Reference
Description
Schematic Signal
Name
I/O Standard
Arria II GX
Device
Pin Number
J2.17
Transceiver TX bit 3
HSMA_TX_P3
1.5-V PCML
K31
J2.18
Transceiver RX bit 3
HSMA_RX_P3
L33
J2.19
Transceiver TX bit 3n
HSMA_TX_N3
K32
J2.20
Transceiver RX bit 3n
HSMA_RX_N3
L34
J2.21
Transceiver TX bit 2
HSMA_TX_P2
M31
J2.22
Transceiver RX bit 2
HSMA_RX_P2
N33
J2.23
Transceiver TX bit 2n
HSMA_TX_N2
M32
J2.24
Transceiver RX bit 2n
HSMA_RX_N2
N34
J2.25
Transceiver TX bit 1
HSMA_TX_P1
P31
J2.26
Transceiver RX bit 1
HSMA_RX_P1
R33
J2.27
Transceiver TX bit 1n
HSMA_TX_N1
P32
J2.28
Transceiver RX bit 1n
HSMA_RX_N1
R34
J2.29
Transceiver TX bit 0
HSMA_TX_P0
T31
J2.30
Transceiver RX bit 0
HSMA_RX_P0
U33
J2.31
Transceiver TX bit 0n
HSMA_TX_N0
T32
J2.32
Transceiver RX bit 0n
HSMA_RX_N0
U34
J2.33
Management serial data
HSMA_SDA
2.5-V
R1
J2.34
Management serial clock
HSMA_SCL
T1
J2.35
JTAG clock signal
JTAG_TCK
L24
J2.36
JTAG mode select signal
JTAG_TMS
N25
J2.37
JTAG data output
JTAG_HSMA_TDO
—
J2.38
JTAG data input
JTAG_HSMA_TDI
—
J2.39
Dedicated CMOS clock out
HSMA_CLKOUT0
P10
J2.40
Dedicated CMOS clock in
HSMA_CLKIN0
AP17
J2.41
Dedicated CMOS I/O bit 0
HSMA_D0
L1
J2.42
Dedicated CMOS I/O bit 1
HSMA_D1
R6
J2.43
Dedicated CMOS I/O bit 2
HSMA_D2
K1
J2.44
Dedicated CMOS I/O bit 3
HSMA_D3
M1
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