原标题：Altera Arria II GX FPGA开发方案

　　本文介绍了Arria II GX FPGA亮点，高速收发器特性，Arria II GX FPGA架构以及Arria II GX FPGA 开发套件主要特性，开发板方框图，详细的开发板电路图和材料清单(BOM)。

　　Arria II FPGAs: Cost-Optimized, Lowest Power 6G Transceiver FPGAs

　　The Arria® II GX device family is designed specifically for ease-of-use. The cost-optimized, 40-nm device family architecture features a low-power, programmable logic engine and streamlined transceivers and I/Os. Common interfaces, such as the Physical Interface for PCI Express® (PIPE) (PCIe®), Ethernet, and DDR3 memory are easily implemented in your design with the Quartus® II software, the SOPC Builder design software, and a broad library of hard and soft intellectual property (IP) solutions from Altera®. The Arria II GX device family makes designing for applications requiring transceivers operating at up to 6.375 Gbps fast and easy.

　　Arria II GX FPGA亮点：

　　The Arria II GX device features consist of the following highlights:

　　■ 40-nm, low-power FPGA engine

　　■ Adaptive logic module (ALM) offers the highest logic efficiency in the industry

　　■ Eight-input fracturable look-up table (LUT)

　　■ Memory logic array blocks (MLABs) for efficient implementation of small FIFOs

　　■ High-performance digital signal processing (DSP) blocks up to 380 MHz

　　■ Configurable as 9 × 9-bit, 12 × 12-bit, 18 × 18-bit, and 36 × 36-bit full-precision multipliers as well as 18 × 36-bit high-precision multiplier

　　■ Hardcoded adders, subtractors, accumulators, and summation functions

　　■ Fully-integrated design flow with the MATLAB and DSP Builder software from Altera

　　■ Maximum system bandwidth

　　■ Up to 16 full-duplex clock data recovery (CDR)-based transceivers supporting rates between 155 Mbps and 6.375 Gbps

　　■ Dedicated circuitry to support physical layer functionality for popular serial protocols, including PCIe Gen1, Gbps Ethernet, Serial RapidIO® (SRIO), Common Public Radio Interface (CPRI), OBSAI, SD/HD/3G/ASI Serial Digital Interface (SDI), XAUI, HiGig/HiGig+, SATA/Serial Attached SCSI (SAS), GPON, SerialLite II, Fiber Channel, and SONET/SDH

　　■ Complete PIPE protocol solution with an embedded hard IP block that provides physical interface and media access control (PHY/MAC) layer, Data Link layer, and Transaction layer functionality

　　■ Optimized for high-bandwidth system interfaces

　　■ Up to 612 user I/O pins arranged in up to 12 modular I/O banks that support a wide range of single-ended and differential I/O standards

　　■ High-speed LVDS I/O support with serializer/deserializer (SERDES) and dynamic phase alignment (DPA) circuitry at data rates from 150 Mbps to 1.25 Gbps

　　■ Low power

　　■ Patented architectural power reduction techniques

　　■ Per-channel transceiver power consumption is approximately 100 mW under typical conditions at 3.125 Gbps

　　■ Power optimizations integrated into the Quartus II development software

　　■ Advanced usability and security features

　　■ Parallel and serial configuration options

　　■ On-chip series termination (RS OCT) and differential I/O termination

　　■ 256-bit advanced encryption standard (AES) programming file encryption for design security with volatile and non-volatile key storage options

　　■ Robust portfolio of IP for processing, serial protocols, and memory interfaces

　　■ Low cost, easy-to-use development kits featuring high-speed mezzanine connectors (HSMC) Emulated LVDS output support with a data rate of up to 945 Mbps

　　高速收发器特性：

　　High-Speed Transceiver Features

　　Arria II GX devices integrate up to 16 transceivers on a single device. The transceiver

　　block is optimized for cost and power consumption. Arria II GX transceivers support the following features:

　　■ Configurable pre-emphasis and equalization, and adjustable output differential voltage

　　■ Flexible and easy-to-configure transceiver datapath to implement proprietary protocols

　　■ Signal integrity features

　　■ Programmable transmitter pre-emphasis to compensate for inter-symbol interference (ISI)

　　■ User-controlled five-stage receiver equalization with up to 7 dB of high-frequency gain

　　■ On-die power supply regulators for transmitter and receiver PLL charge pump and voltage-controlled oscillator (VCO) for superior noise immunity

　　■ Calibration circuitry for transmitter and receiver on-chip termination (OCT) resistors

　　■ Diagnostic features

　　■ Serial loopback from the transmitter serializer to the receiver CDR for transceiver physical coding sublayer (PCS) and physical media attachment (PMA) diagnostics

　　■ Parallel loopback from the transmitter PCS to the receiver PCS with built-in self test (BIST) pattern generator and verifier

　　■ Reverse serial loopback pre- and post-CDR to transmitter buffer for physical link diagnostics

　　■ Loopback master and slave capability in PCIe hard IP blocks

　　■ Support for protocol features such as MSB-to-LSB transmission in a SONET/SDH configuration and spread-spectrum clocking in a PCIe Configuration

　　Arria II GX Device Features

　　图1。Arria II GX FPGA架构

　　Arria II GX and GZ FPGAs are backed by intellectual property (IP) functions, design guidelines, and collateral to help you design with ease in several market segments, including:

　　Wireless

　　Wireline

　　Broadcast

　　Military

　　Arria II GX FPGA 开发套件

　　The Altera® Arria® II GX FPGA Development Kit delivers a complete system-level design environment that includes both the hardware and software needed to immediately begin developing FPGA designs. With this PCI-SIG-compliant board and a one-year license for Quartus® II design software, you can:

　　Develop and test PCI Express 1.0 (up to x8 lane) designs

　　Develop and test memory subsystems consisting of DDR2 and/or DDR3 memory

　　Develop and test designs based on other Arria II GX supported protocol interfaces such as Gigabit Ethernet, SDI, CPRI, OBSAI, SAS/SATA, and Serial RapidIO®. Many of these are supported by taking advantage of this board's modular capability through the high-speed mezzanine card (HSMC) connectors and over 20 different HSMC connectors available through Altera partners.

　　开发套件包括：

　　Development Kit Contents

　　The Arria II GX FPGA Development Kit is RoHS compliant and features the following:

　　Arria II GX EP2AGX125EF35 FPGA in the 1152-pin fine pitch BGA package

　　124,100 logic elements (LEs)

　　49,640 adaptive logic modules (ALMs)

　　8,121 Kb on-chip memory

　　12 high-speed transceivers

　　6 phase-locked loops (PLLs)

　　576 18x18 multipliers

　　0.9V core power

　　Max® II EPM2210F256 CPLD in the 256-pin Fine Pitch BGA Package

　　2.5V core power

　　On-board ports

　　One HSMC expansion port

　　One gigabit Ethernet port

　　On-board memory

　　128-MB 16-bit DDR3 device

　　1-GB 64-bit DDR2 SODIMM

　　2-MB SSRAM

　　64-MB flash

　　FPGA configuration circuitry

　　MAX II CPLD and flash fast passive parallel configuration

　　On-board USB-Blaster™ circuitry using the Quartus II Programmer

　　On-board clocking circuitry

　　Four on-board oscillators

　　100 MHz

　　Programmable oscillator, default frequency 125 MHz

　　Programmable oscillator, default frequency 100 MHz

　　155.52 MHz

　　SMA connectors for external LVPECL clock input

　　SMA connector for clock output

　　General user I/O

　　LEDs/displays

　　Four user LEDs

　　Two-line character LCD display

　　One configuration-done LED

　　One HSMC interface transmit/receive LED (Tx/Rx)

　　Three PCI Express LEDs

　　Five Ethernet LEDs

　　Push-buttons

　　One user reset (CPU reset)

　　One MAX II CPLD reset

　　One load image (program FPGA from flash)

　　One image select (select image to load from flash)

　　Two general user push-buttons

　　DIP switches

　　Four user DIP switches

　　Eight MAX II device control DIP switches

　　Power supply

　　14-V to 20-V DC input

　　PCI Express edge connector power

　　On-board power measurement circuitry

　　Mechanical

　　PCI Express full-length standard-height (8.48” x 4.376”)

　　PCI Express chassis or bench-top operation

　　Arria II GX FPGA Development Kit CD-ROM

　　Design examples

　　Board Update Portal, featuring the Nios® II processor web server and remote system update

　　Board test system

　　Complete documentation (see Table 2)

　　Altera's complete Design Suite DVD

　　Quartus II Software Development Kit Edition, includes support for Arria II GX FPGAs

　　Includes one-year license

　　Nios II Embedded Design Suite

　　MegaCore® IP Library includes PCI Express, Triple Speed Ethernet, SDI, and DDR3 High-Performance Controller IP cores

　　IP evaluation available through OpenCore Plus

　　Power adaptor and cables

　　Arria II GX FPGA Development Board

　　图2。Arria II GX FPGA 开发板外形图

　　图3。Arria II GX FPGA 开发板方框图