LatticeECP3设计的FPGA视频协议开发技术

本文介绍了LatticeECP3 FPGA系列主要特性，LatticeECP3-35简化方框图以及LatticeECP3视频协议板主要特性，方框图和详细的电路图。

Lattice 公司的LatticeECP3 FPGA系列能提供高性能的特性如增强的DSP架构，高速SERDES和高速源同步接口。LatticeECP3系列采用65nm技术，有149K逻辑单元和支持多达486个用户I/O，可提供多达320个18x18乘法器以及各种并行I/O标准。广泛用于批量生产的对成本和功耗敏感的有线和无线基础设备以及各种多媒体设备。

LatticeECP3主要特性：

Higher Logic Density for Increased System Integration

• 17K to 149K LUTs

• 133 to 586 I/Os

Embedded SERDES

• 150 Mbps to 3.2 Gbps for Generic 8b10b, 10-bit SERDES, and 8-bit SERDES modes

• Data Rates 230 Mbps to 3.2 Gbps per channel for all other protocols

• Up to 16 channels per device: PCI Express, SONET/SDH, Ethernet (1GbE, SGMII, XAUI), CPRI, SMPTE 3G and Serial RapidIO

sysDSP™

• Fully cascadable slice architecture

• 12 to 160 slices for high performance multiply and accumulate

• Powerful 54-bit ALU operations

• Time Division Multiplexing MAC Sharing

• Rounding and truncation

• Each slice supports

–Half 36x36, two 18x18 or four 9x9 multipliers

–Advanced 18x36 MAC and 18x18 Multiply-Multiply-Accumulate (MMAC) operations

Flexible Memory Resources

• Up to 6.85Mbits sysMEM™ Embedded Block RAM (EBR)

• 36K to 303K bits distributed RAM

sysCLOCK Analog PLLs and DLLs

• Two DLLs and up to ten PLLs per device

Pre-Engineered Source Synchronous I/O

• DDR registers in I/O cells

• Dedicated read/write levelling functionality

• Dedicated gearing logic

• Source synchronous standards support

–ADC/DAC, 7:1 LVDS, XGMII

–High Speed ADC/DAC devices

• Dedicated DDR/DDR2/DDR3 memory with DQS support

• Optional Inter-Symbol Interference (ISI)  correction on outputs

Programmable sysI/O™ Buffer Supports Wide Range of Interfaces

• On-chip termination

• Optional equalization filter on inputs

• LVTTL and LVCMOS 33/25/18/15/12

• SSTL 33/25/18/15 I, II

• HSTL15 I and HSTL18 I, II

• PCI and Differential HSTL, SSTL

• LVDS, Bus-LVDS, LVPECL, RSDS, MLVDS

Flexible Device Configuration

• Dedicated bank for configuration I/Os

• SPI boot flash interface

• Dual-boot images supported

• Slave SPI

• TransFR™ I/O for simple field updates

• Soft Error Detect embedded macro

System Level Support

• IEEE 1149.1 and IEEE 1532 compliant

• Reveal Logic Analyzer

• ORCAstra FPGA configuration utility

• On-chip oscillator for initialization & general use

• 1.2V core power supply

LatticeECP3™系列选择指引表：

图1。LatticeECP3-35简化方框图（顶层）

LatticeECP3视频协议板

LatticeECP3 Video Protocol Board
The LatticeECP3™ FPGA family includes many features for video applications. For example, DisplayPort, SMPTE standards (SD-SDI, HD-SDI and 3G-SDI), DVB-ASI, DVI and HDMI can be implemented with 16 channels of embedded SERDES/PCS. 7:1 LVDS video interfaces like ChannelLink and CameraLink can be supported by the generic DDRX2 mode on the I/O pins. When configuring to TRLVDS mode, the I/O pins on banks 0 and 1 can also be used to receive the TMDS signals of DVI or HDMI video standard.

This user’s guide describes revision C of the LatticeECP3 Video Protocol Board featuring the LatticeECP3 LFE3-95E-7FN1156C FPGA device. The stand-alone evaluation PCB provides a functional platform for development and rapid prototyping of many different video applications.

图2。LatticeECP3视频协议板外形图-Rev.C

主要特性：

• Video interfaces for interconnection to video standard equipment

• Allow the demonstration of SD/HD/3G-SDI, DisplayPort and PCI Express (x4) interfaces using SERDES channels

• High speed Mezzanine connector connected to SERDES channels for future expansion

• Allows the demonstration of LVDS video standards – ChannelLink and CameraLink

• Allows control of SERDES PCS registers using the Serial Client Interface (ORCAstra)

• Allows the demonstration of receiving TMDS signals using the DVI interface

• On-board Boot Flash with Serial SPI Flash memory device

• Shows interoperation with high performance DDR2 memory components

• Driver-based “run-time” device configuration capability via an ORCAstra or RS232 interface

• SMAs for external high-speed clock / PLL inputs

• Switches, LEDs and LCD display header for demo purposes

• Mictor connector for using Logic Analyzer in the debugging phase

• Input connection for lab-power supply

• Power connections and power sources

• ispVM™ programming support

• On-board and external reference clock sources

• Various high-speed layout structures

• User-defined input and output points

• Performance monitoring via test headers, LEDs and switches

图3。LatticeECP3视频协议板-Rev. C功能框图

图4。DisplayPort 视频接口方框图

图5。LatticeECP3视频协议板方框图

图6。LatticeECP3视频协议板电路图-电源

图7。LatticeECP3视频协议板电路图-电源管理

图8。LatticeECP3视频协议板电路图-FPGA电源

图9。LatticeECP3视频协议板电路图-FPGA配置

图10。LatticeECP3视频协议板电路图-SERDES

图11。LatticeECP3视频协议板电路图-DDR2存储器

图12。LatticeECP3视频协议板电路图-DVVLCD/RS232

图13。LatticeECP3视频协议板电路图-通路/照相机连接

图14。LatticeECP3视频协议板电路图-TI ADC/CLOCK

图15。LatticeECP3视频协议板电路图-LED/开关

图16。LatticeECP3视频协议板电路图-SDI驱动/均衡器

图17。LatticeECP3视频协议板电路图-SDI基准时钟控制

图18。LatticeECP3视频协议板电路图-SRI Rx基准时钟

图19。LatticeECP3视频协议板电路图-SRI Tx基准时钟

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