Altera Arria V GX FPGA Development Board Manuel d'utilisateur télécharger pdf (Page 46)

2–36 Chapter 2: Board Components

General User Input/Output

Arria V GX FPGA Development Board November 2013 Altera Corporation

Reference Manual

Figure 2–7 is an excerpt from the LMH0384SQ cable equalizer data sheet that shows

the SDI cable equalizer. On this development board, the output is a single-ended

output, with the negative channel driving a load local to the board.

Table 2–39 summarizes the SDI video input interface pin assignments, signal names,

and functions.

Table 2–40 lists the SDI connector component reference and manufacturing

information.

Figure 2–7. SDI Cable Equalizer

BYPASS

MUTE

REF

1.0 μF

75 Ω

37.4 Ω

1.0 μF

SDI

SDO

MUTE

REF

BYPASS

AEC+

AEC–

75 Ω

MUTE

Coaxial Cable

SDI Adaptive

Cable Equalizer

To FPGA

3.9 nH

Table 2–39. SDI Video Input Interface Pin Assignments, Schematic Signal Names, and Functions

Board Reference

(U23)

Schematic

Signal Name

Arria V GX FPGA

Pin Number

I/O Standard Description

SDI_A_EQIN_P1

— 3.3-V SDI video cable equalizer input P

SDI_A_EQIN_N1

— 3.3-V SDI video cable equalizer input N

SDI_A_RX_BYPASS

P19 2.5-V Equalizer bypass enable

SDI_A_RX_P

AJ1 1.4-V PCML SDI video output P

SDI_A_RX_N

AJ2 1.4-V PCML SDI video output N

SDI_A_RX_EN

AK34 2.5-V Device enable

SDI_A_RX_CDN

—3.3-V

SDI video cable equalizer input carrier

detect output to LED

Table 2–40. SDI Connector Component Reference and Manufacturing Information

Board

Reference

Description Manufacturer

Manufacturing

Part Number

Manufacturer

Website

U24

3-Gbps HD/SD SDI cable driver with

cable detect

National Semiconductor LMH0303SQx www.national.com

U23

3-Gbps HD/SD SDI adaptive cable

equalizer

National Semiconductor LMH0384SQ www.national.com

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