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Memory, Memory –47 – Altera Stratix IV GX FPGA Development Board User Manual

Page 55

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Chapter 2: Board Components

2–47

Memory

August 2012

Altera Corporation

Stratix IV GX FPGA Development Board

Reference Manual

Figure 2–14

shows the SDI cable equalizer.

Memory

This section describes the board’s memory interface support, signal names, types, and
connectivity relative to the Stratix IV GX device. The board has the following memory
interfaces:

DDR3 bottom port

DDR3 top port

QDRII+ top port 0

QDRII+ top port 1

SSRAM

Flash

f

For more information about the memory interfaces, refer to the

External Memory

Interface Handbook

.

U2.7

Bypass enable

SDI_RX_BYPASS

2.5-V

T4

U2.14

Device enable

SDI_RX_EN

2.5-V

M6

(Automatically driven

by carrier detect)

Table 2–45. SDI Video Input Interface Pin Assignments, Schematic Signal Names, and Functions (Part 2 of 2)

Board

Reference

Description

Schematic

Signal Name

I/O Standard

MAX II CPLD EPM2210

System Controller

Pin Number

Stratix IV GX Device

Pin Number

Figure 2–14. SDI Cable Equalizer

BYPASS

MUTE

REF

1.0

μF

75

Ω

37.4

Ω

1.0

μF

1.0

μF

CD

SDI

SDI

SDO

SDO

CD

MUTE
MUTE

REF

BYPASS

AEC+

AEC–

75

Ω

MUTE

Coaxial Cable

LMH0344 3G SDI

Adaptive Cable

Equalizer

To FPGA

3.9 nH