Altera Stratix IV GX FPGA Development Board Manuel d'utilisateur télécharger pdf (Page 34)

2–26 Chapter 2: Board Components

General User Input/Output

Stratix IV GX FPGA Development Board August 2012 Altera Corporation

Reference Manual

Table 2–22 lists the crystal oscillators component references and manufacturing

information.

General User Input/Output

This section describes the user I/O interface to the FPGA, including the push buttons,

DIP switches, status LEDs, and character LCD.

User-Defined Push Buttons

The development board includes four user-defined push buttons—three general and

one CPU reset. For information on the system and safe reset push buttons, refer to

“Reset Configuration Push Button” on page 2–20.

Board references S3, S4, and S5 are push buttons that allow you to interact with the

Stratix IV GX device. When you press and hold down the push button, the device pin

is set to logic 0; when you release the push button, the device pin is set to logic 1.

There is no board-specific function for these general user push buttons.

Samtec HSMC

HSMB_CLK_OUT_P2

K10

LVDS or 2.5-V

LVDS output. Can also support two CMOS

outputs.

HSMB_CLK_OUT_N3

J10

Table 2–21. Stratix IV GX FPGA Development Board Clock Outputs (Part 2 of 2)

Connector Schematic Signal Name Pin I/O Standard Description

Table 2–22. Crystal Oscillator Component References and Manufacturing Information

(1)

Board

Reference

Description Manufacturer

Manufacturer

Part Number

Manufacturer Website

X1 125 MHz LVDS Saw Oscillator Epson

EG-2121CA

125.0000M-LGPNL3

www.eea.epson.com

156.25 MHz LVDS Saw

Oscillator

Epson

EG-2121CA

156.2500M-LHPNL3

www.eea.epson.com

148.5 MHz Voltage Controlled

LVDS Crystal Oscillator

Connor-Winfield V902-148.5MHz www.conwin.com

100 MHz LVDS Programmable

Crystal Oscillator

Silicon Labs 570FAB000433DG www.silabs.com

155.5 MHz LVPECL Saw

Oscillator

Epson

EG-2121CA

155.5200M-PGPNL3

www.eea.epson.com

X8 50 MHz Crystal Oscillator Epson

XG-1000CB

50.0000M-DCL3

www.eea.epson.com

X9 125 MHz Crystal Oscillator ECS ECS-3525-1250-B www.ecsxtal.com

Note for Table 2–22:

(1) The crystal oscillator whose component reference and manufacturing information on the engineering silicon board differ from the production

silicon board is listed in Table A–3 on page A–3.

1 2 ... 29 30 31 32 33 34 35 36 37 38 39 ... 81 82

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