Altera Stratix IV E FPGA Development Board Uživatelský manuál stáhnout pdf (Strana 29)

Chapter 2: Board Components 2–21

Configuration, Status, and Setup Elements

May 2011 Altera Corporation Stratix IV E FPGA Development Board Reference Manual

On-Board Memory Headers

The on-board memory headers are provided to set the output impedance and I/O

voltage level for the QDR II+ and RLDRAM II memories. Table 2–16 shows the header

settings and its descriptions.

Table 2–19 lists the on-board memory header component references and

manufacturing information.

Reset Configuration Push-button Switch

The reset configuration push-button switch (S1), is an input to the MAX

II CPLD

EPM2210 System Controller. The push-button switch forces a reconfiguration of the

FPGA from flash memory. The location in the flash memory is based on the rotary

switch setting when the configuration push-button is released. Valid settings include

0 and 1 on the two pages in flash memory reserved for FPGA designs.

Table 2–20 lists the reset configuration push-button switches component reference

and manufacturing information.

Table 2–18. On-Board Memory Header Settings

Board

Reference

Schematic Signal Name Description Default

QDRII_ZQ

Shunt on pins 1-2: Min output impedance

Shunt on pins 3-4: 50-Ω output impedance

Shunt on pins 5-6: 60-Ω output impedance

Shunt on pins 3-4

J11

—

Shunt ON: QDR II VDDQ at 1.8 V

Shunt OFF: QDR II VDDQ at 1.5 V

Shunt OFF

J18

—

Shunt ON: RLDRAMII VDDQ at 1.8 V

Shunt OFF: RLDRAMII VDDQ at 1.5 V

Shunt OFF

J28

RLDC_ZQ

Shunt on pins 1-2: Max output impedance

Shunt on pins 3-4: 60-Ω output impedance

Shunt on pins 5-6: 50-Ω output impedance

Shunt OFF

J29 DDR3_DIMM_TEST[5:1] User-defined test pins for the DDR3 (optional). Shunt OFF

Table 2–19. On-Board Memory Header Component References and Manufacturing Information

Board

Reference

Device Description Manufacturer

Manufacturer

Part Number

Manufacturer Website

J7, J28 3×2 vertical header Samtec TSW-103-07-L-D www.samtec.com

J11, J18 2×1 2 mm pitch vertical header Samtec TMM-102-01-S-S www.samtec.com

J29 2×5 100 mil pitch vertical header Samtec TSM-105-01-T-DV-TR www.samtec.com

Table 2–20. Reset Configuration Push-Button Switches Component Reference and Manufacturing Information

Board

Reference

Description Manufacturer

Manufacturer

Part Number

Manufacturer Website

S1 Push-Button switch Panasonic EVQPAC07K

www.panasonic.com/industrial/components/

components.html

1 2 ... 24 25 26 27 28 29 30 31 32 33 34 ... 71 72

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