Ssram, Ssram –35 – Altera 100G Development Kit, Stratix IV GT Edition User Manual

Page 43

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Chapter 2: Board Components

2–35

SSRAM

September 2010

Altera Corporation

100G Development Kit, Stratix IV GT Edition Reference Manual

Table 2–25

shows the flash memory map.

1

For more information on the flash memory map, refer to the

100G Development Kit,

Stratix IV GT Edition User Guide

.

Table 2–26

lists the flash memory device component reference and manufacturing

information.

SSRAM

The Synchronous Static Random Access Memory (SSRAM) device consists of a single
standard synchronous SRAM, providing 2 Mbyte with a 36-bit data bus. This device is
part of the shared FSM bus, which connects to the flash memory, SSRAM, and the
MAX

II CPLD EPM2210 System Controller.

The device speed is 250 MHz single-data-rate. There is no minimum speed for this
device. The theoretical bandwidth of this 32-bit memory interface is 8.0 Gbps for
continuous bursts. The read latency for any address is two clocks, in which at
250 MHz, the latency is 10 ns and at 50 MHz, the latency is 40 ns. The write latency is
one clock.

U65.G2

Flash output enable

FLASH_OEn

2.5-V CMOS

U72.E9

U65.A5

Flash write enable

FLASH_WEn

U72.A8

U65.B4

Flash write protect

FLASH_WPn

U65.A4

Flash ready

FLASH_RDYBSYn

U72.B9

U65.F7

Flash byte enable

FLASH_BYTEn

U72.A9

Table 2–24. Flash Memory Pin-Out (Part 3 of 3)

Board

Reference

Description

Schematic

Signal Name

I/O Standard

Stratix IV GT

Device

Pin Name

Other Connections

Table 2–25. Flash Memory Map

Name

Size (MB)

Address

Reserved

128

0x07FF.FFFF

0x07FE.0000

USER

40

0x07FD.FFFF

0x052C.0000

FACTORY

10

0x052B.FFFF

0x0486.0000

Table 2–26. Flash Memory Component References And The Manufacturing Information

Board Reference

Description

Manufacturer

Manufacturing

Part Number

Manufacturer

Website

U65

1-Gb NOR-type flash

Numonyx

PC28F00AM29EWL

www.numonyx.com

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