Altera Stratix IV GX FPGA Development Board Manuel d'utilisateur télécharger pdf (Page 66)

2–58 Chapter 2: Board Components

Memory

Stratix IV GX FPGA Development Board, 530 Edition Reference Manual November 2010 Altera Corporation

Table 2–53 lists the QDRII+ top port 1 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.

U7.F11 Read data bus

QDR2TOP1_Q5

1.5-V HSTL Class I

G14

U7.J10 Read data bus

QDR2TOP1_Q4

H14

U7.K11 Read data bus

QDR2TOP1_Q3

K12

U7.L11 Read data bus

QDR2TOP1_Q2

J12

U7.M10 Read data bus

QDR2TOP1_Q1

K13

U7.P11 Read data bus

QDR2TOP1_Q0

J13

U7.A11 Read clock P

QDR2TOP1_CQ_P

H13

U7.A1 Read clock N

QDR2TOP1_CQ_N

L13

U7.A8 Read port select QDR2TOP1_RPSn F19

U7.P6 Read data valid

QDR2TOP1_QVLD

D13

U7.H1 DLL enable

QDR2TOP1_DOFFn

D20

Table 2–52. QDRII+ Top Port 1 Pin Assignments, Schematic Signal Names, and Functions (Part 3 of 3)

Board Reference Description

Schematic Signal Name

I/O Standard

Stratix IV GX

Device

Pin Number

Table 2–53. QDRII+ Top Port 1 Component Reference and Manufacturing Information

Board

Reference

Description Manufacturer

Manufacturing

Part Number

Manufacturer

Website

U7 QDRII+, 4 M × 18, 400 MHZ

Cypress CY7C2563KV18-400BZXC www.cypress.com

NEC uPD44647186AF5-E22-FQ1 www.nec.com

1 2 ... 61 62 63 64 65 66 67 68 69 70 71 ... 77 78

Commentaires sur ces manuels

Pas de commentaire

Altera Stratix IV GX FPGA Development Board Manuel d'utilisateur Page 66

Commentaires sur ces manuels

Produits connexes et manuels pour Instruments de mesure Altera Stratix IV GX FPGA Development Board