Datasheet > 存储 > SRAM> CY7C09449PV-AC

CY7C09449PV-AC

更新时间： 2024-09-16 22:15:39

品牌	Logo	应用领域
赛普拉斯 - CYPRESS		总线控制器静态存储器 PC
页数	文件大小	规格书
50页	906K
描述
128 Kb Dual-Port SRAM with PCI Bus Controller (PCI-DP)

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CY7C09449PV-AC 数据手册

09449PV

CY7C09449PV-AC

128 Kb Dual-Port SRAM with PCI Bus

Controller (PCI-DP)

A primary resource within the CY7C09449PV is its 128 Kb of

dual-port memory. This memory is interfaced to both the PCI

bus and to a local microprocessor bus. This shared memory

Features

• 128 Kb of dual-ported shared memory

can be accessed as a target from both buses at the same time

for inter-process communication. From either the local or PCI

bus the CY7C09449PV can be directed to become a PCI bus

master to move data into or out of the internal shared memory

as a direct memory access (DMA). The CY7C09449PV can

DMA across the PCI bus any number of 32-bit double words

(DWORD), up to 16K bytes. It uses the full bursting capabilities

of the PCI bus for maximum efficiency and can transfer data

over the full 32-bit PCI address space.

• Master and Target PCI Specification 2.2 compliant in-

terface

• Embedded host bridge capability

• Direct interface to many microprocessors

• I₂O message transport unit; includes four 32-bit, 32-

entry FIFO

• Local bus clock rates up to 50 MHz

• Single 3.3V Power Supply including compatibility with

3V and 5V PCI Bus signaling

The CY7C09449PV implements optional requirements of the

PCI specification by selecting the optimum PCI command for

each transaction it masters to the PCI bus. This maximizes

overall efficiency of the system platform. PCI bridging func-

tions (PCI-to-PCI and Host-to-PCI bridges) use the commands

to enhance prefetch and cache coherency operations. The

CY7C09449PV requests and gains access to the PCI bus as

any master. It does not, within itself, include a PCI bus arbitra-

tion function. Standard PC PCI buses include this function;

embedded systems may need to implement this function.

• 160-pin thin plastic quad flat package

Introduction

The CY7C09449PV is one of the PCI interface controllers in

the Cypress Semiconductor PCI-DP™ family. The

CY7C09449PV provides a PCI master/target interface with di-

rect connections to many popular microprocessors. It provides

128 Kb of dual-port SRAM that is used as shared memory

between the local microprocessor and the PCI bus. An I₂O

message unit, complete with message queues and interrupt

capability, is also provided. The CY7C09449PV allows the de-

signer to interface an application to the PCI bus in a straight-

forward, inexpensive way.

The CY7C09449PV provides a direct access mechanism from

the local bus to the PCI bus. With it, the local processor can

direct the CY7C09449PV to run a PCI bus master cycle of any

kind to any address. This means that the CY7C09449PV can

run PCI configuration cycles allowing it to be used as a host

bridge.

Functional Overview

The CY7C09449PV is composed of a number of shared re-

sources that allow effective data movement between the local

bus and the PCI bus.

Table of Contents

Features

Introduction

Functional Overview

Pin Configuration

Pin Description

PCI Bus

Local Bus

Timing Diagrams

I²C Serial Port and Auto-Configuration

Operations Registers

Performance Characteristics

CY7C09449PV Operations

Ordering Information

Package Diagram

Cypress Semiconductor Corporation

•

3901 North First Street

•

San Jose

•

CA 95134

•

408-943-2600

Document #: 38-06061 Rev. *A

Revised December 27, 2002

12 3 4 5 6 7...50

中文翻译

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CY7C09449PV-AC 替代型号

型号	品牌	替代类型	描述	数据表
CY7C09449PVA-AC	CYPRESS	功能相似	128 Kb Dual-Port SRAM with PCI Bus Controller

与CY7C09449PV-AC相关器件

型号	品牌	获取价格	描述	数据表
CY7C09569V	CYPRESS	获取价格	3.3V 16K/32K x 36 FLE x 36-TM Synchronous Dual-Port Static RAM
CY7C09569V_12	CYPRESS	获取价格	3.3 V 16 K / 32 K Ã 36 FLEx36Â® Synchronous
CY7C09569V-100AC	CYPRESS	获取价格	3.3V 16K/32K x 36 FLE x 36-TM Synchronous Dual-Port Static RAM
CY7C09569V-100AXC	CYPRESS	获取价格	3.3 V 16 K / 32 K Ã 36 FLEx36Â® Synchronous
CY7C09569V-100BBC	CYPRESS	获取价格	3.3V 16K/32K x 36 FLE x 36-TM Synchronous Dual-Port Static RAM
CY7C09569V-133BAC	CYPRESS	获取价格	Dual-Port SRAM, 16KX36, 4.1ns, CMOS, PBGA172, 15 X 15 MM, 0.51 MM HEIGHT, 1 MM PITCH, BGA-
CY7C09569V-67AC	CYPRESS	获取价格	3.3V 16K/32K x 36 FLE x 36-TM Synchronous Dual-Port Static RAM
CY7C09569V-67AI	CYPRESS	获取价格	Dual-Port SRAM, 64KX9, 8ns, CMOS, PQFP144, 20 X 20 MM, 1.40 MM HEIGHT, PLASTIC, TQFP-144
CY7C09569V-67BAC	CYPRESS	获取价格	Dual-Port SRAM, 16KX36, 8ns, CMOS, PBGA172, 15 X 15 MM, 0.51 MM HEIGHT, 1 MM PITCH, BGA-17
CY7C09569V-67BBC	CYPRESS	获取价格	3.3V 16K/32K x 36 FLE x 36-TM Synchronous Dual-Port Static RAM

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