Datasheet > CY7C964-ASCT

CY7C964-ASCT

更新时间： 2024-11-11 20:03:43

品牌	Logo	应用领域
赛普拉斯 - CYPRESS		外围集成电路
页数	文件大小	规格书
6页	99K
描述
VME Bus Controller, CMOS, PQFP64, TQFP-64

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技术参数
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CY7C964-ASCT 技术参数

生命周期：	Obsolete	零件包装代码：	QFP
包装说明：	LFQFP,	针数：	64
Reach Compliance Code：	unknown	风险等级：	5.84
地址总线宽度：	8	外部数据总线宽度：	8
JESD-30 代码：	S-PQFP-G64	长度：	10 mm
端子数量：	64	封装主体材料：	PLASTIC/EPOXY
封装代码：	LFQFP	封装形状：	SQUARE
封装形式：	FLATPACK, LOW PROFILE, FINE PITCH	认证状态：	Not Qualified
座面最大高度：	1.6 mm	表面贴装：	YES
技术：	CMOS	端子形式：	GULL WING
端子节距：	0.5 mm	端子位置：	QUAD
宽度：	10 mm	uPs/uCs/外围集成电路类型：	BUS CONTROLLER, VME
Base Number Matches：	1

CY7C964-ASCT 数据手册

fax id: 5604

CY7C964

Bus Interface Logic Circuit

ler. In every case, the controllers provide the control and timing

signals to the Bus Interface Logic Circuit as it acts as a bridge

between the VMEbus and the Local bus.

Features

• Comparators, counters, latches, and drivers minimize

logic requirements for a variety of multiplexed and

non-multiplexed buses

Application with VMEbus Architecture

• Directly drives VMEbus address and data signals

• 8-bit comparator for slave address decoding

• Flexible interface optimized for VMEbus applications

• Companion device to Cypress VMEbus family of com-

ponents

• Replaces multiple SSI/MSI components

• Cascadable

• 64-pin QFP and 68-pin PGA packages

Use with Cypress VMEbus Controllers

The CY7C964 Bus Interface Logic Circuit is a seamless inter-

face between the VIC068A/VIC64 and the VMEbus signals.

The device functions equally well in the established 32-bit

VMEbus arena and the new 64-bit VMEbus standard. The de-

vice contains three 8-bit counters to fulfill the functions of Block

counters, and DMA counters as implied by the D64 portion of

the VMEbus specification. It also contains the necessary mul-

tiplexing logic to allow the 64-bit-wide VMEbus path to be fun-

nelled to and from the 32-bit local bus. Control circuitry is in-

cluded to manage the switching of the 32-bit address bus

during normal (32-bit) operations, and during MBLT (64-bit)

operations. The on-chip drivers are capable of driving the

VMEbus directly (48 mA).

• See the VMEbus Interface Handbook for more informa-

tion

Functional Description

The CY7C964 integrates several space-consuming functions

into one small package, freeing board space for the implemen-

tation of added-value board features. It contains counters,

comparators, latches, and drivers configured to be of value to

implementors of any backplane interface with address and

data buses, particularly VMEbus interfaces. The on-chip driv-

ers are suitable for driving the VMEbus directly. The CY7C964

is ideal in applications where high-performance and real es-

tate are primary concerns.

Use in Other VMEbus Controller Implementations

The CY7C964 circuitry is designed to be of use to designers

of VMEbus circuitry, including VSB (VME subsystem bus) and

designs not requiring the features of the Cypress VIC068A,

VIC64, CY7C960, and CY7C961. The logic diagram includes

general-purpose blocks of comparators, counters, and latches

that can be controlled using the flexible control interface to

allow many different options to be implemented. Although the

device is packaged in a small 64-pin package, the use of mul-

tiplexed input and output pins provides access to the many

internal functions, thus saving external circuitry.

Although having many applications, the Bus Interface Logic

Circuit is an ideal companion part to Cypress’s VMEbus family

of components, the VIC068A, VIC64, the CY7C960, and

CY7C961. It is intended to drive the address and data buses,

so three or four of these small devices are needed per control-

Pin Configuration

PQFP/CQFP/TQFP

Top View

GND

LD0

LA0

GND

LD7

LDS

DENIN*

DENIN1*

LAEN

FC1

STROBE*

MWB*

LCOUT*

GND

VCOMP*

VCOUT*

LADO

LADI

LEDI

LEDO

LCIN*

VCIN*

VCC

BLT*

D64

DENO*

ABEN*

GND

C964-1

Cypress Semiconductor Corporation

•

3901 North First Street

•

San Jose

•

CA 95134

•

408-943-2600

November 1992 – Revised December 4, 1997

12 3 4 5 6

中文翻译

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与CY7C964-ASCT相关器件

型号	品牌	获取价格	描述	数据表
CY7C964A-UM	CYPRESS	获取价格	Bus Interface Logic Circuit
CY7C964A-UMB	CYPRESS	获取价格	Bus Interface Logic Circuit
CY7C964-GM	CYPRESS	获取价格	Bus Interface Logic Circuit
CY7C964-GMB	CYPRESS	获取价格	Bus Interface Logic Circuit
CY7C964-NC	CYPRESS	获取价格	Bus Interface Logic Circuit
CY7C964-UC	ETC	获取价格	VME/VMS/VXI/VSB Bus Interface/Controller
CY7C964-UM	CYPRESS	获取价格	Bus Interface Logic Circuit
CY7C964-UMB	CYPRESS	获取价格	Bus Interface Logic Circuit
CY7C9689	CYPRESS	获取价格	TAXI Compatible HOTLink Transceiver
CY7C9689A	CYPRESS	获取价格	TAXI-compatible HOTLink Transceiver

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