CY7C964A-NC Cypress Semiconductor Corp, CY7C964A-NC Datasheet

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CY7C964A-NC

Manufacturer Part Number
CY7C964A-NC
Description
Manufacturer
Cypress Semiconductor Corp
Datasheet

Specifications of CY7C964A-NC

Operating Temperature (min)
0C
Operating Temperature Classification
Commercial
Operating Temperature (max)
70C
Package Type
PQFP
Rad Hardened
No
Lead Free Status / Rohs Status
Not Compliant

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Part Number
Manufacturer
Quantity
Price
Part Number:
CY7C964A-NC
Manufacturer:
CYPRESS
Quantity:
266
Part Number:
CY7C964A-NC
Manufacturer:
CYPRESS
Quantity:
46
Cypress Semiconductor Corporation
Document #: 38-09001 Rev. *A
Features
Functional Description
The CY7C964A 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
CY7C964A is ideal in applications where high-performance
and real estate are primary concerns.
Although having many applications, the Bus Interface Logic
Circuit is an ideal companion part to Cypress’s VMEbus family
of components, the VIC068A, VIC64, and the CY7C960A. It is
intended to drive the address and data buses, so three or four
of these small devices are needed per controller. In every
• Comparators, counters, latches, and drivers minimize
• 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-
• Replaces multiple SSI/MSI components
• Cascadable
• 64-pin QFP
• See the VMEbus Interface Handbook for more informa-
logic requirements for a variety of multiplexed and
non-multiplexed buses
ponents
tion
Pin Configuration
STROBE*
VCOMP*
VCOUT*
LCOUT*
MWB*
LADO
LEDO
GND
GND
GND
LADI
LEDI
LDS
FC1
LD7
A7
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
3901 North First Street
PRELIMINARY
PQFP/CQFP/TQFP
Top View
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.
Application with VMEbus Architecture
Use with Cypress VMEbus Controllers
The CY7C964A Bus Interface Logic Circuit is a seamless in-
terface 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).
Use in Other VMEbus Controller Implementations
The CY7C964A 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, and CY7C960A. The logic diagram includes gener-
al-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 offered in a small 64-pin package, the use of multiplexed
input and output pins provides access to the many internal
functions, thus saving external circuitry.
Bus Interface Logic Circuit
San Jose
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
C964A-1
GND
LD0
LA0
DENIN*
DENIN1*
LAEN
LCIN*
VCIN*
VCC
BLT*
D64
DENO*
ABEN*
D0
A0
GND
CA 95134
Revised June 12, 2001
CY7C964A
408-943-2600

Related parts for CY7C964A-NC

CY7C964A-NC Summary of contents

Page 1

... The on-chip drivers are capable of driving the VMEbus directly (48 mA). Use in Other VMEbus Controller Implementations The CY7C964A circuitry is designed use to designers of VMEbus circuitry, including VSB (VME subsystem bus) and designs not requiring the features of the Cypress VIC068A, VIC64, and CY7C960A. The logic diagram includes gener- ...

Page 2

... Application with Other Bus Architectures The CY7C964A is optimized for applications requiring wide buffers and high-performance multiplexing operations. The ar- chitecture can be configured to provide functions such as 16-bit bidirectional three-state latch and 16-bit comparator Ordering Information Package Ordering Code Name CY7C964A–ASC A64 CY7C964A–NC N65 CY7C964A– ...

Page 3

... Package Diagrams Document #: 38-09001 Rev. *A 64-Pin Thin Quad Flatpack A64 CY7C964A Page ...

Page 4

... Package Diagrams (continued) Document #: 38-09001 Rev. *A 64-Lead Plastic Thin Quad Flatpack N65 CY7C964A Page ...

Page 5

... The inclusion of Cypress Semiconductor products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress Semiconductor against all charges. CY7C964A Page ...

Page 6

... Document Title: CY7C964A Bus Interface Logic Circuit Document Number: 38-09001 REV. ECN NO. Issue Date ** 106236 04/20/01 *A 107043 06/12/01 Document #: 38-09001 Rev. *A Orig. of Change SZV Change from Spec number: 38-00197 to 38-09001 KBN Change from CY7C964 to CY7C964A; removed GMB and GM packages CY7C964A Description of Change Page ...

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