- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄378513 > CY7C964A-UM (CYPRESS SEMICONDUCTOR CORP) Bus Interface Logic Circuit PDF資料下載
參數(shù)資料
| 型號： | CY7C964A-UM |
| 廠商： | CYPRESS SEMICONDUCTOR CORP |
| 元件分類： | 總線控制器 |
| 英文描述： | Bus Interface Logic Circuit |
| 中文描述： | VME BUS CONTROLLER, CQFP64 |
| 封裝： | CAVITY UP, CERAMIC, QFP-64 |
| 文件頁數(shù)： | 1/6頁 |
| 文件大小： | 158K |
| 代理商： | CY7C964A-UM |
PRELIMINARY
Bus Interface Logic Circuit
CY7C964A
Cypress Semiconductor Corporation
Document #: 38-09001 Rev. *A
3901 North First Street
San Jose
CA 95134
408-943-2600
Revised June 12, 2001
Features
Comparators, counters, latches, and drivers minimize
logic requirements for a variety of multiplexed and
non-multiplexed buses
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
See the
VMEbus Interface Handbook
for more informa-
tion
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
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.
Pin Configuration
PQFP/CQFP/TQFP
Top View
L
C964A-1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
GND
LD7
LDS
FC1
GND
LADO
LADI
LEDI
LEDO
A7
GND
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
GND
LD0
LA0
DENIN*
LAEN
LCIN*
VCIN*
VCC
BLT*
D64
DENO*
ABEN*
D0
A0
GND
1
V
6
V
1
A
6
L
1
D
6
L
2
A
6
2
D
6
L
2
A
5
L
2
5
L
2
D
5
L
2
G
5
G
2
A
5
L
2
D
5
L
2
A
5
L
2
D
5
L
3
A
5
L
3
D
5
L
3
4
V
DENIN1*
STROBE*
MWB*
LCOUT*
VCOUT*
V
VCOMP*
D
相關PDF資料 |
PDF描述 |
|---|---|
| CY7C964A-UMB | Bus Interface Logic Circuit |
| CY7C964A-ASC | Bus Interface Logic Circuit |
| CY7C964A-NC | Bus Interface Logic Circuit |
| CY7C9689-AC | TAXI Compatible HOTLink Transceiver |
| CY7C9689-AI | TAXI Compatible HOTLink Transceiver |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| CY7C964-NC | 制造商:Cypress Semiconductor 功能描述: |
| CY7C9689A-AC | 制造商:Rochester Electronics LLC 功能描述: 制造商:Cypress Semiconductor 功能描述:PHY 1-CH 100-Pin TQFP Tray |
| CY7C9689A-AI | 制造商:Cypress Semiconductor 功能描述: |
| CY7C9689A-AXC | 功能描述:電信線路管理 IC TAXI Compat HOTLink COM RoHS:否 制造商:STMicroelectronics 產(chǎn)品:PHY 接口類型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray |
| CY7C9689A-AXCKJ | 制造商:Cypress Semiconductor 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復。