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參數(shù)資料
| 型號(hào)： | CYM74S431 |
| 廠商： | Cypress Semiconductor Corp. |
| 英文描述： | 82340FX PCIset Level II Cache Module Family(82340FX PCI電平II高速緩沖存儲(chǔ)器?？煜盗? |
| 中文描述： | 82340FX PCIset二級(jí)緩存模塊系列（82340FX的PCI電平二高速緩沖存儲(chǔ)器模快系列） |
| 文件頁(yè)數(shù)： | 1/8頁(yè) |
| 文件大?。?/td> | 215K |
| 代理商： | CYM74S431 |
PRELIMINARY
Intel 82340FX PCIset Level II
Cache Module Family
CYM74B430 is an asynchronous 256-Kbyte cache module that
provides a low-cost, high-performance solution with industry stan-
dard 32Kx8 5V SRAMs and 3.3V level translators. The
CYM74B430 is organized as 32K by 64-bits with an 8Kx8 tag that
supports 3-2-2-2 read and 4-2-2-2 write cycles at CPU bus speeds
up to 66 MHz.
The synchronous modules are available with low cost synchro-
nous pipelined RAMs, or high performance synchronous burst
RAMs. The synchronous pipelined modules are based on a
16Kx64 RAM. The CYM74P430 is a 256-KB module while the
CYM74P431 is a 512-KB module.
The CYM74S430 and CYM74S431 are high performance syn-
chronous burst cache modules that provide 256 KB and 512 KB of
cache respectively. The modules support 3-1-1-1 performance at
66 MHz. Multiple ground pins and on-board decoupling capac-
itors ensure high performance with maximum noise immunity.
All components on the cache modules are surface mounted on
a multi-layer epoxy laminate (FR-4) substrate. The contact
pins are plated with 150 micro-inches of nickel covered by 10
micro-inches of gold flash.
CYM74B430
CYM74P430/31
CYM74S430/31
Cypress Semiconductor Corporation
3901 North First Street
San Jose
CA 95134
408-943-2600
December 1994 – Revised October 1995
1CYM74S430/31
Features
Pin-compatible secondary cache module family that ad-
heres to the Intel COAST 1.1 specification
Asynchronous (CYM74B430), synchronous pipelined
(CYM74P430, CYM74P431), or synchronous
(CYM74S430, CYM74S431) configurations with pres-
ence and configuration detect pins
Ideal for Intel P54C-based systems with the 82430FX
(Triton) chipset
Operates at 50, 60, and 66 MHz
Uses cost-effective CMOS asynchronous SRAMs or
high-performance synchronous SRAMs
160-position Burndy DIMM CELP2X80SC3Z48 connec-
tor
3.3V compatible inputs/data outputs
Functional Description
This family of secondary cache modules is designed for Intel
P54C systems with the 82430FX (Triton) chipset.
LogicBlockDiagram- CYM74B430
Intel is a registered trademark of Intel Corporation.
LA[17:5]
CWE
0
CWE
1
CWE
2
CWE
3
A
A
A
CE
OE
D
D
D
D
CE
OE
CE
OE
CE
OE
CWE
4
CWE
5
CWE
6
CWE
7
A
CE
OE
A
CE
OE
A
A
CE
OE
D
D
D
D
CE
OE
COE
CWE[7:4]
D[7:0]
D[15:8]
D[23:16]
D[31:24]
D[39:32]
D[47:40]
D[55:48]
D[63:56]
32Kx 8
32Kx 8
A[17:5]
ADDRESSLATCH
CALE
A
FCT373C
CAA[4:3]
CAB[4:3]
CWE[3:0]
TWE
8Kx8
TIO[7:0]
CE
OE
WE
A
D
CS
PD
4
GND
PD
3
NC
PD
2
GND
PD
1
GND
PD
0
NC
5 V
GND
LE
74B430–1
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| CYNA25-1000PT | 25Amp - 400/600/800/1000V - SCR |
| CYNA25-400 | 25Amp - 400/600/800/1000V - SCR |
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