- 您现在的位置：买卖IC网 > PDF目录67711 > IDT49C465PQF8 (INTEGRATED DEVICE TECHNOLOGY INC) 49C SERIES, 32-BIT ERROR DETECT AND CORRECT CKT, PQFP144 PDF资料下载
参数资料
| 型号： | IDT49C465PQF8 |
| 厂商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分类： | 算术逻辑单元 |
| 英文描述： | 49C SERIES, 32-BIT ERROR DETECT AND CORRECT CKT, PQFP144 |
| 封装： | PLASTIC, QFP-144 |
| 文件页数： | 4/39页 |
| 文件大小： | 299K |
| 代理商： | IDT49C465PQF8 |
第1页第2页第3页当前第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页
12
COMMERCIAL TEMPERATURE RANGE
IDT49C465/A
32-BIT FLOW-THRU ERROR DETECTION AND CORRECTION UNIT
PARTIAL-WORD-WRITE OPERATIONS
FOR COMMON I/O MEMORIES
CHE CKBIT
MEM O R Y
MAIN
MEM O RY
BYT E 1
CHE CKBIT
GENER ATOR
BYT E 3
BYT E 2
SD BU S
B3 = 1
B2 = 1
B1 = 1
B0 = 0
MD BU S
CBO
CBI
ID T4 9C 465
BYT E 3
BYT E 2
BYT E 1
BYT E 0
B3
B2
B1
B0
CO RR EC TIO N
BLO C K
PI
PE
L
A
T
C
H
MD
L
A
T
C
H
A 3
A 0
A 1
BYT E 0
SD
LAT
C
H
8
A 2
BYTE
MUX
In order to perform a partial-word-write operation, the complete word
in question must be read from memory. This must be done in order to
correct any error which may have occurred in the old word. Once the
complete, corrected word is available, with all bytes verified, the new
word may be assembled in the byte mux and the new checkbits
generated.
The example shown above illustrates the case of combining three
bytes from an old word with a new lower order byte to form a new word.
The new word, along with the new checkbits, may now be written to
memory.
In the separate I/O memory configuration, the situation is similar
except that the new word is output on the SD Bus instead of the MD Bus
(refer to previous page.)
相关PDF资料 |
PDF描述 |
|---|---|
| IDT49FCT818AEB | 8-BIT, DSP-PIPELINE REGISTER, CDFP24 |
| IDT49FCT818P | 8-BIT, DSP-PIPELINE REGISTER, PDIP24 |
| IDT49FCT818L | 8-BIT, DSP-PIPELINE REGISTER, CQCC28 |
| IDT49FCT818LB | 8-BIT, DSP-PIPELINE REGISTER, CQCC28 |
| IDT49FCT818PB | 8-BIT, DSP-PIPELINE REGISTER, PDIP24 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| IDT49C465PQFB | 制造商:IDT 制造商全称:Integrated Device Technology 功能描述:32-BIT FLOW-THRU ERROR DETECTION AND CORRECTION UNIT |
| IDT49C466 | 制造商:IDT 制造商全称:Integrated Device Technology 功能描述:64-BIT FLOW-THRU ERROR DETECTION AND CORRECTION UNIT |
| IDT49C466A | 制造商:IDT 制造商全称:Integrated Device Technology 功能描述:64-BIT FLOW-THRU ERROR DETECTION AND CORRECTION UNIT |
| IDT49C466APQF | 制造商:IDT 制造商全称:Integrated Device Technology 功能描述:64-BIT FLOW-THRU ERROR DETECTION AND CORRECTION UNIT |
| IDT49C466GB | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Error Detection & Correction (EDAC) |
发布紧急采购，3分钟左右您将得到回复。