音影先锋亚洲天堂网|电影世界尽头的爱完整版播放|国产 熟女 91|高清无码免费观看欧美日韩|韩国一区二区三区黄色录像|美女亚洲加勒比在线|亚洲综合网 开心五月|7x成人在线入口|成人网站免费日韩毛片区|国产黄片?一级?二级?三级

DP8466B Datasheet

  • DP8466B

  • 58頁(yè)

  • ETC

掃碼查看芯片數(shù)據(jù)手冊(cè)

上傳產(chǎn)品規(guī)格書(shū)

PDF預(yù)覽

DP8466B Disk Data Controller
June 1990
DP8466B Disk Data Controller
General Description
The DP8466B Disk Data Controller (DDC) is an intelligent
peripheral which interfaces Winchester or Floppy disk drives
to microprocessor based systems It transfers data between
a buffer memory or host system and the serial bit data
stream with disk rates up to 25M-bits per second High
speed system data transfer is possible with full on-chip DMA
control of buffer or main memory The 16-bit system I O
interface allows use with any popular 8-bit 16-bit or 32-bit
microprocessor Programmable track format enables recon-
figuration of the DDC for different drive types in a multiple
drive environment Using other National DP846X series disk
data path chips the DP8466B conforms to ST506 SMD
and ESDI standard drive interfaces as well as to intelligent
standard interfaces such as SCSI (SASI) and IPI
The DP8466B is available in three performance versions
DP8466BN-12 DP8466BN-20 and DP8466BN-25
Part
Number
DP8466BN-25
DP8466BN-20
DP8466BN-12
Max Disk
Data Rate
25 Mbit sec
20 Mbit sec
12 Mbit sec
Max DMA
Transfer Rate
10 Mbyte sec
8 Mbyte sec
6 Mbyte sec
Features
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Easily conforms to any standard drive interface
Compatible with floppy hard and optical disk drives
Compatible with 8 16 or 32-bit microprocessor systems
Programmable disk format
Sector lengths up to 64k bytes with up to 255 sectors
per track
Programmable 32 or 48-bit ECC polynomial
Internal ECC correction in less than a sector time
Disk data rate to 25M bits per second
Multiple sector transfer capability
32 byte internal FIFO data buffer with interleavable
burst capability
8 or 16-bit wide data transfers
Single 32-bit or dual 16-bit DMA channel addresses
Up to 10M bytes per second DMA transfer rate
a
5V supply 48 pin DIP microCMOS process
TL F 5282 鈥?1
FIGURE 1 Typical System Configuration
Table of Contents
1 0 INTRODUCTION
2 0 PIN DESCRIPTION
3 0 INTERNAL REGISTERS OF THE DDC
4 0 DDC OPERATION
5 0 FORMAT READ AND WRITE
6 0 CRC ECC
7 0 DATA TRANSFERS
8 0 INTERRUPTS
9 0 ADDITIONAL FEATURES
TRI-STATE is a registered trademark of National Semiconductor Corp
MULTIBUS
TM
is a trademark of Intel Corp
C
1995 National Semiconductor Corporation
TL F 5282
RRD-B30M115 Printed in U S A
10 0 SYSTEM CONFIGURATIONS
11 0 ABSOLUTE MAXIMUM RATINGS
12 0 DC ELECTRICAL CHARACTERISTICS
13 0 AC ELECTRICAL CHARACTERISTICS AND
TIMING DIAGRAMS
14 0 AC TEST CONDITIONS
15 0 MISCELLANEOUS TIMING INFORMATION
16 0 FUNCTIONAL STATUS
17 0 HELPFUL HINTS
18 0 APPENDIX

DP8466B相關(guān)型號(hào)PDF文件下載

您可能感興趣的PDF文件資料

熱門IC型號(hào)推薦

掃碼下載APP，
一鍵連接廣大的電子世界。

在線人工客服

買家服務(wù)：
賣家服務(wù)：
技術(shù)客服：

0571-85317607

網(wǎng)站技術(shù)支持

13606545031

客服在線時(shí)間周一至周五
9:00-17:30

關(guān)注官方微信號(hào)，
第一時(shí)間獲取資訊。

建議反饋
返回頂部

建議反饋

聯(lián)系人：

聯(lián)系方式：

按住滑塊，拖拽到最右邊
>>
感謝您向阿庫(kù)提出的寶貴意見(jiàn)，您的參與是維庫(kù)提升服務(wù)的動(dòng)力！意見(jiàn)一經(jīng)采納，將有感恩紅包奉上哦！