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參數(shù)資料
| 型號： | SYM53C141 |
| 廠商： | LSI CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | SCSI Bus Expander(SCSI總線擴展器) |
| 中文描述： | SPECIALTY MICROPROCESSOR CIRCUIT, PQFP128 |
| 封裝： | PLASTIC, QFP-128 |
| 文件頁數(shù)： | 14/68頁 |
| 文件大?。?/td> | 630K |
| 代理商： | SYM53C141 |
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1-4
Introduction
1.2 Benefits of LVD Link
The SYM53C141 supports LVD for SCSI, a signaling technology that
increases the reliability of SCSI data transfers over longer distances than
supported by SE SCSI. The low current output of LVD allows the I/O
transceivers to be integrated directly onto the chip. LVD provides the
reliability of high voltage differential SCSI without the added cost of
external differential transceivers. LVD allows a longer SCSI cable and
more devices on the bus, with the same cables defined in the SCSI-3
Parallel Interface standard for Ultra SCSI. LVD provides a long-term
migration path to even faster SCSI transfer rates without compromising
signal integrity, cable length, or connectivity.
For backward compatibility to existing single-ended devices, the
SYM53C141 features universal LVD Link transceivers that can switch
between LVD SCSI and single-ended modes.
1.2.1 LVD Link Benefits
Integrated LVD Link universal transceivers provide these benefits:
Supports LVD
Allows greater device connectivity and longer cable length
Saves cost of external differential transceivers by using LVD Link
transceivers
Supports a long-term performance migration path
1.3 Application Examples
The following examples represent typical applications for the
SYM53C141 SCSI Bus Expander. Many other configurations are
possible and are only limited by the imagination of the system architect.
1.3.1 LVD to SE Example
Figure 1.2 illustrates how to use the SYM53C141 to attach SE devices
to an LVD bus. This application permits system architects to take
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