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> Symbios logic# SYM53C141, scsi bus expander
Symbios logic# SYM53C141, scsi bus expander
The SYM53C141 SCSI Bus Expander is a single chip solution allowing
the extension of device connectivity and/or cable length limits of the SCSI
bus. A SCSI bus expander couples bus segments together without any
impact to the SCSI protocol, software, or firmware. The SYM53C141
SCSI Bus Expander attaches Single-Ended (SE) SCSI peripherals to the
Low Voltage Differential (LVD) signaling a bus used by Ultra2 SCSI.
The SYM53C141 does not boost the transfer rates of SE devices to
Ultra2 SCSI rates, but instead enables system architects to take
advantage of the inherent cable distance, device connectivity, and data
reliability benefits of LVD with Ultra SCSI peripherals.
The SYM53C141 operates in one of two modes:
For applications requiring SE to High-Voltage Differential (HVD), use the
SYM53C120 Bus Expander. Table 1.1 shows all modes of operation.
In both SCSI Bus Extender and Converter modes, cable segments are
electrically isolated from each other. This feature maintains the signal
integrity of each cable segment. For bus isolation applications, the
SYM53C141 is ideally suited for the SYM53C895 Ultra2 SCSI controller.
LSI Logic Product Extender Converter
SYM5353C141 SE to SE SE to LVD
