DS21T09S Dallas Semiconducotr, DS21T09S Datasheet - Page 2

• Manufacturer Part Number: DS21T09S
• Description: Plug and Play SCSI Terminator
• Manufacturer: Dallas Semiconducotr

DS21T09
PnP SCSI Specification
PnP ISA Specification
PnP BIOS Specification
PnP Option ROM Specification
Available from: Plug and Play forum on
CompuServe (Go plugplay).
FUNCTIONAL DESCRIPTION
The DS21T09 is designed to be a single chip termination subsystem for use in PnP SCSI systems, Figure
1. When embedded on a host bus adapter or motherboard, the DS21T09 can automatically sense the
termination status of the SCSI bus and attach or isolate its resistors as needed to maintain proper bus
termination. External and internal active termination can be provided by the DS21T07.
DS21T09 APPLICATION ENVIRONMENT Figure 1
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