Bus Composition - Quantum Tape Drive LTO-3 User Manual

2

Bus Composition

Table 3 ADT Bus
Connections
Connection
Name O/M
Reset O
a
Sense M
a
Sense O
aux
Sense M
d
Signal O
aux
Tx - Rx M
a d
Tx - Rx M
d a
Table 3 defines the connections that make up the ADT bus. With the
exception of Sense
a
connections only when an initiator port asserts Sense
asserts Sense .
d
Connection
Type Driven By
Signal automation
port
Sense automation
port
Sense
Sense DTD port
Signal
Tx-Rx automation
port
Tx-Rx DTD port
LTO-3 Tape Drive User's Guide
Installing an Internal LTO-3 Tape Drive
and Sense this standard defines the behavior of these
d
Connection Definition
An automation device may use this
connection to signal a reset request to a data
transfer device. A data transfer device shall
treat the receipt of a signal on this connection
as a port logout
A data transfer device shall use this
connection to sense the presence or absence of
an automation device on the ADT bus.
A vendor unique sense connection. This
standard does not define the use of this
connection.
An automation device shall use this
connection to sense the presence or absence of
a data transfer device on the ADT bus.
A vendor unique signal connection. This
standarddoes not define the use of this
connection.
An automation device shall use this
connection to send serialized data. A data
transfer device shall receive serialized data on
this connection.
A data transfer device shall use this
connection to send serialized data. An
automation device shall receive serialized
data on this connection.
Chapter 2 Installation
and the target port
a
17