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