Avago Technologies LSI53C1000R - Manual (Page 96)

3-2 Signal Descriptions
Version 2.2 Copyright © 2000–2003 by LSI Logic Corporation. All rights reserved.
The PCI Interface contains several functional groups of signals. The
SCSI Bus Interface contains one functional group of signals, as
illustrated in
Figure 3.1 .
There are five signal type definitions:
Figure 3.1 illustrates the signal groupings. Pinout information and
package drawings are available in Section 6.6, “Package Drawings.”
I Input, a standard input-only signal.
O Output, a standard output driver (typically a Totem Pole output).
I/O Input and output (bidirectional).
T/S 3-state, a bidirectional, 3-state input/output signal.
S/T/S Sustained 3-state, an active LOW 3-state signal owned and driven by
one and only one agent at a time.