Aristocrat USA MAV500/MKVI Service Manual page 268

I/O Driver Board
Figure 11-4 Extended US I/O Driver Board Block Diagram
The Extended I/O Driver Board facilitates the 'writing' of data to various outputs
such as mechanical meters or the light tower lamps, and it 'reads' data from inputs
such as the pushbutton switches or audit key switch. Table 11-1 lists those I/Os
which are included on either the Extended I/O Driver Board or the Depopulated MkV
Main Board.
In addition to the signals listed in Table 11-1, there are other input signals required by
the I/O Driver Board. These are mainly control signals, and include the following:
CLK8, NDACK, READ, WRITE, BATTERY, and various Power lines as well as
address lines and the data bus. These signals are generated on the MkV Main Board
and connect to the Extended I/O Driver Board via the Backplane.
11-6
This document contains confidential information which is proprietary to ATI. It may not be disclosed to any unauthorized parties,
and it may not be copied. All rights reserved. © Copyright (ATI) Aristocrat Technologies, Inc. 2002.
USA MAV500/MKVI Service Manual
28-00486-00