Mikohn Interface - Aristocrat USA MAV500/MKVI Service Manual

USA MAV500/MKVI Service Manual
0x3012220
I/O DRIVER
0x3012100
0x3012140
0x3012180
0x3012300
base address
0x3012340
base address

11.2.2 Mikohn Interface

The I/O Driver Board provides the interface used with Mikohn Progressive Super
Controllers (CON2). This interface is electrically isolated from the remainder of the
board and requires an isolated 5 V DC supply, which is provided by the extended I/O
Driver Board.
The MAV power supply provides 12 V DC isolated to the I/O Driver Board. The
isolated 5 V DC supply required by the Mikohn interface is generated from this 12 V
supply using a 12 V to 5 V step-down DC/DC regulator on the Extended I/O Driver
Board.
The Mikohn signals must also be physically separated from other signals.
The Mikohn interface provides two Mikohn pulse outputs for two separate Mikohn
Super Controller (CON2) systems as well as a bi-directional RS422 interface to allow
for:
1. Information to be returned to the machine on current jackpot values - to be used
in conjunction with the pulse system,
2. A true bi-directional serial interface to a controller as soon as the supporting
software is available.
Mikohn uses channel A of the DUART (serial COM Port 4). The serial port supports
transmit and receive lines only. No hardware handshaking is used.
Each pulse output provides at least 20 mA of current to the Mikohn circuitry.
28-00486-00
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.
D4..D7
RD/WR COMM Ports 4 & 5
CHANNEL A
CHANNEL B
PARALLEL
COMM Ports 6 & 7
CHANNEL A
CHANNEL B
I/O Driver Board
IRQ_CS DUART Channel 4..7
MIKOHN
EXP SER Rx Tx RTS CTS
EXP I/O 6x TTL I/O
VLC Rx Tx RTS CTS
DTR, DCD
Rx Tx RTS CTS
DTR, DCD
11-9