Main Board
USA MAV500/MKVI Service Manual
10.4.16
Mikohn Link Progressive Interface
The Main Board provides an optically coupled, open-collector pulse interface to a
Mikohn Link Progressive system, useable in some jurisdictions.
The output is the standard Mikohn interface:
•
Switches 20 mA at 24 V.
•
Optically isolated.
•
Reverse protection diode.
10.4.17
In-Circuit Emulator (Not fitted)
To meet the requirements of jurisdictional authorities and to assist programmers in
debugging tasks, an In-Circuit Emulator (ICE) facility is provided to enable the
visibility and control of the SH
−
4 processor resources, such as registers and memory
contents. The ICE functions are established when the JTAG connector, a 14-way
DIL header, is fitted to J8.
The connector is compatible with the Hitachi User Debug Interface (Hitachi
−
UDI)
and provides an interface that conforms to JTAG, IEEE 1149.1 and the IEEE
Standard Test Access Port and Boundary-Scan Architecture. The SH
−
4 (Model
SH7750) Hitachi
−
UDI does not support boundary-scan but does enable emulator
connection. The Hitachi
−
UDI uses six pins to provide the serial transfer protocol
conforming to the JTAG specification
−
TCK,
TMS,
TD,
TDO,
TRST,
ASEBRK/BRKACK.
10.4.18
FPGA JTAG Interface (Not fitted)
The FPGA JTAG connector is used for Main Board development.
10.4.19 Mechanical
Switches
The board senses the status of five mechanical switches (signals MSWITCH0 to
MSWITCH4) in addition to the eight mechanical security switches. MSWITCH0 is
the Audit reset switch, MSWITCH1 is the Jackpot reset switch, and MSWITCH2,
MSWITCH3, and MSWITCH4 are spare. The spare switches may be used for an
optional handle. The specifications for the inputs are:
•
The switch current is 5 mA from the 5 V logic supply.
•
The circuit is filtered for EMC (0.1
µ
F ceramic is recommended). Input filtering
provides EMC protection.
•
The signals are connected to the internal SPI channel via a low-pass filter and
sensed with HCMOS logic levels.
10-22
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
