Documents; Change List; Definitions; Abbreviations - Lexicon MC-4 V1.00 - SERIAL PROTOCOL DEFINITIONS REV 1-6 Manual

Lexicon

1 Documents

The following document should also be used with this document to understand how this protocol can be
used with an MC-4.
070-16329 MC-4 User Guide

1.1 Change List

No changes at this time.

2 Definitions

User Parameter:
HOST:
MC-4:
Nonvolatile RAM:

3 Abbreviations

SOP Start of Packet
EOP End of Packet
ACK Acknowledge
NAK No Acknowledge
FPD Front Panel Display

4 General Description

The intention of the MC-4 serial port and protocol communication is for an external connected HOST to
control and obtain status from the MC-4. The protocol has been designed to focus on two specific goals.
The first is HOST uploading and downloading of MC-4 configuration, and system/effect setups. The
second is HOST control of basic user adjustable parameters.(i.e. input, volume, balance...)
HOST
The MC-4 uses simple notification, command, response and acknowledgment packets to have
communication transactions with a given HOST. This protocol is designed for point-to-point
communication between a HOST and MC-4. The MC-4 Protocol is a 3 layered system. The MC-4 serial
protocol allows for the MC-4, or the HOST, to initiate a communication transaction. Most transactions are
initiated by the HOST. MC-4 then responds to the HOST command with either a response or
acknowledgment packet. There are a few asynchronous notifications that MC-4 initiates indicating
A user changeable variable that stores a specific value that describes an
operating condition for the MC-4 system.
The device initiating or receiving the serial communication packets to/from the
MC-4.
The Lexicon product receiving or transmitting the serial communication packets
to/from the HOST.
The area of memory in a MC-4 that stores users adjustable parameters. The
Nonvolatile RAM is battery backed, to maintain values during MC-4 power down.
Rs-232 Serial
MC-4 Serial Communications Protocol
Lexicon MC-4
CD VOL
5