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Lexicon, Inc.
RV-8 Serial Communications Protocol
1 Documents
The following documents should also be used with this document to understand how this protocol can be
used with an RV-8.
070-15838 User Guide, RV-8
2 Definitions
User Parameter:
HOST:
RV-8:
Nonvolatile FLASH:
2.1 Protocol Version Cross-reference
All references to RV-8 shall be valid unless specifically documented otherwise.
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 RV-8 serial port and protocol communication is for an external connected HOST to
control and obtain status from the RV-8. The protocol has been designed to focus on two specific goals.
The first is HOST uploading and downloading of RV-8 configuration, and system/effect setups. The
second is HOST control of basic user adjustable parameters.(i.e. input, volume, balance...)
HOST
The RV-8 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 RV-8. The RV-8 Protocol is a 3 layered system. The RV-8 serial
protocol allows for the RV-8, or the HOST, to initiate a communication transaction. Most transactions are
initiated by the HOST. RV-8 then responds to the HOST command with either a response or
acknowledgment packet. There are a few asynchronous notifications that RV-8 initiates indicating system
changes. Each transaction initiated must wait for a corresponding response before initiating the next
transmission.
© 2005 Lexicon, Inc. All rights reserved.
A user changeable variable that stores a specific value that describes an
operating condition for the RV-8 system.
The device initiating or receiving the serial communication packets to/from the
RV-8.
The Lexicon product receiving or transmitting the serial communication packets
to/from the HOST.
The area of memory in an RV-8 that stores users adjustable parameters.
Rs-232 Serial Link
Printed on: 07/26/05
Lexicon RV-8
CD VOL
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