Application Layer; Rv8 Asynchronous Notification Packets; Wakeup Notification; Sleep Notification - Lexicon RV8 V1.0 - SERIAL COMMUNICATIONS PROTOCOL DEFINITION REV 1-7 Manual

Lexicon, Inc.
RV-8 Serial Communications Protocol
In addition, each byte of a packet must be received sequentially and within the INTER_PACKET_TIME. If
any of the bytes within a packet transmission exceeds the INTER_PACKET_TIME, the RV8 will respond
by transmitting a NAK packet with an error code DC_ERR_INVALID_PACKET. The RV8 then continues
to look for a SOP byte and will not process the erroneous application packet. The HOST can use this as an
indicator to retransmit the corrupted packet.

7 Application Layer

7.1 RV8 Asynchronous Notification Packets

RV8 has been designed to transmit the asynchronous notification packets following these system changes:
1. Power On
2. Entering Standby
3. Front Panel Display update
4. Parameter Value Changes.
The notification packets are defined as follows:

7.1.1 Wakeup Notification

By transmitting the Wakeup Notification, RV8 indicates the unit has just "powered on" or reset and is ready
to receive host commands. This notification is primarily for the HOST to know the status of the RV8.
7.1.1.1 Notification Packet Description
7.1.1.2 Host Response
The RV8 does not expect any response from the HOST.

7.1.2 Sleep Notification

By transmitting the Sleep Notification, RV8 indicates the unit is shutting down into a standby mode.
Because the hard power switch could be activated independently of the RV8 system software, hard power
down will not be notified. Acknowledgment of the Sleep Notification is not required. This notification is
primarily for the HOST to know the operating status of the RV8.
7.1.2.1 Notification Packet Description
© 2004 Lexicon, Inc. All rights reserved.
Application Header:
Command DC_WAKEUP
Data Count 0
Application Data:
N/A
Application Header:
Command DC_SLEEP
Data Count 0
Application Data:
N/A
Printed on: 01/18/05
0x01
0x00
0x02
0x00
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