Transmission Data Format; Transmission Data Format From Host To Slave; Form1: Command; Form2: Status Request - Marantz SR5400 Specification

SW-A0441-HSI-002

3-2. Transmission data format

3-2-1. Transmission data format from Host to Slave

There are two kinds of transmission data form from Host shown below.

3-2-1-1. Form1: Command

Command is a data that requests some status change.
Start character
ID
COMMAND
End character
S tart
'@ '

3-2-1-2. Form2: Status request

Status request is a data that requests a answer of some status.
Start character
ID
Request character : '?'
Request status
End character
S ta rt
'@ '

3-2-2. Transmission data format from Slave to Host

There are two kinds of transmission data form from Slave shown below.

3-2-2-1. Form1: ACK/NAK

ACK is a reply data from Slave when Slave got an acceptable command data from Host.
ACK
A C K
0 6 h
NAK is a reply data from Slave when Slave got an incorrect Command data, Status request data or
some other data from Host.
NAK
N A K
1 5 h

3-2-2-2. Form2: Status answer

Status answers are reply data when Slave got an acceptable Request status data from Host.
Start character
ID
Answer character
End character
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Hardware Software Interface (HSI)
: '@'
: '0' ~ '9' (A Slave has own ID, A Host has to set the ID.)
: see "Command list"
: 0Dh
C O M M A N D
ID
: '@'
: '0' ~ '9' (A Slave has own ID, A Host has to set the ID.)
: see "Status request list"
: 0Dh
R e q u e s t s ta tu s
ID
'?'
: 06h
: 15h
: '@'
: '0' ~ '9' (A Slave will set own ID.)
: see "Status answer list"
: 0Dh
Marantz America, Inc. 2007
All specifications might be subject to change without notice.
Document Version [1.00b]
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