Marantz SR7400 - Marantz Design and Service Information; Ordering Replacement Parts; Critical Service Safety Test

RS232C Control Spec. Page: 2 / 17
SR7400/8400 Document Version [1.00]
Table of Contents
1.
Introduction ............................................................................................................................................................ 3
1-1. Purpose ............................................................................................................................................................ 3
1-2. Scope................................................................................................................................................................ 3
1-3. Abbreviations ...................................................................................................................................................3
1-4. References....................................................................................................................................................... 3
2. Global Description ................................................................................................................................................ 3
2-1. Overview........................................................................................................................................................... 3
2-2. Block Diagram.................................................................................................................................................. 3
2-3. Interface connecter specification of This Product .......................................................................................... 3
2-4. Assumptions and Dependencies.................................................................................................................... 3
3. Detailed Description.............................................................................................................................................. 4
3-1. Connection format ........................................................................................................................................... 4
3-1-1. Physical connection................................................................................................................................. 4
3-1-1-1. Data transmission sequence from Host to Slave .......................................................................... 4
3-1-1-2. Data transmission sequence from Slave to Host .......................................................................... 4
3-2. Transmission data format................................................................................................................................ 5
3-2-1. Transmission data format from Host to Slave........................................................................................ 5
3-2-1-1. Form1: Command ........................................................................................................................... 5
3-2-1-2. Form2: Status request..................................................................................................................... 5
3-2-2. Transmission data format from Slave to Host........................................................................................ 5
3-2-2-1. Form1: ACK/NAK ............................................................................................................................ 5
3-2-2-2. Form2: Status answer ..................................................................................................................... 5
3-3. The transaction sequences and the regulations............................................................................................ 6
3-3-1. The transaction sequences..................................................................................................................... 6
3-3-2. The transaction regulations..................................................................................................................... 6
3-3-3. Example of the transactions.................................................................................................................... 6
3-3-4. Examples of the handshaking flowchart ................................................................................................ 7
3-3-4-1. Example of successful handshaking.............................................................................................. 7
3-3-4-2. Example of error handshaking........................................................................................................ 7
3-4. Command list ................................................................................................................................................... 8
3-4-1. Normal Command list.............................................................................................................................. 8
3-5. Status request and Status answer list...........................................................................................................13
3-5-1. Normal Status request and Status answer list .....................................................................................13
4. Revision history...................................................................................................................................................17