Postman2-FedX Smart Speaker Interface Spec 1.6 电路图.pdf

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1、Postman2/FedX Hardware Interface Specifications P2/FedX Smart Speaker Interface Spec DS 268891 Rev 1.6 7/28/03 RadioFans.CN 收音机爱 好者资料库 REVISIONS . 5 1.0 SPEC OVERVIEW . 6 1.1 SCOPE . 6 1.2 DEFINITIONS . 6 1.3 GUIDING PRINCIPLES . 6 1.4 NEW FEATURES . 7 1.5 OPERATIONAL OVERVIEW . 7 2.0 FEATURES OF TH

2、E POSTMAN2/FEDX SMART SPEAKER BUS . 9 2.1 DIFFERENCES FROM POSTMAN1 . 9 2.1 NUMBER OF SPEAKERS SUPPORTED PER ZONE . 9 2.2 PLUG AND PLAY CAPABILITY . 9 2.3 SUPPORT FOR LSA1 ON ZONE2 . 9 2.4 SUPPORT FOR A SINGLE LEGACY VARIABLE SPEAKER . 9 3.0 PHYSICAL (HARDWARE) INTERFACE . 10 3.1 OVERVIEW OF THE PHY

3、SICAL BUS . 10 3.2 TRANSMITTER DETAILS . 10 3.2.1 Reference Transmitter Circuit . 10 3.2.2 General Transmitter Electrical Requirements . 11 3.2.3 Worst-Case Drive Waveforms . 11 3.3 RECEIVER DETAILS . 12 3.3.1 Reference Receiver Circuits . 12 3.3.2 General Receiver Electrical Requirements . 12 3.4 +

4、10V TURN-ON LINE . 13 3.5 AUDIO INTERFACE DETAILS. 13 3.5.1 Console S/PDIF Output for the Main Room . 13 3.5.2 Console Analog Outputs for Non-Main Rooms . 13 3.5.3 Differential Inputs for Networked Speakers. 13 3.5.4 Zone1/Zone2 Input Selection MUX for Networked Speakers . 14 3.6 THE P2/FEDX CONSOLE

5、 SPEAKER OUTPUT MINI-DIN CONNECTORS . 14 3.7 THE INPUT MINI-DIN CONNECTOR FOR NETWORKED SPEAKERS . 15 3.8 CABLING DETAILS . 15 3.8.1 Bose Pre-Terminated Cables (Zone 2 Expansion Cables) for New Speakers . 15 3.8.2 Using the Bose System Cable (257187) with New Speakers . 16 3.8.3 Connecting Legacy AM

6、5P/20P Speakers . 16 3.8.4 Connecting Legacy LSA1 Speakers . 16 3.8.5 Connecting Legacy 901P Speakers . 17 3.8.6 Mixing Legacy and New Speakers On the Same Network . 17 3.8.7 Using Existing Bose Wall Plates, etc. . 18 4.0 LOW-LEVEL PROTOCOL BASICS . 19 4.1 ALLOWABLE LOGIC LEVELS . 19 4.2 ALLOWABLE B

7、IT WIDTHS . 19 4.3 MESSAGE TIMING REQUIREMENTS . 20 4.4 GUARANTEEING MESSAGE SYNCHRONIZATION . 20 4.5 RECOMMENDATIONS FOR SOFTWARE DRIVERS . 21 4.5.1 Optimized Low-level Receiver . 21 4.5.2 Transmit/Receive Timing for the Master . 21 5.0 MESSAGE PACKET OVERVIEW . 22 5.1 HEADER BYTE (1ST MESSAGE BYTE

8、) . 22 5.2 CONSOLE MESSAGE ADDRESS BYTE (2ND MESSAGE BYTE) . 22 RadioFans.CN 收音机爱 好者资料库 5.3 SPEAKER MESSAGE ADDRESS BYTE (2ND MESSAGE BYTE) . 23 5.4 ARGUMENT BYTE(S) . 23 5.5 VERIFIER BYTE (LAST MESSAGE BYTE) . 23 6.0 RULES FOR EXCHANGES . 24 6.1 ONLY THE MASTER GENERATES SPONTANEOUS MESSAGES . 24 6

9、.2 THE MASTER NEVER INTERRUPTS AN EXCHANGE IN PROGRESS . 24 6.3 A SLAVE ONLY TRANSMITS IMMEDIATELY FOLLOWING MESSAGES ADDRESSED TO IT . 24 6.4 A SLAVE MUST REPLY TO EVERY MESSAGE ADDRESSED TO IT . 24 6.5 A SLAVE MUST REPLY WITH THE HIGHEST-PRIORITY INFORMATION CURRENTLY PENDING . 24 6.5.1 Highest Pr

10、iority: Non-Poll Query Replies . 24 6.5.2 Medium Priority: Pass_Key_Code Messages . 24 6.5.3 Medium Priority: Download_Information Messages . 25 6.5.4 Lowest Priority: Poll Replies . 25 6.6 A MASTER CONTINUOUSLY POLLS ALL SPEAKERS, BUT AS A LOW PRIORITY . 25 6.7 A MASTER MUST TRANSMIT THE HIGHEST-PR

11、IORITY MESSAGE CURRENTLY PENDING . 25 6.7.1 Highest Priority: Non-Poll Queries and Control Messages . 25 6.7.2 Medium Priority: Pass_Key_Code Messages . 25 6.7.3 Medium Priority: Download_Information Messages . 25 6.7.4 Lowest Priority: Polls . 25 6.8 ONLY ONE SPEAKER WILL BE POLLED DURING A QUERY E

12、XCHANGE . 25 6.8 FULL LIST OF COMMANDS USED OUTSIDE THE MAIN ROOM . 26 6.8.1 POLL and POLL REPLY Messages (Headers 0 x00/0 x80) . 26 6.8.2 ON/OFF Message (Header 0 x01) . 26 6.8.3 PASS_KEY_CODE Message (Headers 0 x0D/0 x8D) . 26 6.8.4 SET_MAIN_ATTENUATION Message (Header 0 x02) . 26 6.8.5 QUERY_SPEA

13、KER_INFO Message (Header 0 x0B) . 26 6.8.6 DOWNLOAD_INFORMATION Message (Headers 0 x0A/0 x8A) . 26 7.0 THE POLLING CYCLE . 27 7.1 OVERVIEW . 27 7.2 POLLING CYCLE TIMING DETAILS . 27 7.3 TYPICAL POLL AND REPLY MESSAGE BYTES . 28 7.4 USING THE PASS_KEY_CODE MESSAGE AS A REPLY (HEADER 0X8D . 28 7.5 USI

14、NG THE DOWNLOAD_INFORMATION MESSAGE (0X8A) AS A REPLY . 28 8.0 HIGH-LEVEL SPEAKER CONTROL ISSUES . 29 8.1 MASTER/SLAVE CONFIGURATION . 29 8.2 ROOM ADDRESSING MUST BE UNIQUE . 29 8.3 MANAGING SEPARATE PHYSICAL BUSES FOR ZONE1 AND ZONE2 . 29 8.4 SPEAKER CONTROL MODES . 29 8.5 DETECTING NEW SPEAKERS. 3

15、0 8.6 POWERING-UP NETWORKED SPEAKERS . 30 8.7 DETECTING SPEAKER STATUS CHANGES THROUGH POLLING . 30 8.7.1 Speaker Turn On/Off . 30 8.7.2 Speaker Source Changes . 30 8.8 MANAGING SPEAKER STREAM SWITCHING . 30 9.0 MESSAGE DEFINITIONS . 31 9.1 QUICK REFERENCE TABLES . 31 9.2 MESSAGES SENT BY THE CONSOL

16、E . 32 9.2.1 POLL Message (Header 0 x00) . 32 9.2.2 ON/OFF Message (Header 0 x01) . 33 9.2.3 SET MAIN ATTENUATION Message (Header 0 x02) . 34 9.2.4 SET SECONDARY LEVELS Message (Header 0 x03) . 35 9.2.5 SET EQ TYPE/TONE LEVELS Message (Header 0 x04) . 36 9.2.6 SET SPEAKER MODE Message (Header 0 x05) .