CobraNet Hardware User’s Manual
Table of Contents
DS651UM21
©
Copyright 2004 Cirrus Logic, Inc.
3
Version 2.1
Table of Contents
1.0 Introduction ...................................................................................................................................... 5
2.0 Features .......................................................................................................................................... 6
2.1 CobraNet ............................................................................................................................ 6
2.2 CobraNet Interface ............................................................................................................. 6
2.3 Host Interface ..................................................................................................................... 7
2.4 Asynchronous Serial Interface............................................................................................ 7
2.5 Synchronous Serial Audio Interface ................................................................................... 7
2.6 Audio Clock Interface ......................................................................................................... 7
2.7 Audio Routing and Processing ........................................................................................... 7
3.0 Hardware ......................................................................................................................................... 8
4.0 Pinout and Signal Descriptions........................................................................................................ 9
Asynchronous Serial Port (UART Bridge) Signals ........................................ 12
Synchronous Serial (Audio) Signals.............................................................. 13
Internal Mode with External Sample Synchronization ................................... 17
External Master Clock Mode with External Sample Synchronization............ 18
7.1 Hardware .......................................................................................................................... 23
7.3 Protocol and Messages .................................................................................................... 26
7.3.1.1. Translate Address ................................................................................. 27
7.3.1.2. Interrupt Acknowledge........................................................................... 27
7.3.1.3. Goto Packet........................................................................................... 27
7.3.1.4. Goto Translation .................................................................................... 27
7.3.1.5. Packet Received ................................................................................... 28
7.3.1.6. Packet Transmit .................................................................................... 28
7.3.1.7. Goto Counters ....................................................................................... 28