Version 2.3

CobraNet Hardware User’s Manual

List of Figures

Figure 1. CobraNet Data Services .........................................................................................................5

Figure 2. CobraNet Interface Hardware Block Diagram.........................................................................8

Figure 3. Audio Clock Sub-system.......................................................................................................17

Figure 4. Channel Structure for Synchronous Serial Audio at 64FS (One Sample Period) -

CS18100x/CS49610x & CS18101x/CS49611x ............................................................19

Figure 5. Channel Structure for Synchronous Serial Audio at 128FS (One Sample Period) -

CS18102x/CS49612x ...................................................................................................19

Figure 6. Timing Relationship between FS512_OUT, DAO1_SCLK and FS1.....................................20

Figure 7. Serial Port Data Timing Overview.........................................................................................20

Figure 8. Audio Data Timing Detail - Normal Mode, 64FS -

CS18100x/CS49610x, CS18101x/CS49611x ..............................................................21

Figure 9. Audio Data Timing Detail - Normal Mode, 128FS -

CS18102x/CS49612x ...................................................................................................21

Figure 10. Audio Data Timing Detail - I

S Mode, 64FS -

CS18100x/CS49610x, CS18101x/CS49611x ..............................................................21

Figure 11. Audio Data Timing Detail - I

S Mode, 128FS -

CS18102x & CS49612x................................................................................................21

Figure 12. Audio Data Timing Detail - Standard Mode, 64FS -

CS18100x/CS49610x, CS18101x/CS49611x ..............................................................22

Figure 13. Audio Data Timing Detail - Standard Mode, 128FS -

CS18102x/CS49612x ...................................................................................................22

Figure 14. Host Port Read Cycle Timing - Motorola Mode .................................................................. 25

Figure 15. Host Port Write Cycle Timing - Motorola Mode...................................................................25

Figure 16. Parallal Control Port - Intel Mode Read Cycle .................................................................... 27

Figure 17. Parallel Control Port - Intel Mode Write Cycle .................................................................... 27

Figure 18. CM-2 Module Assembly Drawing, Top ...............................................................................38

Figure 19. CM-2 Module Assembly Drawing, Bottom ..........................................................................39

Figure 20. General PCB Dimensions...................................................................................................40

Figure 21. Example Configuration, Side View......................................................................................41

Figure 22. Faceplate Dimensions ........................................................................................................42

Figure 23. Connector Detail .................................................................................................................43

Figure 24. CM-2 RevF Schematic Page 1 of 7 .................................................................................... 44

Figure 25. CM-2 RevF Schematic Page 2 of 7 .................................................................................... 45

Figure 26. CM-2 RevF Schematic Page 3 of 7 .................................................................................... 46

Figure 27. CM-2 RevF Schematic Page 4 of 7 .................................................................................... 47

Figure 28. CM-2 RevF Schematic Page 5 of 7 .................................................................................... 48

Figure 29. CM-2 RevF Schematic Page 6 of 7 .................................................................................... 49

Figure 30. CM-2 RevF Schematic Page 7 of 7 .................................................................................... 50

Figure 31. 144-Pin LQFP Package Drawing ........................................................................................51

Figure 32. Device Part Numbering Explanation ................................................................................... 53

CobraNet Hardware User’s Manual

Introduction

Version 2.3

1.0 Introduction

This document is intended to help hardware designers integrate the CobraNet

interface

into an audio system design. It covers the CS18100x, CS18101x, CS18102x, CS49610x,

CS49611x, and CS49612x members of the CobraNet

Silicon Series of devices, where

“x” is the ROM version (ROM ID). This document also describes the CM-2 module with

schematics, mechanical drawings, etc.

CobraNet is a combination of hardware (the CobraNet interface), network protocol, and

firmware. CobraNet operates on a switched Ethernet network and provides the following

additional communications services.

• Isochronous (Audio) Data Transport

• Sample Clock Distribution

• Control and Monitoring Data Transport

The CobraNet interface performs synchronous-to-isochronous and isochronous-to-

synchronous conversions as well as the data formatting required for transporting real-time

digital audio over the network.

The CobraNet interface has provisions for carrying and utilizing control and monitoring

data such as Simple Network Management Protocol (SNMP) through the same network

connection as the audio. Standard data transport capabilities of Ethernet are shown here

as unregulated traffic. Since CobraNet is Ethernet based, in most cases, data

communications and CobraNet applications can coexist on the same physical network.

Figure 1 illustrates the different data services available through the CobraNet system.

Figure 1. CobraNet Data Services

Isochronous Data

(Audio)

Control Data

Clock

Unregulated

Traffic

Ethernet

Control Data

Isochronous Data

(Audio)

Unregulated

Tra ff i c

Clock

Version 2.3

CobraNet Hardware User’s Manual

Features

2.0 Features

2.1 CobraNet

• Real-time Digital Audio Distribution via Ethernet

• No Overall Limit on Network Channel Capacity

• Fully IEEE 802.3 Ethernet Standards Compliant

• Fiber optic and gigabit Ethernet variants are fully supported.

• Ethernet infrastructure can be used simultaneously for audio and data

communications.

• Free CobraCAD™ Audio Network Design Tool

• High-quality Audio Sample Clock Delivery Over Ethernet

• Bit-transparent 16-, 20-, and 24-bit Audio Transport

• Professional 48-kHz and 96-kHz sample rate

• Select Latency as Low as 1.33ms

• Flexible Many-to-many Network Audio Routing Capabilities

• Reduced-cost, Improved-performance, Convergent Audio Distribution

Infrastructure

2.2 CobraNet Interface

• 120 MIPS Customer-configurable Audio DSP

• Auto-negotiating 100Mbit Full-duplex Ethernet Connections

• Up to 32-channel Audio I/O Capability

• Implements CobraNet Protocol for real-time transport of audio over Ethernet.

• Local Management via 8-bit Parallel Host Port

• UDP/IP Network Stack with Dynamic IP Address Assignment via BOOTP or

RARP

• Remote Management via Simple Network Management Protocol (SNMP)

• Economical Three-chip Solution

• Available Module form factor allows for flexible integration into audio products.

• Non-volatile Storage of Configuration Parameters

• Safely Upgrade Firmware Over Ethernet Connection

• LED Indicators for Ethernet Link, Activity, Port Selection, and Conductor Status

• Watchdog Timer Output for System Integrity Assurance

• Comprehensive Power-on Self-test (POST)

• Error and Fault Reporting and Logging Mechanisms

Part #	CS181022-CQZ
Description	16X16 CHANNEL W/O DSP C-NET INTERFACE PROC. PB FREE - Tray
Category	IC
Availability	In Stock
Qty	15

Qty	Price
1 - 3	$24.90634
4 - 6	$19.81186
7 - 9	$18.67976
10 - 12	$17.35896
13 +	$15.47212

Manufacturer	Available	Qty
CIRRUS LOGIC Date Code: 0710	Freelance Stock: 2 Ships Immediately
CIRRUS LOGIC Date Code: 0637	Freelance Stock: 7 Ships Immediately
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CS181022-CQZ

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