EV-2 datasheet(4/44 Pages) CIRRUS

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Rev. 2.1

CobraNet™ EV-2

Introduction

The EV-2 provides a means of evaluating the CM-1 or CM-2 CobraNet™ Modules and the Cirrus

Logic CobraNet Silicon Series of devices. In addition to evaluating the CM-1 or CM-2 (hereafter

collectively referred to as the CM except where differences between the CM-1 and CM-2 exist),

the user may also use the EV-2 as a development platform and as an example interface for CMs,

the Cobranet Silicon Series, and other CobraNet related projects. The EV-2 connects to the CM

via the module's host interface. An 8051-type microcontroller interfaces to the CM's host port,

and a simple audio router on the EV-2 allows multiple audio inputs and outputs to connect to the

CM's serial audio interface. The EV-2 software provides a simple interface for audio routing on

the EV-2, as well as development support.

Features*:

•

Analog audio I/O: Two channels of analog audio input converted to high quality, 24-bit, 48

kHz or 96 kHz digital audio. Two channels of 24-bit, 48 kHz or 96 kHz digital audio con-

verted to high quality, analog audio output. Refer to Appendix B for audio I/O specifica-

tions.

•

Digital audio I/O: One stream of AES3 input and one stream of AES3 output. An AES3

stream is two channels of digital audio. The AES3 input stream is sample rate converted.

•

8051-type microcontroller: 64kB on-chip Flash Program Memory, 1kB internal SRAM,

32kB external SRAM and in-system programmability.

•

Field programmability: The supplied EV-2 software provides a means to reprogram EV-2

microcontroller firmware for field upgrades or user development.

•

RS232 Interfaces: Two RS232 interfaces, one direct to the CM and another to the micro-

controller.

Figure 1. EV-2 Block Diagram

Analog

Input

Analog

Output

VCXO

ADC

DAC

AES

LEDs

SRAM

Hex

Switches

RS232

Interfaces

FPGA

8051

Output

Input

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