STD402CS 2 Channel Audio Development Kit

STD402CS
2 Channel Audio Development Kit

Brochure: std402cs_br.pdf (415 KB)
Quick Start : std402cs_qs.pdf (860 KB)

Kit Includes:

DT402EB Evaluation Board
DT4218DB Audio Daughterboard
ZSP-USB-JTAG Emulator
HPI-USB Host Port Interface
User Guide

Overview

Enhance your ZSP based product development and testing using this two channel audio development system. The STD402CS provides stereo audio input and output for the advanced DT402EB evaluation board with access to all ZSP 402ZX peripherals and external memory. An external ZSP-USB-JTAG emulator allows for independent control of the JTAG port, and the HPI-USB interface provides up to 400K bytes of the real-time data transfer between the ZSP host port and the host PC.

In addition, sample projects for ZViewIDE and a helpful user guide are also provided.

Features

DT402EB Features:

402ZX 200 MHz ZSP
256Kx16 SRAM
512Kx16 Flash ROM
2x16 characters LCD Display
16 LEDs controlled by ZSP
8 push button switches
12.288 MHz clock oscillator
2 20-pin serial ports (SPORT)
3 26-pin ports for user signals
Dimensions: 7"x5.5"

DT4218DB Features:

16-bit Stereo Audio Codec
∆∑ A/D and D/A converters
Stereo Line In/Out
Dual MIC In
Sampling Rates: 48 - 7.35 kHz
Dimensions: 3"x2"

HPI-USB Features:

USB1.1 with FTDI FT245
8-bit 25 MHz microcontroller
Data transfer rate: 400 KB/s
4 status LEDs

ZSP-USB-JTAG Features:

ZSP data transfer 24 KB/s
Fixed TCK ~400kHz
3.3V JTAG Interface
USB Bus powered
Dimensions: 2.5"x1.7"

Description

The STD402CS is a 2 channel audio development kit containing the DT402EB evaluation board, the DT4218DB audio board, the ZSP-USB-JTAG emulator, and HPI-USB for data transfer.

The DT402EB features the 402ZX 200 MHz ZSP with 256K words of external SRAM and 512K words of external Flash, a programmable CPLD (Lattice LC4128V) containing external memory decode logic, LCD and LED controllers, a 16-bit user I/O controller, and a rotary switch for selection of the ZSP operating frequency. Built in are two serial port connectors and an external host port interface. The DT402EB has either an external power supply or utilizes the USB.

The DT4218DB features the Cirrus Logic CS4218 16-bit stereo Delta-Sigma Codec. With two external clock sources, it supports sampling rates of 48 8 kHz and 44.1 - 7.35 kHz. It features stereo line level output and a user selectable option of stereo line level input/ dual microphone. The microphone circuit supports electret microphones with bias voltage and pre-amp module. The board features an 8-bit microcontroller providing an I2C interface to the ZSP, a controlling oscillator selection as well as programming of the codec operating features.

The ZSP-USB-JTAG emulator provides a low cost solution for interfacing to the JTAG port of the ZSP. The built-in microcontroller provides low level logic for the software or hardware emulation protocol of the ZSP devices. The emulator's test clock (TCK) frequency varies between 1 MHz and 400 kHz depending on the executed operation. The JTAG interface has logic levels of 3.3V but will also operate with 2.5V targets.

The HPI-USB is based on the USB 1.1 interface device from FTDI and the 8 bit, 25 MHz microcontroller from Silicon Laboratories. It can operate in either the Intel or Motorola host port strobe modes and allows for continuous data transfer at rates up to 400K bytes per second.

Pre-programmed, sample applications are provided for use with ZViewIDE ; the Integrated Development Environment is a windows based, open, industry supported, extensible software development environment which provides a compiler, linker, source code project manager, editors, and a ZSP target debugger.

Demo Software

Utilize the demo software, sources included, to test the CS4218 chip on the DT4218DB audio daughterboard. The Graphical user interface of the demo monitors incoming waveforms and displays their amplitude values. For more information on the demo software, please review the Users Guide: dt4218db_ug.pdf (453 KB).

Ordering Information
STD402CS	2 channel audio development kit

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