Datasheet

ADSP-21479 EZ-Board Evaluation System Manual 1-21

Using ADSP-21479 EZ-Board

Expansion Interface II

The expansion interface II allows an Analog Devices EZ-Extender or a

custom-design daughter board to be tested across various hardware plat-

forms with identical expansion interfaces.

The expansion interface II implemented on the ADSP-21479 EZ-Board

consists of two connectors: a 0.1 in. shrouded header (P2) and a Samtec

QMS series header (J1). The connectors contain a majority of the

ADSP-21479 processor’s signals.

For pinout information, go to “ADSP-21479 EZ-Board Schematic” on

page B-1. The mechanical dimensions of the expansion connectors can be

obtained by contacting Technical or Customer Support.

For more information about daughter boards, visit the Analog Devices

Web site at:

http://www.analog.com/en/embedded-processing-dsp/sharc/con-

tent/sharc_development_tools/fca.html

Limits to current and interface speed must be taken into consideration

when using the expansion interface II. Current for the expansion

interface II is sourced from the EZ-Board; therefore, the current should be

limited to 1A for 5V and 500 mA for the 3.3V planes. If more current is

required, then a separate power connector and a regulator must be

designed on a daughter card. Additional circuitry can add extra loading to

signals, decreasing their maximum effective speed.

Analog Devices does not support and is not responsible for the

effects of additional circuitry.

Power Measurements

Several locations are provided for measuring the current draw from vari-

ous power planes. Precision 0.05 ohm shunt resistors are available on the