WIRELESS BASE STATION - National Semiconductor

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General Description

National Semiconductor offers several tools for the

evaluation of its high-speed data converters for wire-

less base stations. These tools include evaluation

boards, software and user guides. Listed in Table 1

below are the high-speed A/D and D/A converters

and associated evaluation boards that are available

from the Wireless Base Station group.

National also offers data acquisition hardware to

simplify evaluation of the high-speed A/D converters

and the Diversity Receiver Chip Set.

The Data Capture Board, CLC-CAPT-PCASM,

provides a means to easily collect and process data

from different evaluation boards when connected

to the user’s PC. The data capture board enables

simple evaluation of National Semiconductor’s High

Speed Analog to Digital Converters (ADCs) and

the Diversity Receiver Chip Set (DRCS). These

evaluation boards connect directly to the data

capture board. The data capture board interfaces

the outputs of these devices to the standard serial

port available on the back of most PCs. PC software

is provided with the Data Capture Board to control

the data capture function and Matlab

scripts are

also supplied for data analysis.

Interoperability Items

ADC and DRCS evaluation boards:

Many of the evaluation boards (i.e. ADCs and

DRCS) can be interfaced directly with the Data

Capture Board. The Data Capture Board uses

a “Dual Row 64 Position DIN Connector” for

interfacing with evaluation boards. Newer evaluation

boards use a “Four Row 96 Position and Four Row

24 Position Futurebus+ Connector” for interfacing

with data acquisition tools. In order for these boards

to interface with the Data Capture Board, an adapter

(i.e. ADC/DRCS to capture CLC730107) is used to

interface between the DIN connector on the Data

Capture Board and the Futurebus+ connector on

these new evaluation boards.

Figures 1 and 2 on page 2, are photos taken of the

connectors being used on the ADC and DRCS

evaluation boards as well as the Data Capture

Board. In Figure 1, the Data Capture Board with its

DIN connector is shown on the bottom of the photo

with an evaluation board that also has a DIN

connector shown at the top of the photo. In this

case, no adapter is required for the Data Capture

Board to interface with the evaluation board.

Wireless Base Station Evaluation Board

Interoperability Guide

October 2000

Wireless Base Station Evaluation Board

Interoperability Guide

Table 1: High-Speed A/D and D/A Converters and Evaluation Boards

A/D Converter and DRCS Products Evaluation Board ID

CLC952 12-bit, 41MSPS A/D Converter CLC952PCASM

CLC5956 12-bit, 65MSPS A/D Converter CLC5956PCASM

CLC5957 12-bit, 70MSPS A/D Converter CLC5957PCASM

CLC5958 14-bit, 52MSPS A/D Converter CLC5958PCASM

Diversity Receiver Chipset (DRCS) CLC-DRCS-PCASM*

CLC-DRCS7-PCASM

Data Capture Board CLC-CAPT-PCASM

*No longer available as of 10/01/00

D/A Converter Products Evaluation Board ID

DAC14135 14-bit, 135MSPS D/A Converter DAC14135PCASM

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Figure 1: Data Capture Board and Evaluation Board with DIN Connectors

Figure 2: Data Capture Board with DIN Connector, Adapter Board,

and Evaluation Board with Futurebus+ Connector

In Figure 2, the Data Capture Board with its DIN connec-

tor is shown at the bottom of the photo. An evaluation

board with a Futurebus+ connector is shown at the top of

the photo. The required adapter board is shown between

the Data Capture Board and the evaluation board.

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Figure 3: Extra DIN Connector with Solder Pins Showing that Must Be Removed

DAC evaluation boards:

There are no interoperability issues for the DAC14135.

Interoperability Matrix:

In Table 2 below, the required hardware necessary to use each evaluation board with the Data Capture Board is listed:

Table 2: Evaluation board interface matrix

REQUIRED HARDWARE

Evaluation

Boards

ADC/DRCS to

Capture CLC730107

Adapter Board

CLC-CAPT-PCASM

CLC952PCASM – X

CLC5956PCASM – X

CLC5957PCASM – X

CLC5958PCASM – X

CLC-DRCS-PCASM – X

CLC-DRCS7-PCASM X X

Remove for

use with Data

Capture

Board

NOTE: A mating connector comes with each A/D or

DRCS evaluation board that can be attached to the DIN

connector on the board. The mating connector allows the

evaluation boards to be wired to a custom ﬁxture or

customer speciﬁc circuit. In Figure 3, the Data Capture

Board with its DIN connector is shown at the bottom of

the photo. An evaluation board with a mating connector

attached to its DIN connector is shown at the top of the

photo.

This mating connector must not be attached to

an A/D or DRCS evaluation board DIN connector

when interfacing to the Data Capture Board.

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of the president of National Semiconductor Corporation. As used herein:

1. Life support devices or systems are devices or systems which, a) are intended for surgical implant into the body, or b) support or

sustain life, and whose failure to perform, when properly used in accordance with instructions for use provided in the labeling, can

be reasonably expected to result in a signiﬁcant injury to the user.

2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to

cause the failure of the life support device or system, or to affect its safety or effectiveness.

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Wireless Base Station Evaluation Board

Interoperability Guide