TWR-PROTO Freescale Semiconductor, TWR-PROTO Datasheet

TWR-PROTO

Manufacturer Part Number

TWR-PROTO

Description

TOWER SYSTEM PROTO

Manufacturer

Freescale Semiconductor

Datasheets

1.TWR-PROTO.pdf (2 pages)

2.TWR-PROTO.pdf (2 pages)

3.TWR-MCF5225X.pdf (4 pages)

Specifications of TWR-PROTO

Accessory Type

ProtoBoard

Product

Breadboards / Protoboards

Description/function

Prototyping Module

Dimensions

90 mm x 80 mm

Development Tool Type

Hardware / Software - Eval/Demo Board

Kit Contents

Board, Cable, CD

Leaded Process Compatible

Yes

Mcu Supported Families

Tower Development System

Rohs Compliant

Yes

For Use With/related Products

Freescale Tower System

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

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TWR-PROTO Module Errata

Issue:

The following issue has been discovered with the secondary PCI edge connector on the

TWR-PROTO Rev. A boards. The Power Sense signal on the secondary side of the edge

connector is tied directly to the 3.3V signals on both the primary and secondary edge

connectors. The Power Sense Signal is located on Pin B4 on both the Primary and

Secondary edge connectors.

The Power Sense signal is also connected to B4 and D4 on the TWR-PROTO Primary

and Secondary Connector Signal Access areas. The D4 (Secondary Connector Signal

Access) is connected directly to the 3.3V signals.

Impact:

This issue has the potential of connecting the 5V Power Sense signal to the 3.3V power

supply if the TWR-PROTO module’s secondary edge connector is inserted into a

functional TWR-ELEV.

The following cases will cause the issue to manifest and should be avoided:

Solution:

The Power Sense signal on the secondary edge connector should be cut. This will isolate

the 3.3V rail from the 5V Power Sense signal. Note that D4 in the Secondary Connector

Signal Access will no longer be connected to the Power Sense signal and should be

considered a 3.3V signal.

1) The TWR-PROTO module will inserted backwards into a basic Tower system,

2) The TWR-PROTO module is used with two function elevators. To fully utilize

consisting of at minimum a TWR-PROTO and TWR-ELEV’s (Functional and

Dummy). In this scenario “backwards” is defined at the TWR-PROTO module’s

secondary edge connector being inserted into the functional elevator and the

primary edge connector being inserted into the dummy elevator.

all functions of certain MCU and MPU Tower module two functional elevators

can be used to expand the secondary backplane to all Tower modules in the

Tower System. The TWR-PROTO Rev A. board should not be used in a Tower

System with dual functional elevators.

Related parts for TWR-PROTO

TWR-PROTO Summary of contents

Page 1

... The Power Sense Signal is located on Pin B4 on both the Primary and Secondary edge connectors. The Power Sense signal is also connected to B4 and D4 on the TWR-PROTO Primary and Secondary Connector Signal Access areas. The D4 (Secondary Connector Signal Access) is connected directly to the 3.3V signals. ...

Page 2

... Figure 1 shows the impacted area of the TWR-PROTO module. The B4 edge connector pin on the secondary side is connected to B3 edge connector pin and C3, C4, D3 the Secondary Connector Signal Access. Figure 2 - TWR-PROTO - Modified Board Image Figure 2 show a TWR-PROTO board that has been correctly modified to isolate the B4 edge connector pin from 3.3V signals. ...

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