MCP2150-I/SS - Microchip Technology

MCP215X

The MCP215X parts you have received conform

functionally to the MCP2150 and MCP2155 device

data sheets (DS21655B and DS21690A), except for

the anomalies described below.

MCP215X Rev. C devices have addressed these

issues.

1. Module: IR Protocol Handler

The MCP215X device will ignore queries from the

Primary device (PC, PDA) for the status of the

non-data circuits (CTS, RTS, DTR, DSR, CD, RI).

Work around

Do not have the Primary device application

request these signals for application operation.

2. Module: IR Protocol Handler

Some new Palm® PDA devices use a processor

(TI OMAP31X) that sends a non-standard number

of BOFs (4) prior to parameter negotiation. The

MCP215X device expects 11 BOFs.

When the Primary device sends the SNRM

command (including the requested number of

BOFs (1) to use), the MCP215X responds with a

UA response using this number of BOFs (1). Since

the response only contains a single BOF, the TI

OMAP31X processors ignore this response.

Therefore, the communication link with the

Primary device is not established.

Work around

Do not use Palm PDAs that use the TI (OMAP310

and OMAP311) processor. Some of the Palm

PDAs that have this processor include the

Tungsten™ E, Zire™ 71 and Zire 21.

The Tungsten T2 (TI OMAP1510 with OS V5.2.1)

does not appear to have a connection issue with

the MCP215X device and, therefore, can be used

to establish a communication link with MCP215X

devices.

The MCP2140 could be used, since it can connect

to Palm PDAs that use this TI (OMAP310 and

OMAP311) processor.

3. Module: IR Protocol Handler

The MCP215X IAS parser will supply LSAPSEL

response for more than just an IrDA:IrCOMM

LSAPSEL query. Some models of Pocket PC 2003

devices will issue an IrDA:IrObex LSAPSEL query

once the Pocket PC 2003 device has been

informed that its communicating with an IrCOMM

device. This causes the Ir link to not be established.

Work around

None for the MCP215X. However, the MCP2140

could be used and will respond to this Pocket PC

2003 IrDA:IrObex LSAPSEL query, allowing the Ir

link to be established.

4. Module: IR Protocol Handler

The MCP215X may supply an RR response

instead of a TinyTP Credit response to a received

data packet.

Work around

None.

Note: Currently, we have not observed any

loss of data or loss of communication

link when interfacing to other existing

IrDA® standard protocol stacks due to

this issue.

MCP215X Rev. B Silicon/Data Sheet Errata

MCP215X

Clarifications/Corrections to the Data

Sheet:

In the MCP2150 and MCP2155 device data sheets

(DS21655B and DS21690A), the following clarifications

and corrections should be noted:

1. An IrDA standard operating system (Symbian

OS™ for cell phones) has been encountered

that only sends out XID commands with a

Timeslot of 0. Since the MCP215X devices

respond to Timeslot 2, MCP215X devices are

not able to establish a link to an OS that is com-

pliant with the IrDA standard. The MCP2140 can

be used in these systems, since it responds to

the XIP command with Timeslot 0.

2. The MCP2150 emulates the state of all the non-

data circuits (CTS, RTS, DTR, DSR, CD and RI).

These signals on the MCP2150 are used to

interface with the embedded system’s host

controller. The values in the IrDA standard

packet response would not reflect the value on

the corresponding MCP2150 pin.

The MCP2155 emulates the state of the CTS, RTS

and DSR non-data circuits. These signals on the

MCP2155 are used to interface with the

embedded system’s host controller. The DTR, CD

and RI signal values are communicated to the IrDA

standard Primary device in an IrCOMM packet.

The MCP2155 will only send this information when

the state of one of these signals change. The

MCP2155 devices will ignore any request for the

status of the non-data circuits from the IrDA

standard Primary device.

APPENDIX A: REVISION HISTORY

Revision A (February 2006)

• Initial release of this document.

MCP215X

APPENDIX B: SILICON REVISION

HISTORY

The following table and package marking information

illustrates how to determine the revision of the

MCP215X device. The revision information can be

determined by the Year and Week Code of the

manufacture printed on the device.

TABLE B-1: SILICON REVISION/DEVICE

MARKING

Package Marking Information

Silicon

Revision

YYWWNNN Comments

Start Date End Date

Rev. C 0419NNN — In Production

Rev. B 0231NNN 0418NNN

Legend: “N” is any alphanumeric character.

18-Lead PDIP

18-Lead SOIC

20-Lead SSOP

Legend: XX...X Customer specific information*

YY Year code

(last 2 digits of calendar year)

WW Week code

(week of January 1 is week ‘01’)

NNN Alphanumeric traceability code

Note: In the event the full Microchip part number

cannot be marked on one line, it will be

carried over to the next line thus limiting

the number of available characters for

customer specific information.

*Standard marking consists of Microchip part

number, year code, week code and traceability

code.

MCP215XI/SS

XXXXXXXXXXX

XXXYYWWNNN

MCP215X-I/SO

XXXXXXXXXXXXXXXXX

XXXXXYYWWNNN

MCP215X-I/P

XXXXXXXXXXXXXXXXX

XXXXXYYWWNNN

MCP215X

NOTES:

Information contained in this publication regarding device

applications and the like is provided only for your convenience

and may be superseded by updates. It is your responsibility to

ensure that your application meets with your specifications.

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Printed on recycled paper.

Note the following details of the code protection feature on Microchip devices:

• Microchip products meet the specification contained in their particular Microchip Data Sheet.

• Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the

intended manner and under normal conditions.

• There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our

knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data

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code hopping

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