CB-ACC-36【PDF 5/58 页】ANTENNA 1/2WV 2.4GHZ 10CM RPSMA

Version 1.17 2011-09

1 Introduction

1.1 Migrating from Bluetooth 1.1 to 2.0 products

A migration from a cB-OEMSPA13 or cB-OEMSPA33 module to a cB-OEMSPA311 or cB-

OEMSPA331 module is normally done without any problems. Even so, there are some

issues that have to be considered.

- The resistance value of the pull-down resistors needs to be decreased to 1k&. It is

especially important to be observant on the Mode and Switch-1 signals. This point is not

necessary for the cB-OEMSPA333 modules and 10k& can still be used. See the LED

and Switch Design Examples for more info.

- The High- and Low-signal definitions are slightly changed on the Logic Level signals.

Especially consider the Low-level definition on the Switch-0 signal. See the Input/Output

signals in the Characteristics section for more info.

- A 5V system using resistor dividers to adapt the 5V TxD output signal of the host to the

3V levels of the OEMSPA RxD input signal should decrease the resistor values to 1.8k&

and 2.2k&. See the Logic Levels Design Examples for more info.

1.2 Related Documents

There are some documents related to the Serial Port Adapter:

- The Serial Port Adapter AT Commands document contains a description of the AT

commands supported in the Serial Port Adapter. It also contains information on how to

use the AT commands to create Bluetooth applications.

- The OEM Serial Port Adapter Electrical & Mechanical Datasheet (this document)

contains important information about the OEM Serial Port Adapter. Read this document

if you are using the OEM Serial Port Adapter.

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