DAN-135 Datasheet, PDF (2/2 Pages) Exar Corporation – EXAR XR16L580 COMPARED

receiving. This feature saves CPU bandwidth from a lot of software code manipulation. This feature is
not available in the TL16C754B.
• For wireless and portable applications, the XR16L784 has a built-in Infrared Data Association (IrDA)
encoder/decoder (ver 1.0). The TL16C754B does not have this feature.
1.3 CONCLUSION
The XR16L784 is a much simpler device to design than the TL16C754B because the XR16L784 has a sin-
gle chip select input and interrupt output. Since it is able to do simultaneous writes to all the channels, the
initialization of the XR16L784 is much easier and quicker than the TL16C754B. With a Global Interrupt
Source Register, data throughput is increased and multiple channels can be serviced per interrupt reduc-
ing CPU bandwidth requirements. In addition to that, the XR16L784 has many enhanced features for in-
creased performance that are not available in the TL16c754B as mentioned above in the Firmware Differ-
ences section.
NOTICE
EXAR Corporation reserves the right to make changes to the products contained in this publication in order
to improve design, performance or reliability. EXAR Corporation assumes no responsibility for the use of
any circuits described herein, conveys no license under any patent or other right, and makes no represen-
tation that the circuits are free of patent infringement. Charts and schedules contained here in are only for
illustration purposes and may vary depending upon a user’s specific application. While the information in
this publication has been carefully checked; no responsibility, however, is assumed for inaccuracies.
EXAR Corporation does not recommend the use of any of its products in life support applications where
the failure or malfunction of the product can reasonably be expected to cause failure of the life support sys-
tem or to significantly affect its safety or effectiveness. Products are not authorized for use in such applica-
tions unless EXAR Corporation receives, in writing, assurances to its satisfaction that: (a) the risk of injury
or damage has been minimized; (b) the user assumes all such risks; (c) potential liability of EXAR Corpo-
ration is adequately protected under the circumstances.
Copyright 2002 EXAR Corporation
June 2002
Send your UART technical inquiry with technical details to hotline: [e-mail]
Reproduction, in part or whole, without the prior written consent of EXAR Corporation is prohibited.
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