Data Modem Data Pump
For Floating-Point DSPs
by Dallas Signal Processing, Inc.

Software Overview

The Dallas Signal Processing V22bis-C30 is a DSP-based 2400-bps modem algorithm that implements the 
notes V.22bis, BELL 212A, and BELL 103. The software implements all the functions of a modem 
chipset.  It may be used with digital lines (T1) or with an analog front end (codec and DAA). The 
code is a hardware-independent-callable routine with an interface similar to that of a modem chip.

Features and Benefits

•	2400, 1200, and 300 bps
•	Field tested with most modems and line qualities
•	Field tested over United States and international lines
•	Software is structured and easy to install

Processor and System Specifications

•	Devices supported: TMS320C3x, TMS320C4x

Usage Limitations or Performance Considerations

•	Algorithm category: Telecommunications
•	Program memory usage: 8000 words
•	Data memory usage: 2048 words
•	Processor loading: 50% of a `C31

Algorithm Verification

•	Fully implements V.22bis, V.22, BELL 212A, and BELL 103
•	Operation over 3002 worst-case lines

Availability

•	Available now

Company Background and Contact Information

Dallas Signal Processing is a small company specializing in DSP-based modem software. Our products 
include data as well as fax modems for TI's fixed-point and floating-point processors.

Contact:	Talal Itani
		Dallas Signal Processing, Inc.
		4112 Cassandra Lane
		Plano, Texas  75093
		(214) 867-1739
		(214) 867-5683