Arrangement for the individual adaptation of a serial interface

Details Arrangement for the individual adaptation of a serial interface Arrangement for the individual adaptation of a serial interface

1986-10-20

1989-08-01

Harkcom, Gary V.

Boots, shoes, and leggings

H04L 2540, H04L 700, G06F 300

Patent

active

048538418

ABSTRACT:
An arrangement, for adapting the serial interface of a data processing system to the data speed of a communication partner, has a recognition circuit for recognizing the transmission speed wherein signals from the communication partner having the unknown transmission speed are inputted to a frequency counter of the recognition circuit and the resulting count provided to a microprocessor which calculates an adjustment division signal N from the counting results. The adjustment divison signal N is inputted to a frequency divider of a phase lock loop (PLL) circuit of an adjustment circuit to provide a divided clock frequency signal which is compared with a divided reference frequency signal by the PPL circuit so that the frequency of a voltage control oscillator of the PLL circuit is adjusted until the divided clock frequency signal and divided reference frequency signal are equal. The adjusted voltage control oscillator signal is inputted to the microprocessor from which a matching data transmission speed equal to the data transmission speed of the communication partner is calculated.

REFERENCES:
patent: 3602900 (1971-08-01), Delaigue et al.
patent: 3962541 (1976-06-01), Seidel
patent: 4129748 (1978-12-01), Saylor
patent: 4227178 (1980-10-01), Gergaud et al.
patent: 4338677 (1982-07-01), Morrill, Jr. et al.
patent: 4458308 (1984-07-01), Holtey et al.
patent: 4490821 (1984-12-01), Lacher
patent: 4507732 (1985-03-01), Catiller et al.
patent: 4509121 (1985-04-01), Rey et al.
"Use ICs in Your Phase-Locked Loop", Electronic Design, Apr. 1968, pp. 76-80.
"Electronic Communications", Third Edition, 1984, pp. 221-224.
"Data-Comm, Telecomm. ICs-Moving to Single Chips and More Intelligence", Electronic Design, vol. 31, Apr. 1983, pp. 93-104.
"68000 Peripheral Chips Assume I/O Tasks & More", Electronic Design, vol. 31, Oct. 1983, pp. 123-128.

Affiliated with

Also associated with

Rating

Arrangement for the individual adaptation of a serial interface does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Arrangement for the individual adaptation of a serial interface , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Arrangement for the individual adaptation of a serial interface will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-136230