H - Electricity – 04 – J
Patent
H - Electricity
04
J
363/11
H04J 3/02 (2006.01) H04B 7/212 (2006.01) H04J 3/16 (2006.01)
Patent
CA 1151325
MULTIPLE DATA RATE DIGITAL SWITCH FOR A TDMA COMMUNICATIONS CONTROLLER Abstract A multiple data rate digital switch for a TDMA communi- cations controller is disclosed which can service a plurality of input/output ports having many different data rates on a time divided basis, either between ports connected to the same controller or between ports connected to different, geographically remote con- trollers. A transmit burst buffer and a receive burst buffer are connected between the local ports and a TDMA communication link and an intranodal buffer is con- nected between local ports. A11 three buffers are accessed by a switch control memory which stores ni control words for each of the ports which are scanned m times per TDMA frame, there being a frame rate of f frames per second. Thus, the ports are selected and their data is buffered at a rate Ri which is equal to the product of ni times m times f. In this manner, ports having a variety of data rates can be serviced on a time interleaved basis with maximum connectivity. MA9-80-005
370959
Alvarez Joseph A.
Brennen John F,
Krug Robert W.
International Business Machines Corporation
Saunders Raymond H.
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