H - Electricity – 04 – L
Patent
H - Electricity
04
L
340/80
H04L 5/14 (2006.01) G06F 13/22 (2006.01) G06F 13/38 (2006.01)
Patent
CA 1301275
FR 9 87 030 ABSTRACT SCANNER INTERFACE FOR THE LINE ADAPTERS OF A COMMUNICATION CONTROLLER A line-adapter (1) of a communications controller includes, for scanning the teleprocessing lines (26) connected to it, cyclic scanning means FES (10) exchanging information with the lines (26) through a serial bidirectional link (12) on which data and control informations are partitioned into frames and slots. Since both the FES (10) and the serial link work with their own timings, an interface FESA (11) is provided to adapt the FES scanning to the serial link (12) structure. This FESA (11) includes temporary storage means (36, 38, 40, 42) for storing on the one hand, data and control information transmitted from the LICs (20) to the FES (10) through the inbound serial link (24), and on the other hand, data and control information transmitted from the FES (10) to the LICs through the outbound serial link (22). The access of the FES, the outbound and inbound serial link to the storage means is time-shared and granted by an arbitration logic, according to the relative priorities of operation of said elements within the line-adapter (1) of the communications controller. (Fig. 5)
569054
Granger Yves
Wind Daniel
Barrett B.p.
International Business Machines Corporation
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