公开(公告)号：DE3175985D1

公开(公告)日：1987-04-16

申请号：DE3175985

申请日：1981-10-28

Applicant: IBM ,  IBM FRANCE

Inventor： CALVIGNAC JEAN ,  GRANGER YVES ,  MASCLET ANDRE

IPC: H04L69/14 ,  G06F13/00 ,  G06F13/22 ,  G06F13/38 ,  G06F13/42

Abstract: The address generating device is provided for a communication line scanning device. The lines are connected to the scanning device through n line interface circuits, n varying in accordance with the network configuration. Each interface circuit can be connected to a various number of lines, for instance one line or k lines in a preferred embodiment, and comprises means for providing to the address generating device, a presence indicating signal indicating that it is plugged and a signal indicating the number of the lines connected thereto. A first logic circuit receives the presence indicating signals as inputs and generates on its outputs the address bits of the last present interface circuit to be scanned. A first counter able to count in binary mode up to n-1 is incremented by an increment pulse provided by a clock on each period assigned to the scanning of a line. This counter outputs the address bits of the successive interface circuits. A comparator compares the address bits so generated and the address bits of the last present interface circuit to be scanned and outputs a reset signal when these bits are equal.

公开(公告)号：DE3874517D1

公开(公告)日：1992-10-15

申请号：DE3874517

申请日：1988-01-22

Applicant: IBM

Inventor： GRANGER YVES ,  WIND DANIEL

IPC: G06F13/22 ,  G06F13/38

Abstract: The line-adaptor includes, for scanning the teleprocessing lines (26) connected to it, a cyclic scanner FES exchanging information with lines through a serial bidirectional link (12) on which data and control informations are partitioned into frames and slots. Since both the FES 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 a temporary storage (36, 38, 40, 42) for storing on the one hand, dta and control information transmitted from an inbounded serial link (24), and on the other hand, data and control information transmitted from the FES to the LICs through the outbound serial link (22). The access of the FES, the outbound and inbound serial link to the store time-shared and granted by an arbitration logic, according to the relative pirorities of operation of the elements within the line-adaptor of the communications controller.

公开(公告)号：DE3874517T2

公开(公告)日：1993-04-08

申请号：DE3874517

申请日：1988-01-22

Applicant: IBM

Inventor： GRANGER YVES ,  WIND DANIEL

IPC: G06F13/22 ,  G06F13/38

Abstract: 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 t (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.

公开(公告)号：DE3889214D1

公开(公告)日：1994-05-26

申请号：DE3889214

申请日：1988-01-22

Applicant: IBM

Inventor： BADAOUI MOHAMED ,  DAMBRICOURT RICHARD ,  FRANQUENOUILLE JEAN-PAUL ,  GARCIA CHRISTIAN ,  SPALMACIN-ROMA SYLVIE ,  GRANGER YVES

IPC: H04L69/14 ,  G06F12/06 ,  G06F13/22 ,  G06F13/38 ,  H04L12/403 ,  H04L12/52

Abstract: A scanning protocol is provided for the scanning of a plurality of the serial transmission lines (26) connecting users' devices to the scanning means (10, 16, 17) of a communication device, said lines being coupled to the scanning means through line interface couplers (LICs) (20) having each a wired address (n, n min , ...) known to the scanning means. This scanning protocol requires that for each LIC configuration, a given LICn, having a wired address n, be re-addressable with a logical address n min corresponding to the wired address of any other active LICn min , in order to determine, for said LIC configuration, the shortest possible scanning scheme including all the active LICs. The re-addressing of a LICn of wired address n, with a logical address n min , includes the steps of : - resetting the LICn to be affected a logical address n min , - setting the logical address n min into LICn; - locking said logical address n min into said LICn, and - enabling the lines (26) connected to LICn re-addressed with logical address n min .

公开(公告)号：CA1301275C

公开(公告)日：1992-05-19

申请号：CA569054

申请日：1988-06-09

Applicant: IBM

Inventor： GRANGER YVES ,  WIND DANIEL

IPC: G06F13/22 ,  G06F13/38 ,  H04L5/14

Abstract: FR 9 87 030 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)

公开(公告)号：DE3889214T2

公开(公告)日：1994-11-17

申请号：DE3889214

申请日：1988-01-22

Applicant: IBM

Inventor： BADAOUI MOHAMED ,  DAMBRICOURT RICHARD ,  FRANQUENOUILLE JEAN-PAUL ,  GARCIA CHRISTIAN ,  SPALMACIN-ROMA SYLVIE ,  GRANGER YVES

IPC: H04L69/14 ,  G06F12/06 ,  G06F13/22 ,  G06F13/38 ,  H04L12/403 ,  H04L12/52

Abstract: A scanning protocol is provided for the scanning of a plurality of the serial transmission lines (26) connecting users' devices to the scanning means (10, 16, 17) of a communication device, said lines being coupled to the scanning means through line interface couplers (LICs) (20) having each a wired address (n, n min , ...) known to the scanning means. This scanning protocol requires that for each LIC configuration, a given LICn, having a wired address n, be re-addressable with a logical address n min corresponding to the wired address of any other active LICn min , in order to determine, for said LIC configuration, the shortest possible scanning scheme including all the active LICs. The re-addressing of a LICn of wired address n, with a logical address n min , includes the steps of : - resetting the LICn to be affected a logical address n min , - setting the logical address n min into LICn; - locking said logical address n min into said LICn, and - enabling the lines (26) connected to LICn re-addressed with logical address n min .