Bus system having both serial and parallel busses

Details Bus system having both serial and parallel busses Bus system having both serial and parallel busses

1997-11-24

1999-09-14

Ray, Gopal C.

Electrical computers and digital data processing systems: input/

Intrasystem connection

Bus access regulation

710129, G06F 1338, G06F 1340

Patent

active

059516666

ABSTRACT:
The bus system (2) for the transfer of data within a master-slave system (1) comprises a parallel data bus (3) and a serial data bus (4, 5), as well as at least one control line (15, 16) for a control signal (SnP, RnW) determining the manner of transfer, wherein each slave (S.sub.1 . . . n) can be connected to a data bus (3; 4, 5) corresponding to its interface (SIF.sub.p, SIF.sub.S) and can be controlled with respect to the manner of transfer. Upon the transfer of both serial data (SD) and parallel data (PD) with the addressing of the or each slave (Sn), a first control signal (serial, not parallel) for the type of transfer is set before a strobe signal (STRB) for the transfer of data is activated. For the determining of a write or read access, a further control signal (RnW) for the direction of transfer (read, not write) is set.

REFERENCES:
patent: 4728930 (1988-03-01), Grote et al.
patent: 5475818 (1995-12-01), Molyneaux et al.
patent: 5596724 (1997-01-01), Mullins et al.
patent: 5649124 (1997-07-01), Kreidl
patent: 5742844 (1998-04-01), Feldman

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