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1. (WO1998052128) WINDOW MECHANISM FOR INFORMATION TRANSFER CONTROL FOR PCI BUS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1998/052128 International Application No.: PCT/US1998/009679
Publication Date: 19.11.1998 International Filing Date: 12.05.1998
Chapter 2 Demand Filed: 14.12.1998
IPC:
G06F 13/42 (2006.01)
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
F
ELECTRIC DIGITAL DATA PROCESSING
13
Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
38
Information transfer, e.g. on bus
42
Bus transfer protocol, e.g. handshake; Synchronisation
Applicants:
CIRRUS LOGIC, INC. [US/US]; 3100 West Warren Avenue M/S 521 Fremont, CA 94538-6419, US
Inventors:
KANEKAL, Hemanth, G.; US
Agent:
NGUYEN, Frank, D. ; Cirrus Logic, Inc. 3100 West Warren Avenue M/S 521 Fremont, CA 94538-6419, US
SHAW, Steven, A.; Cirrus Logic, Inc. 3100 West Warren Avenue M/S 521 Fremont, CA 94538-6419, US
Priority Data:
08/873,88412.05.1997US
Title (EN) WINDOW MECHANISM FOR INFORMATION TRANSFER CONTROL FOR PCI BUS
(FR) MECANISME DE FENETRE POUR COMMANDE DE TRANSFERT D'INFORMATION POUR BUS PCI
Abstract:
(EN) A method and apparatus to prevent invalid data from propagating into devices connected to a PCI tristate bus is provided. The method and apparatus utilize the PCI bus control signals to monitor the bus transaction's mode (e.g., as a bus target or as a bus master), type (e.g., read, write), and status (e.g., ongoing bus transaction). Using these information, control the opening and closing of a window gate hardware to allow valid data to propagate into a device connected to the PCI tristate bus and to prevent invalid data from propagating into the device.
(FR) L'invention concerne un procédé et un appareil qui empêchent des données invalides de se propager dans des dispositifs connectés à un bus à trois états PCI. Le procédé et l'appareil utilisent les signaux de commande du bus PCI pour surveiller le mode de transaction d'un bus (par ex. en tant que bus cible ou en tant que bus maître), le type (par ex. lecture ou écriture) et l'état (par ex. transaction du bus en cours). A l'aide de ces informations, la commande d'ouverture et de fermeture du matériel de porte de fenêtre permet à des données valides de se propager dans un dispositif connecté au bus à trois états PCI et empêche des données invalides de se propager dans le dispositif.
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Designated States: AL, AU, BA, BB, BG, BR, CA, CN, CU, CZ, EE, GE, GH, GM, GW, HU, ID, IL, IS, JP, KE, KP, KR, LC, LK, LR, LS, LT, LV, MG, MK, MN, MW, MX, NO, NZ, PL, RO, SD, SG, SI, SK, SL, TR, TT, UA, UG, UZ, VN, YU, ZW
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
KR1020010012465IL132863EP0981793JP2001526811 AU1998074824