Title:
METHOD TO OPERATE AUTONOMOUSLY PCI SERIAL BUS INTERFACE DEVICE CIRCUIT OF PACKET PROCESSING DATA COMMUNICATION INTERFACE DEVICE AND AUTONOMOUS BOOT CIRCUIT
Document Type and Number:
Japanese Patent JP3967792
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To attain autonomous DMA operation for a data packet device by transferring data to at least one program control list to operate a data packet transfer device in the autonomous mode.
SOLUTION: While an automatic boot input 370 is in operation, an automatic boot mode is selected, a DMA channel 0 is in use to operate autonomously a PCI interface ASIC 20 such as fetch of an address of a first packet control list and access of a DMA master to an internal link register. The selected automatic boot mode and an external ROM are used to act the PCI interface ASIC 20 like a local processing unit so as to set up a register of all internal PCI interface ASIC 20 and to initialize other function on the PCI bus 24. Then a plurality of other PCLs are built up and linked. Various DMA channels execute the PCL to allow data transfer on an IEEE 1394 bus.
Inventors:
Richard T. Baker
Application Number:
JP11112797A
Publication Date:
August 29, 2007
Filing Date:
April 28, 1997
Export Citation:
Assignee:
Texas Instruments Incorporated
International Classes:
G06F15/16; H04L12/28; G06F15/163; G06F15/177; H04L12/40; H04L12/56; (IPC1-7): H04L12/40; G06F15/163; H04L12/56
Domestic Patent References:
| JP8106429A |
Attorney, Agent or Firm:
Hideto Asamura
Hajime Asamura
Hayashi Zouzo
Kuniaki Shimizu
Hajime Asamura
Hayashi Zouzo
Kuniaki Shimizu
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