Title:
バスシステムおよびリトライ方法
Document Type and Number:
Japanese Patent JP4063529
Kind Code:
B2
Abstract:
A slave interface is equipped with a register that stores a retry set value SRI that is unique for a slave device and a pseudo random number generator that generates a random number value RN, and when a non-acknowledgement response is sent corresponding to a transmission request REQb from a master device, the slave interface transmits non-acknowledgement response incidental information NAINFb that includes the retry set value SRI and the random number value RN to the master interface 2 a. The master interface 2 a extracts the retry set value SRI and the random number value RN from the non-acknowledgement response incidental information NAINFb, calculates a retry interval value by adding these, and when the interval time according to the retry interval value has passes, resends the transmission request REQb to the slave device. Since the retry interval time is independently set every time, live-lock may be prevented.
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Inventors:
Kenichiro Ansei
Jun Okamura
Jun Okamura
Application Number:
JP2001362855A
Publication Date:
March 19, 2008
Filing Date:
November 28, 2001
Export Citation:
Assignee:
NEC Electronics Corporation
International Classes:
G06F13/36; G06F13/00; H04L1/18; H04L12/403; H04L29/08
Domestic Patent References:
| JP1161562A | ||||
| JP2000250850A |
Attorney, Agent or Firm:
Mitsuhiro Hamada