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Round-robin bus protocol
   
Document Number
US Patent 7350002
Issued Date
March 25, 2008
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Abstract
A low-latency, peer-to-peer TDM bus including one or more data lines and one or more control lines is provided. Attached devices access the bus sequentially in order of their bus addresses. During a device's access period, if the device has data to transmit, the device places its address on the data lines, asserts a START signal on the bus, and proceeds to transmit data to the other devices on the bus. When the data transmission is completed, the device asserts an END signal on the bus, thus passing control of the bus to the next device in the sequence. If the device has no data to transmit, the device simply places its address on the data lines, asserts the START signal, and asserts the END signal, and control passes directly to the next device in line. In this manner, each device has an opportunity to transmit on the bus.
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Number of Claims:
28
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Owner
Agere Systems, Inc. (Allentown, PA)
Published
March 25, 2008
Application Number
11/008,745
Filed
December 9, 2004
US Classification
710/108   710/111 710/119
Int'l Classification
G06F   13/00   (20060101)  
Assistant Examiner
USPTO Field of Search
710/108   710/109   710/110   710/111   710/112   710/113   710/114   710/115   710/116   710/117   710/118   710/119   710/120   710/121   710/122   710/123   710/124   710/125  
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