发明名称 |
Fast turn-off slow turn-on arbitrator for reducing tri-state driver power dissipation on a shared bus |
摘要 |
A bus arbitrator for use in a shared bus system in which N bus devices request access to a shared bus. The bus arbitrator slowly activates and rapidly de-activates tristate line drivers coupled to the shared bus. The bus arbitrator comprises: 1) an input interface for receiving a first bus access request signal from a first bus device; 2) a delay circuit that receives the first bus access request signal from the input interface and generates a time-delayed first bus access request signal; and 3) a comparator circuit that receives the first bus access request signal from the input interface and the time-delayed first bus access request signal from the delay circuit and generates a line driver enable signal only if both of the first bus access request signal and the time-delayed first bus access request signal are enabled. The comparator circuit disables the line driver enable signal if either of the first bus access request signal or the time-delayed first bus access request signal is disabled.
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申请公布号 |
US7203779(B2) |
申请公布日期 |
2007.04.10 |
申请号 |
US20020060454 |
申请日期 |
2002.01.30 |
申请人 |
STMICROELECTRONICS, INC. |
发明人 |
MUROOR SRIKANTH R. |
分类号 |
G06F13/00;G06F13/362;G06F13/364;G06F13/40 |
主分类号 |
G06F13/00 |
代理机构 |
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主权项 |
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