发明名称 |
Coprocessor responsive to user-defined commands, and data processing systems including same |
摘要 |
A disclosed coprocessor receives a user-defined command during execution of an instruction including the user-defined command, and performs a predetermined function in response to the user-defined command. The user-defined command includes multiple ordered bits having values assigned by a user. In one embodiment, the coprocessor includes logic coupled to receive the user-defined command and a datapath. The logic produces a control value in response to the user-defined command. The datapath receives data and the control value, and performs the predetermined function dependent upon the control value. In one embodiment, the predetermined function is a motion estimation function. Data processing systems are described including a processor coupled to the coprocessor. Another disclosed data processing system includes an arbiter coupled between a processor and multiple coprocessors. The arbiter receives the user-defined command, and provides the user-defined command to one of the coprocessors dependent upon the user-defined command.
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申请公布号 |
US2004227763(A1) |
申请公布日期 |
2004.11.18 |
申请号 |
US20030437485 |
申请日期 |
2003.05.14 |
申请人 |
WICHMAN SHANNON A.;TROMBETTA RAMON C.;CHIANG YETUNG P. |
发明人 |
WICHMAN SHANNON A.;TROMBETTA RAMON C.;CHIANG YETUNG P. |
分类号 |
G06F15/16;H04N5/14;H04N7/26;(IPC1-7):G06F15/16 |
主分类号 |
G06F15/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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