发明名称 |
SOUND BOARD EMULATION USING DIGITAL SIGNAL PROCESSOR |
摘要 |
An improved audio-output device in which a DSP (202) operating under software control emulates a common command interface. The command interface has a set of registers that are made available to the CPU for reading and writing, even if there are no such physical registers available in the device. The audio-output device has a DSP (202) for interpreting and executing commands received from the CPU, a local memory (205) for storing data input to or output from the DSP (202), a bus-interface (BIF) (201) element for coupling the DSP (202) and memory (205) to a system bus (105), and a direct memory access (DMA) element for transferring data between the local memory (205) and the system bus (105). The local memory (205) has an emulation region for emulating a set of registers, and a communication region for transmitting messages between the local memory (205) and the system bus (105). |
申请公布号 |
WO9527243(A1) |
申请公布日期 |
1995.10.12 |
申请号 |
WO1995US03847 |
申请日期 |
1995.03.29 |
申请人 |
SIGMA DESIGNS, INC.;HSU, MARK;LE CORNEC, YANN;NGUYEN, JULIEN, TAN |
发明人 |
HSU, MARK;LE CORNEC, YANN;NGUYEN, JULIEN, TAN |
分类号 |
G06F3/16;G06F13/10;(IPC1-7):G06F3/16;G06F13/00 |
主分类号 |
G06F3/16 |
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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