发明名称 |
Data processor and graphic data processing device |
摘要 |
An object of the present invention is to improve efficiency of transfer of control information, graphic data, and the like for drawing and display control in a graphic data processor. A graphic data processor includes: a CPU; a first bus coupled to the CPU; a DMAC for controlling a data transfer using the first bus; a bus bridge circuit for transmitting/receiving data to/from the first bus; a three-dimensional graphics module for receiving a command from the CPU via the first bus and performing a three-dimensional graphic process; a second bus coupled to the bus bridge circuit and a plurality of first circuit modules; a third bus coupled to the bus bridge circuit and second circuit modules; and a memory interface circuit coupled to the first and second buses and the three-dimensional graphic module and connectable to an external memory, wherein the bus bridge circuit can control a direct memory access transfer between an external circuit and the second bus.
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申请公布号 |
US7446775(B2) |
申请公布日期 |
2008.11.04 |
申请号 |
US20040891047 |
申请日期 |
2004.07.15 |
申请人 |
RENESAS TECHNOLOGY CORP. |
发明人 |
HARA HIROTAKA;HAMASAKI HIROYUKI;SAEKI MITSUHIRO;HIRADE KAZUHIRO;TAKANO MAKOTO |
分类号 |
G06F13/14;G06F13/28;G06F13/36;G06F15/78;G06T1/20;G06T11/20;G06T11/40;G06T15/00 |
主分类号 |
G06F13/14 |
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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