发明名称 |
HIGH AND LOW SPEED DIFFERENTIAL BUS DRIVER IN A COMMUNICATION BUS SYSTEM |
摘要 |
<p>A communication bus system comprises a pair of conductors for carrying differential bus signals. A first and second station are connected by the pair of conductors. The system is operable in a selectable one of at least a low speed mode and a high-speed mode. The second station contains resistors each in series with a switch between the pair of conductors and a common node. The impedance connection circuit connects common node to the pair of conductors in the high-speed mode. The resistors provide an impedance to the pair of conductors that substantially matches the transmission line impedance of the pair of conductors. The common point is kept at a bias potential that differs from the reference potential of the receiving circuit. Preferably, a third switch is included between the nodes that join the resistors to the switches. This third switch is switched on and off together with the other switches.</p> |
申请公布号 |
EP1090354(A2) |
申请公布日期 |
2001.04.11 |
申请号 |
EP20000907471 |
申请日期 |
2000.01.13 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
KOLE, MARCUS, E. |
分类号 |
G06F13/40;(IPC1-7):G06F13/40 |
主分类号 |
G06F13/40 |
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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