发明名称 |
Data transfer control device, electronic equipment, and power supply switching method |
摘要 |
A state controller of a data transfer processing circuit switches an operation of an A-device or a B-device between a host operation and a peripheral operation by state transition. A power supply switch circuit connects a power supply circuit with a VBUS line based on transition of the state controller. A power supply switching circuit of a power supply control circuit connects the VBUS line or the power supply circuit with the data transfer processing circuit based on a switching signal. The switching signal is generated based on an output signal of a switch circuit or a control signal from the state controller.
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申请公布号 |
US2004042138(A1) |
申请公布日期 |
2004.03.04 |
申请号 |
US20030379592 |
申请日期 |
2003.03.06 |
申请人 |
SEIKO EPSON CORPORATION |
发明人 |
SAITO NOBUYUKI;OSHITA SHUN;NAGAO KENYOU |
分类号 |
G06F1/26;G06F1/32;G06F3/00;G06F13/38;(IPC1-7):H02H3/20 |
主分类号 |
G06F1/26 |
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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