发明名称 |
Power collapse for a wireless terminal |
摘要 |
An integrated circuit for a modem processor includes processing units that are partitioned into "always-on" and "collapsible" power domains. An always-on power domain is powered on at all times. A collapsible power domain can be powered off if the processing units in the power domain are not needed. A power control unit within an always-on power domain powers down the collapsible power domains after going into sleep and powers up these domains after waking up from sleep. Tasks for powering down the collapsible power domains may include (1) saving pertinent hardware registers for these power domains, (2) freezing output pins of the IC to minimally disturb external units, (3) clamping input pins of the collapsed power domains, (4) powering down a main oscillator and disabling the oscillator clock, and so on. Complementary tasks are performed for powering up the collapsed power domains. |
申请公布号 |
US2005064829(A1) |
申请公布日期 |
2005.03.24 |
申请号 |
US20040786585 |
申请日期 |
2004.02.24 |
申请人 |
KANG INYUP;ETHIRAJAN KARTHIKEYAN |
发明人 |
KANG INYUP;ETHIRAJAN KARTHIKEYAN |
分类号 |
H04B1/16;H04W52/02;(IPC1-7):H04Q7/20 |
主分类号 |
H04B1/16 |
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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