CN101355764B - Apparatus and method for providing variable power supply to multi-card in a mobile terminal - Google Patents
Apparatus and method for providing variable power supply to multi-card in a mobile terminal Download PDFInfo
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- CN101355764B CN101355764B CN2008101495909A CN200810149590A CN101355764B CN 101355764 B CN101355764 B CN 101355764B CN 2008101495909 A CN2008101495909 A CN 2008101495909A CN 200810149590 A CN200810149590 A CN 200810149590A CN 101355764 B CN101355764 B CN 101355764B
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- portable terminal
- dbb
- pmic
- card
- power supply
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Abstract
The invention discloses a device for providing a variable power supply for multiple cards in a mobile terminal, comprising a power supply management chip PMIC, a digital baseband chip DBB and at least one mobile terminal card, wherein the PMIC is provided with at least one output power supply; the DBB is provided with at least one card interface; the output power supply provides electricity for the DBB, each card interface and each mobile terminal card; the mobile terminal card is connected to the DBB through the card interface; after electrification of the PMIC is completed, the DBB sets the output of the power supply of the PMIC through a control wire. The invention also discloses a method for providing the variable power supply for the multiple cards in the mobile terminal. The device and the method can reduce the area of a mobile phone PCB, and reduce electricity consumption.
Description
Technical field
The present invention relates to the power supply technique in a kind of portable terminal, specifically, relate in a kind of portable terminal the devices and methods therefor that variable power supply is provided to many cards.
Background technology
4G in 2G/3G/ and the research and development, and multimode, being applied in the near future of treating more, block more are about to realize.At present, 2G has powerful overlay network, and 3G is about to widespread adoption, not only supports the 2G network while but also support the portable terminal of 3G network to arise at the historic moment.Simultaneously; Supported in the past that the mobile phone of two cards was to need external power supply conversion chip (level-shift) to carry out level under all adaptive situation of 1.8V and 3.0V to change automatically at supply power voltage; Not only increase the area of mobile phone printed circuit board (PCB) (PCB), and increased the loss of power.
Summary of the invention
The technical problem that the present invention will solve provides in a kind of portable terminal the device that variable power supply is provided to many cards, can reduce the area of mobile phone PCB, reduces power consumption.
In order to address the above problem; The invention provides in a kind of portable terminal the device that variable power supply is provided to many cards, comprising: power management chip PMIC and digital baseband chip DBB, and at least one portable terminal card; Said PMIC is provided with at least one road out-put supply; Said DBB is provided with at least one card, and said out-put supply offers said DBB, each card and each portable terminal card, and said portable terminal cartoon is crossed said card and is connected to said DBB; After said PMIC powers on and accomplishes; Said DBB sets the power supply output of said PMIC through control line; When the operating voltage of output of the power supply of said PMIC and said portable terminal card was not inconsistent, said portable terminal cartoon was crossed data wire the situation that said operating voltage and output voltage are not inconsistent is fed back to said DBB; Said DBB adjusts the output voltage of said PMIC through control line, conforms to the operating voltage of said portable terminal card up to the output voltage of said PMIC.
Preferably, said control line adopts the Serial Peripheral Interface spi bus, and said DBB sets the power supply output of said PMIC through said spi bus.
Preferably, when said DBB sets the output voltage of said PMIC through said spi bus, low-voltage in the elder generation.
Preferably; The clock line of said portable terminal card, data wire and reset line are connected with said card; When the output voltage of the operating voltage of said portable terminal card and said PMIC was not inconsistent, said portable terminal cartoon was crossed said data wire the situation that said operating voltage and output voltage are not inconsistent is fed back to said DBB; Said DBB adjusts the output voltage of said PMIC through said spi bus, conforms to the operating voltage of said portable terminal card up to the output voltage of said PMIC.
Preferably, said card is universal input/output interface GPIO.
Preferably, in said DBB, the kernel portion of each portable terminal card adopts same module for power supply, and said card is arranged to universal input/output interface GPIO form.
The technical problem that the present invention will solve provides in a kind of portable terminal the method that variable power supply is provided to many cards, can reduce the area of mobile phone PCB, reduces power consumption.
In order to address the above problem, the invention provides in a kind of portable terminal the method that variable power supply is provided to many cards, comprising:
After power management chip PMIC powered on completion, digital baseband chip DBB exported through the power supply that control line is set said PMIC, and out-put supply offers said DBB, each card and each portable terminal card;
When the operating voltage of output of the power supply of said PMIC and said portable terminal card was not inconsistent, said portable terminal cartoon was crossed data wire the situation that said operating voltage and output voltage are not inconsistent is fed back to said DBB;
Said DBB adjusts the output voltage of said PMIC through control line, conforms to the operating voltage of said portable terminal card up to the output voltage of said PMIC.
Further, said control line adopts the Serial Peripheral Interface spi bus, and said DBB sets the power supply output of said PMIC through said spi bus.
Further, when said DBB sets the output voltage of said PMIC through said spi bus, low-voltage in the elder generation.
Further, the clock line of said portable terminal card, data wire and reset line are connected with said card, and said portable terminal cartoon is crossed said data wire the situation that said operating voltage and output voltage are not inconsistent is fed back to said DBB; Said DBB adjusts the output voltage of said PMIC through said spi bus, conforms to the operating voltage of said portable terminal card up to the output voltage of said PMIC.
This method can be saved and add level-shift, thereby reduces the area of mobile phone PCB, reduces power consumption, practices thrift cost simultaneously.
Description of drawings
Fig. 1 is the circuit diagram that portable terminal provides variable power supply among the present invention to many cards;
Card1_CLK: the clock of first card;
Cardn_CLK: N opens the clock of card;
Card1_RST: the resetting of first card;
Cardn_RST: N opens resetting of card;
Card1_IO: the data input and output of first card;
Cardn_IO: N opens the data input and output of card;
Card1_VDDPST: first card power supply;
Cardn_VDDPST: n opens the card power supply;
PMIC: power management chip;
DBB: digital baseband chip.
Embodiment
Technology of the present invention need not add level-shift also can provide multiple variable power supply, thereby supports the mobile phone of the many cards of multi-mode and multi-standby, can various power voltage be provided for many cards.
As shown in Figure 1; The circuit diagram of variable power supply is provided to many cards for portable terminal among the present invention; Power management chip (PMIC) has adjustable multiple power supplies output, representes to cardn_VDDPST (n opens the output of card power supply) with card1_VDDPST (output of first card power supply); Digital baseband chip (DBB) is provided with a plurality of card (card interface), uses card1 interface (first card) to represent to cardn interface (n opens card) respectively.
Card1_VDDPST drives the power supply of (post-driver) part for respectively the I/O output of card1 interface in card1 (first card) and the digital baseband chip (DBB); Card1_vdd (its power supply also is to come from pmic, but this can share with the pre-driver of DBB) gives I/O internal drive (pre-driver) and the power supply of DBB core (DBB core) part of card1 interface in the DBB chip respectively; Card1_VSS (the kernel ground of card 1) and DBB core adopt on the same group.More than, card2 to cardn adopts the same manner.Card1_VSSPST (card 1 interface ground) can adopt ground wire on the same group to cardn_VSSPST.Finally, realize that a DBB can support many cards, simultaneously, need not to add level-shift self-adjusting supply power voltage, thereby make the terminal realize supporting many cards of different voltages.The Card1_CLK of card1 (clock of first card), Card1_IO (the data input and output of first card) are connected with card1 interface respectively with Card1_RST (resetting of first card).
In a DBB; The kernel portion of card1 to cardn can adopt same module for power supply (because the kernel portion of these cards all is to link to each other with the kernel of DBB; All can adopt power supply power supply on the same group with the DBB kernel); Just card (card interface) needs many groups, and each card is arranged to optional universal input/output interface (GPIO, general purpose input output) form simultaneously; The card that does not have like this to use then can be selected to use as universal input/output interface, makes the interface resource maximum useization.
After the mobile phone power-on key was pressed, PMIC began to power on, and after the completion that powers on, DBB sets the card1_VDDPST magnitude of voltage through Serial Peripheral Interface (SPI, serial peripheralinterface) bus, was provided with usually at present and went up low-voltage earlier.If this voltage and card1 operating voltage are not inconsistent; Then card1 can feed back to DBB through data wire (adopting card1_IO); Notice DBB adjusts the corresponding register of the inner LDO of PMIC through spi bus, thereby changes output voltage, conforms to the card1 operating voltage up to the PMIC output voltage; In like manner, said method is also adopted in the adjustment of card_2VDDPST to cardn_VDDPST voltage.
In addition; The voltage that DBB changes PMIC output card1_VDDPST also can not pass through spi bus; But adjust through this control pin (control pin) of Vcard1_control (control signal wire of card 1); In like manner, the adjustment of card2_VDDPST to cardn_VDDPST voltage also can be adopted this method.
Claims (10)
1. the device of variable power supply is provided to many cards in the portable terminal; Comprise: power management chip PMIC and digital baseband chip DBB, and at least one portable terminal card is characterized in that; Said PMIC is provided with at least one road out-put supply; Said DBB is provided with at least one card, and said out-put supply offers said DBB, each card and each portable terminal card, and said portable terminal cartoon is crossed said card and is connected to said DBB; After said PMIC powers on and accomplishes; Said DBB sets the power supply output of said PMIC through control line; When the operating voltage of output of the power supply of said PMIC and said portable terminal card was not inconsistent, said portable terminal cartoon was crossed data wire the situation that said operating voltage and output voltage are not inconsistent is fed back to said DBB; Said DBB adjusts the output voltage of said PMIC through control line, conforms to the operating voltage of said portable terminal card up to the output voltage of said PMIC.
2. the device of variable power supply is provided to many cards in the portable terminal as claimed in claim 1, it is characterized in that, said control line adopts the Serial Peripheral Interface spi bus, and said DBB sets the power supply output of said PMIC through said spi bus.
3. the device of variable power supply is provided to many cards in the portable terminal as claimed in claim 2, it is characterized in that, when said DBB sets the output voltage of said PMIC through said spi bus, low-voltage in the elder generation.
4. the device of variable power supply is provided to many cards in the portable terminal as claimed in claim 3; It is characterized in that; The clock line of said portable terminal card, data wire and reset line are connected with said card; When the output voltage of the operating voltage of said portable terminal card and said PMIC was not inconsistent, said portable terminal cartoon was crossed said data wire the situation that said operating voltage and output voltage are not inconsistent is fed back to said DBB; Said DBB adjusts the output voltage of said PMIC through said spi bus, conforms to the operating voltage of said portable terminal card up to the output voltage of said PMIC.
5. the device of variable power supply is provided to many cards in the portable terminal as claimed in claim 1, it is characterized in that said card is a universal input/output interface.
6. the device of variable power supply is provided to many cards in the portable terminal as claimed in claim 1; It is characterized in that; In said DBB, the kernel portion of each portable terminal card adopts same module for power supply, and said card is arranged to universal input/output interface GPIO form.
7. the method for variable power supply is provided to many cards in the portable terminal, it is characterized in that, comprising:
After power management chip PMIC powered on completion, digital baseband chip DBB exported through the power supply that control line is set said PMIC, and out-put supply offers said DBB, each card and each portable terminal card;
When the operating voltage of output of the power supply of said PMIC and said portable terminal card was not inconsistent, said portable terminal cartoon was crossed data wire the situation that said operating voltage and output voltage are not inconsistent is fed back to said DBB;
Said DBB adjusts the output voltage of said PMIC through control line, conforms to the operating voltage of said portable terminal card up to the output voltage of said PMIC.
8. the method for variable power supply is provided to many cards in the portable terminal according to claim 7, it is characterized in that, said control line adopts the Serial Peripheral Interface spi bus, and said DBB sets the power supply output of said PMIC through said spi bus.
9. the method for variable power supply is provided to many cards in the portable terminal according to claim 8, it is characterized in that, when said DBB sets the output voltage of said PMIC through said spi bus, low-voltage in the elder generation.
10. the method for variable power supply is provided to many cards in the portable terminal according to claim 9; It is characterized in that; The clock line of said portable terminal card, data wire and reset line are connected with said card, and said portable terminal cartoon is crossed said data wire the situation that said operating voltage and output voltage are not inconsistent is fed back to said DBB; Said DBB adjusts the output voltage of said PMIC through said spi bus, conforms to the operating voltage of said portable terminal card up to the output voltage of said PMIC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101495909A CN101355764B (en) | 2008-09-12 | 2008-09-12 | Apparatus and method for providing variable power supply to multi-card in a mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101495909A CN101355764B (en) | 2008-09-12 | 2008-09-12 | Apparatus and method for providing variable power supply to multi-card in a mobile terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101355764A CN101355764A (en) | 2009-01-28 |
| CN101355764B true CN101355764B (en) | 2012-07-18 |
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| CN2008101495909A Expired - Fee Related CN101355764B (en) | 2008-09-12 | 2008-09-12 | Apparatus and method for providing variable power supply to multi-card in a mobile terminal |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102118516A (en) * | 2011-01-13 | 2011-07-06 | 中兴通讯股份有限公司 | Control method and system for output voltage of power management chip |
| CN110223635B (en) * | 2019-06-14 | 2021-10-01 | 京东方科技集团股份有限公司 | Power supply control circuit, power supply control method and display device |
| CN115296530A (en) * | 2022-07-25 | 2022-11-04 | 圣邦微电子（北京）股份有限公司 | Power management chip |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6813340B1 (en) * | 2000-11-28 | 2004-11-02 | Cisco Technology, Inc. | Ringing SLIC fault handling |
| CN1761346A (en) * | 2004-08-26 | 2006-04-19 | 三星电子株式会社 | Method of multi-interfacing between smart card and the storage card and multi-interface card |
| CN1928779A (en) * | 2005-09-05 | 2007-03-14 | 中兴通讯股份有限公司 | Interface device for SIM card and USIM card |
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2008
- 2008-09-12 CN CN2008101495909A patent/CN101355764B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6813340B1 (en) * | 2000-11-28 | 2004-11-02 | Cisco Technology, Inc. | Ringing SLIC fault handling |
| CN1761346A (en) * | 2004-08-26 | 2006-04-19 | 三星电子株式会社 | Method of multi-interfacing between smart card and the storage card and multi-interface card |
| CN1928779A (en) * | 2005-09-05 | 2007-03-14 | 中兴通讯股份有限公司 | Interface device for SIM card and USIM card |
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| CN101355764A (en) | 2009-01-28 |
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Application publication date: 20090128 Assignee: SHENZHEN ZTE MICROELECTRONICS TECHNOLOGY CO., LTD. Assignor: ZTE Corporation Contract record no.: 2015440020319 Denomination of invention: Apparatus and method for providing variable power supply to multi-card in a mobile terminal Granted publication date: 20120718 License type: Common License Record date: 20151123 |
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Granted publication date: 20120718 Termination date: 20160912 |