CN102880274A - Standby state power management chip of electronic product - Google Patents
Standby state power management chip of electronic product Download PDFInfo
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- CN102880274A CN102880274A CN2012103220818A CN201210322081A CN102880274A CN 102880274 A CN102880274 A CN 102880274A CN 2012103220818 A CN2012103220818 A CN 2012103220818A CN 201210322081 A CN201210322081 A CN 201210322081A CN 102880274 A CN102880274 A CN 102880274A
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Abstract
The invention discloses a standby state power management chip of an electronic product. The standby state power management chip of the electronic product is provided with an encryption module, a remote control receiving module, a light emitting diode (LED) display driving module, a keyboard scanning management module, an external crystal oscillator and real-time clock module, a built-in oscillation resetting module, a power management module, a communication module and the like, wherein the clock resetting end of the built-in oscillation resetting module is connected with the clock resetting ends of the encryption module, the remote sensing receiving module, the LED display driving module, the keyboard scanning management module, the external crystal oscillator and real-time clock module, the power management module and the communication module; the communication module is connected with the encryption module, the remote sensing receiving module, the LED display driving module, the keyboard scanning management module and the power management module; the remote control receiving module is connected with the power management module; the keyboard scanning management module is connected with the LED display driving module and the power management module; and the external crystal oscillator and real-time clock module is connected with the LED display driving module and the power management module.
Description
Technical field
The present invention relates to a kind of holding state power management chip of electronic product.
Background technology
Be not the low-power consumption problem for the electronic product holding state, International Energy Agency (IEA) is initiated energy-conservation proposal in 2000 to global electric equipment products production and sales manufacturer---and " 1 watt of plan ".The existing active response that has obtained European Union and the U.S. of this plan.European Union and the U.S. have all promulgated relevant regulations, require since 2010, and all outlet ports must be reduced to below 1 watt to these its stand-by power consumptions of regional electric equipment products." Energy Star " second edition regulation that the U.S. delivers in November, 2008, the standby energy consumption of power supply adaptor must be decided according to the output power of adapter less than 0.3W or 0.5W().A plurality of countries also put into effect various regulations in succession afterwards, and these regulations have formed the new non-tariff barriers of international trade gradually.How not increase or substantially not increase in the situation of complete machine cost, solving standby low-power consumption problem, this just puts in face of us.
Summary of the invention
The holding state power management chip that the purpose of this invention is to provide a kind of electronic product.The objective of the invention is to realize by following technical solution: the holding state power management chip of described electronic product is provided with encrypting module, remote control reception module, LED driver module, keyboard scan administration module, external crystal oscillator and real-time clock module, built-in vibration reseting module, power management module, communication module etc.The clock end reset terminal of described built-in vibration reseting module links to each other with the clock end reset terminal of real-time clock module, power management module, communication module with encrypting module, remote control reception module, LED driver module, keyboard scan administration module, external crystal oscillator; Described communication module links to each other with encrypting module, remote control reception module, LED driver module, keyboard scan administration module, power management module; Described remote control reception module links to each other with power management module; Described keyboard scan administration module links to each other with LED driver module, power management module; Described external crystal oscillator links to each other with LED driver module, power management module with real-time clock module.
Described power management module is provided with comparator bank and power management registers group, described power management registers group comprises the power management registers group IRBUF that is connected with remote control reception module comparer, the power management registers group TIMINGBUF that is connected with described real-time clock module comparer, the power management registers group KEYBUF that is connected with described Keysheet module comparer, described comparator bank comprises the remote control reception module comparer that is connected with described power management registers group IRBUF, the real-time clock module comparer that is connected with described power management registers group TIMINGBUF, the Keysheet module comparer that is connected with described power management registers group KEYBUF.
Described power management module can be provided with host power supply timing wake-up circuit or the mode wake-up master power supplys such as host power supply infrared remote control wake-up circuit or host power supply button wake-up circuit (or and depositing).
Described communication module adopts two-wire system interface SDA, SCL to communicate by letter with host computer, host computer arranges order by data line SDA and clock line SCL with related system and writes chip, also can the relevant informations such as keyboard state, encrypted message, real-time time be read by SDA, SCL.
Compared with the prior art, come design electronic products with chip of the present invention, can realize that complete machine has the following advantages:
1, can adopt suitable power supply adaptor, realize that electronic product complete machine standby energy consumption less than 0.5W, satisfies countries in the world to the requirement of standby low-power consumption.
2, can the built-in encryption module, can be used for the authentication of electronic product, prevent that effectively electronic product is by people " mountain vallage ".
3, large driven current density function that the LED demonstration is built-in need not external driving pipe, simplifies and uses the peripheral applications circuit, reduces application system complete machine cost.
4, can external 32.768KHz crystal oscillator, the clock punctual timing.
5, can built-in timing function, can realize 24 hours timing start-up functions; Built-in NEC, RC-5 remote control decoding circuit can be realized NEC, RC-5 telepilot remote-controlled start-up and button power up function, and start-up mode is flexible, and is multiple functional.
6, can turn off or displaying time under the holding state, satisfy different situations.
Holding state power management chip of the present invention, chip and carry encryption function can be used for the authentication of electronic product, effectively prevent electronic product by people " mountain vallage ".Chip of the present invention adopts general CMOS technique, and is integrated easily, high finished product rate, and low cost, application circuit is simple, economical and practical, cost is low, be a new technology that market outlook are arranged very much.
Description of drawings
Fig. 1 is the circuit block diagram of holding state power management chip of the present invention.
Fig. 2 is pinout figure of the present invention.
Fig. 3 is application example circuit diagram of the present invention.
Embodiment
The present invention is further described below in conjunction with the specific embodiment of accompanying drawing.(but not being limitation of the present invention)
At first each pinout is as follows:
| Symbol | The pin title | Direction | Function declaration |
| PWRON | Power supply control output | Output | When receiving correct infrared code word, or specified button action, or timer is when satisfying condition, and the output high level can be used for the power-on switch. |
| IR | The infrared signal input | Input | External infrared digital signal input part |
| DIGx | Position output | Output | LED position driver output, Low level effective, expression DIGG1～6. |
| SDA | Data line | Two-way | The data input/output terminal of 2 line serial line interfaces.Be the interior stripping pattern formula of pulling open that is set up. |
| SCL | Clock | Input | The data clock input end of 2 line serial line interfaces, built-in pull-up resistor |
| RL0/RL1 | Keyboard state | Input | The keyboard scan input, |
| SEGx | Section driver output/key scanning output | Output | LED section driver output, high level is effective, also as key scanning output, Low level effective, SEGx represents SEG0～SEG7 |
| X1, X2 | External crystal oscillator pin | I/O | External crystal oscillator, X1 are input end, and X2 is output terminal |
| VCC | Power end | 3-5.5V | |
| GND | Earth terminal | Ground connection |
As shown in Figure 1, described electronic product holding state power management chip is provided with encrypting module, remote control reception module, LED driver module, keyboard scan administration module, external crystal oscillator and real-time clock module, built-in vibration reseting module, power management module, communication module etc.The clock end reset terminal of described built-in vibration reseting module links to each other with the clock end reset terminal of real-time clock module, power management module, communication module with encrypting module, remote control reception module, LED driver module, keyboard scan administration module, external crystal oscillator, and built-in vibration reseting module produces required clock and the reset signal of chip operation; Described communication module links to each other with encrypting module, remote control reception module, LED driver module, keyboard scan administration module, power management module, realizes writing related register group parameter or reading correlation behavior information; Described remote control reception module links to each other with power management module, can realize the remote control arousal function; Described keyboard scan administration module links to each other with LED driver module, power management module, can realize the keyboard arousal function; Described external crystal oscillator links to each other with LED driver module, power management module with real-time clock module, can realize the timing wake-up function.
Described communication module adopts two-wire system interface SDA, SCL to communicate by letter with host computer, host computer arranges order by data line SDA and clock line SCL with related system and writes chip, also can the relevant informations such as keyboard state, encrypted message, real-time time be read by SDA, SCL.Wherein data line SDA is two-way, and clock line SCL inputs for the holding state power management chip.
Described power management module is provided with comparator bank and power management registers group; Described power management registers group comprises the power management registers group IRBUF that is connected with remote control reception module comparer, the power management registers group TIMINGBUF that is connected with described real-time clock module comparer, the power management registers group KEYBUF that is connected with described Keysheet module comparer; Described comparator bank comprises the remote control reception module comparer that is connected with described power management registers group IRBUF, the real-time clock module comparer that is connected with described power management registers group TIMINGBUF, the Keysheet module comparer that is connected with described power management registers group KEYBUF.
Described power management module is provided with timing comparer, infrared remote control code word comparer, keyboard key assignments comparer.Described power management module can be provided with host power supply timing wake-up circuit or the host power supply infrared remote control wakes up or the host power supply button wakes mode wake-up master power supplys such as (or and depositing) up.Described waking up refers to host power supply from closing to the state variation of opening.
Described standby power managing chip can be controlled the Push And Release to host power supply.
Described encrypting module can be used for the electronic product authentication.
The present invention mainly is the application characteristic according to us, and deisgn product targetedly, and add some specific functions makes it to become and has our corporate identity, and cost has the product of some superiority, as:
External 32.768KHz crystal oscillator, the clock punctual timing.
Built-in timer can realize 24 hours timing start-up functions;
Built-in NEC, RC-5 remote control decoding circuit can be realized NEC, RC-5 telepilot remote-controlled start-up and button power up function, and start-up mode is flexible, and is multiple functional.
Example:
As shown in Figure 3, be the circuit diagram of a practical application example of the present invention, be provided with 5 LED in this system and show, 10 keyboards are made the 2*5 keyboard, infrared receiving terminal is arranged, and other has 4 pilot lamp, with the line of main frame 6 lines such as SDA, SCL, IR, PWRON, VDD, GND is arranged.Can realize that the start of timing start-up, button shakes the control start with infrared, can show or close displaying time under the holding state, power supply that can the gauge tap main frame is realized the purpose of standby low-power consumption.
The function of whole chip realizes by following register control.
1, system arranges order 1:SYSCTRL1
Control word: 48H
Form: 48H, { [0] [INTENS] [INTE] [SLEEP] [01] B }
SLEEP: when being 1, the SLEEP position make chip enter low-power sleep state, thus can saves energy.The chip that is in the low-power sleep state can be by any the waking up in following two kinds of events, and the first event is to detect effective button; The second event is to receive the next operational order that single-chip microcomputer sends.After chip is waken up, SLEEP position meeting automatic clear 0.
INTE: the keyboard interrupt control bit, when being 1, the INTE position allows keyboard interrupt, show to be 7 stage modes, and do not support charactron to show radix point that the SEG7 pin is used for the button interrupt output, with the equivalence of INT pin this moment; When the INTE position is 0, do not allow to interrupt, show corresponding 8 stage modes, support the radix point of charactron.
INTENS: display brightness control, 3, data 001B～111B and 000B respectively set and display driving dutycycle are 1/8～7/8 and 8/8, default value is 8/8.
2, system arranges order 2:SYSCTRL2
Control word: 4BH
Form: 4BH, { [0001] [turn_off] [dis_timer] [0] [rc5/nec] }
Rc5/nec: the form that is used for arranging remote control code is NEC or RC5; 0 is NEC, and 1 is RC5, is defaulted as NEC.
Dis_timer: whether be used for arranging displaying time.1 for showing that 0 does not show, is defaulted as not displaying time.
Turn_off: be used for switching on and shutting down control, high level is effective, carries out the shutdown action during high level. the shutdown action to this clear 0.
3, load word data command:
Control word: 68H, 69H, 6AH, 6BH, 6CH, 6DH, 6EH, 6FH
Form: control word shows data.
The output byte 1 of this order is address 68H, 69H, 6AH, 6BH, 6CH, 6DH, 6EH, 6FH, corresponds respectively to DIG0～DIG7 and draws foot-powered 8 charactrons; Output byte 2 is [DIG_DATA] B, and namely 00H is 8 digital data to the value between the 0FFH.The load word data command is used for digital data DIG_DATA is write the data register of byte 1 assigned address.For example, order data 01101010B(is the corresponding DIG2 of 6AH), 01111001B represents digital data 79H is write the 1st data register, make DIG2 draw foot-powered charactron and will show E.
4, read the key code order:
Control word: 4FH
Form: 4FH, key assignments.
Host computer is when reading in key assignments, must discharge first SDA pin (ternary output forbid or on move high level to), then chip is from SDA pin output key code, and the valid data of key code are position 7～positions 0, its meta 6 is status codes, and position 5～position 0 is scan code and button addressing.
5, the setting of enciphered message:
Control word: 4AH
Form: 4AH, and 000[C4] [C3] [C2] [C1] [C0] B }
The output byte 1 that order is set is 01001010B, i.e. 4AH; Output byte 2 is 000[C4] [C3] [C2] [C1] [C0] B.C4 ~ C0 is that cipher mode is selected.
6, reading of encrypted message:
Control word: 4DH
Form: 4DH, { [pwr_state] [0] [OUT5～0] B }, the time, minute
Pwr_state: electrification reset is 0; Behind the clock alignment, the pwr_state position is set to 1 automatically.
OUT5～0: the password of reading.
2,3 bytes of reading be the chip internal real-time time hour with minute.
7, the function during school:
Control word: 4CH
Form: 4CH, when real-time, real-time minute.
8, receive start code word: IRBUF, KEYBUF
Control word: 49H
Form: 49H, remote control code (2 or 4 bytes), key key.
Write first the content of 4BH control register, selection is NEC pattern or RC-5, determines the byte number of receiving code by this, is two bytes during RC-5; As being 4 bytes when the NEC pattern, order is address code, address code radix-minus-one complement, command code, command code radix-minus-one complement.Write first systematic code, rear write order code.
9, timing start-up is set: TIMINGBUF
Control word: 4EH
Form: 4EH in the time of regularly, regularly divides.
Claims (9)
1. the holding state power management chip of an electronic product, it is characterized in that the holding state power management chip of described electronic product is provided with encrypting module, remote control reception module, LED driver module, keyboard scan administration module, external crystal oscillator and real-time clock module, built-in vibration reseting module, power management module, communication module; The clock end reset terminal of described built-in vibration reseting module links to each other with the clock end reset terminal of real-time clock module, power management module, communication module with encrypting module, remote control reception module, LED driver module, keyboard scan administration module, external crystal oscillator; Described communication module links to each other with encrypting module, remote control reception module, LED driver module, keyboard scan administration module, power management module; Described remote control reception module links to each other with power management module; Described keyboard scan administration module links to each other with LED driver module, power management module; Described external crystal oscillator links to each other with LED driver module, power management module with real-time clock module.
2. the standby power managing chip of electronic product according to claim 1 is characterized in that, described power management module is provided with comparator bank and power management registers group; Described power management registers group comprises the power management registers group IRBUF that is connected with remote control reception module comparer, the power management registers group TIMINGBUF that is connected with described real-time clock module comparer, the power management registers group KEYBUF that is connected with described Keysheet module comparer; Described comparator bank comprises the remote control reception module comparer that is connected with described power management registers group IRBUF, the real-time clock module comparer that is connected with described power management registers group TIMINGBUF, the Keysheet module comparer that is connected with described power management registers group KEYBUF.
3. the standby power managing chip of electronic product according to claim 1 is characterized in that, described power management module comprises timing comparer, infrared remote control code word comparer, keyboard key assignments comparer; Described power management module is provided with host power supply timing wake-up circuit or host power supply infrared remote control wake-up circuit or host power supply button wake-up circuit.
4. the standby power managing chip of electronic product according to claim 3 is characterized in that, the Push And Release of described standby power managing chip main control system power supply.
5. the standby power managing chip of electronic product according to claim 1 is characterized in that, described encrypting module is used for the electronic product authentication.
6. the standby power managing chip of electronic product according to claim 1, it is characterized in that, described communication module adopts two-wire system interface SDA, SCL to communicate by letter with host computer, host computer arranges order by data line SDA and clock line SCL with related system and writes chip, or by SDA, SCL the relevant informations such as keyboard state, encrypted message, real-time time is read; Wherein data line SDA is two-way, and clock line SCL inputs for the holding state power management chip.
7. the standby power managing chip of electronic product according to claim 1 is characterized in that, the external 32.768KHz crystal oscillator of described standby power managing chip.
8. the standby power managing chip of electronic product according to claim 1 is characterized in that, described standby power managing chip built-in timer.
9. the standby power managing chip of electronic product according to claim 1 is characterized in that, the built-in NEC of described standby power managing chip, RC-5 remote control decoding circuit.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103729602A (en) * | 2013-12-18 | 2014-04-16 | 东莞市乐升电子有限公司 | System encipherment protection method using power management controller |
| CN107329919A (en) * | 2017-07-05 | 2017-11-07 | 福州福大海矽微电子有限公司 | Single line communication method and electronic equipment |
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| CN101494024A (en) * | 2009-02-11 | 2009-07-29 | 福州福大海矽微电子有限公司 | LED display drive and keyboard control chip |
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| CN202838171U (en) * | 2012-09-04 | 2013-03-27 | 福州福大海矽集成电路有限公司 | Standby state power management chip of electric products |
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| CN101252659A (en) * | 2007-02-25 | 2008-08-27 | 青岛海信电器股份有限公司 | Circuit and method for managing standby and complete machine powering of television set |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103729602A (en) * | 2013-12-18 | 2014-04-16 | 东莞市乐升电子有限公司 | System encipherment protection method using power management controller |
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| CN107329919A (en) * | 2017-07-05 | 2017-11-07 | 福州福大海矽微电子有限公司 | Single line communication method and electronic equipment |
| CN107329919B (en) * | 2017-07-05 | 2019-06-11 | 福州福大海矽微电子有限公司 | Single line communication method and electronic equipment |
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Application publication date: 20130116 |