CN101442332A - Intelligent mobile phone and restarting method thereof - Google Patents

Abstract

The invention discloses an intelligent mobile phone and a restarting method thereof. Through adding a simple and universal triode, the intelligent mobile phone can solve the problem when a system is restarted. The intelligent mobile phone and the method have the advantage of lowering cost of products, and the method is stable and reliable, and meets market demands.

Description

A kind of smart mobile phone and method for restarting thereof

Technical field

The present invention relates to communication product, refer in particular to method for restarting smart mobile phone.

Background technology

Because WorldCom's industry is in the ascendant, and smart mobile phone more and more is subjected to liking of consumer, and Widows Mobile smart mobile phone generally has a RESET button, when mobile phone was unusual, the user can be restarted by this button, and does not need the plug battery at present.

As shown in Figure 1, be Qualcomm MSM6280+Marvell PXA270 platform intelligent mobile phone power-on theory diagram; As shown in Figure 2, be Qualcomm MSM6280+Marvell PXA270 platform intelligent mobile phone shutdown theory diagram; This platform has two CPU, and wherein Qualcomm CPU is a main equipment, and Marvell CPU is a slave unit.

During start, button detects by Qualcomm PMU and carries out, and opens Qualcomm part (PS_HOLD puts height) earlier, is partly opened by Qualcomm output PDA_POWERON and PDA_RESET signal controlling Marvell again.

During shutdown, button detects by Marvell and carries out, and affirmation needs do certain consistency operation after the shutdown, and the mailbox notice Qualcomm by dual port RAM shuts down again.Qualcomm output PDA_POWERON and PDA_RESET signal controlling Marvell partly shut down.QualcommCPU will carry out shutdown process, close watchdog (house dog), and last PS_HOLD puts low, realize that Qualcomm partly shuts down.

(crash when using) when mobile phone is unusual, might be that Qualcomm partly goes wrong, also may be that Marvell partly goes wrong, have only one to restart input port (RESIN_N) so need restart .Qualcomm CPU to whole system, if RESET_KEY is directly connected to this input port, when RESET_KEY pressed, all GPIO of Qualcomm CPU were high-impedance state.Wherein will to cause PS_HOLD to put low for the GPIO42 high resistant.Qualcomm PMU PS_HOLD has the low level timer, and the about 0.2s of the timing of this timer, timer expiry can cause Qualcomm PMU to shut down by force.And the manual button of user is easy to surpass the time of this timer. therefore need design especially restarting part.

In the market, have by increase by one in button output place and restart the scheme that chip U1 (as: MAX6467XS, shown in Figure 3) controls input Qualcomm RESIN_N low level pulse width.But this scheme cost is very high, and repeatedly continuous fast reset signal can be by Qualcomm PMU (Power Management Unit power management module) as the signal that once is higher than 200ms, make Qualcomm PMU shut down, still there is overtime risk in this scheme, cost is very high simultaneously, and each chip needs 3 U.S. dollars approximately.

Summary of the invention

For solving the timeout issue that when restarting, occurs, the present invention proposes a solution, utilizes existing technology, just increases a general triode on the hardware, control timeout issue in the time of to solve restarting of occurring in the prior art easily simultaneously by software.

The invention provides a kind of smart mobile phone, it is characterized in that: the GPIO (53) of triode Q2 base stage and Marvell PXA270CPU is connected, the direct ground connection of collector electrode, emitter is by resistance R 3 and power supply VREG_WSWP series connection, be connected with the RESIN_N of Qualcomm MSM6280 CPU simultaneously, the KPON_RST_N pin by diode D2 and Qualcomm PMU6550 is connected simultaneously.。

The invention provides a kind of method that realizes that smart mobile phone is restarted, the steps include:

The GPIO of GP configuring IO (1) is restarted function;

Press the Reset_Key1 key when unusual, Marvell is restarted;

The antenna ground pin is connected over the ground into a LC condenser network.

Whether GPIO restarts,

If do not restart, Marvell normally starts;

GPIO has been restarted, and provides Qualcomm by GPIO (53) and restarts desired signal;

Qualcomm CPU is restarted;

Qualcomm dui Marvell carries out hardware restarts;

Whole system is restarted.

Beneficial effect of the present invention is the triode by a simple general-purpose, control in conjunction with software and just can solve problem overtime when restarting, each triode is as long as about 5 fens of RMB, greatly reduce product cost simultaneously, and this method is reliable and stable, meets the need of market.

Description of drawings

Fig. 1 is a Qualcomm MSM6280+Marvell PXA270 platform intelligent mobile phone power-on circuit diagram;

Fig. 2 is a Qualcomm MSM6280+Marvell PXA270 platform intelligent mobile phone shutdown circuit diagram;

Fig. 3 adopts the circuit diagram of restarting chip U1 (MAX6467XS);

Fig. 4 is that Qualcomm MSM6280+Marvell PXA270 platform intelligent mobile phone is restarted circuit diagram;

In Fig. 1-4 1. 2. 3. 4. the expression be its sequential;

Fig. 5 is the software flow pattern that Qualcomm MSM6280+Marvell PXA270 platform intelligent mobile phone is restarted function.

Embodiment

Be better explanation the present invention, the present invention is further illustrated below by specific embodiment.

Marvell GPIO＜1〉have a GPIO Reset function.At the bootloader of Marvell (one section small routine before operating system, carrying out, by this section small routine, can initiating hardware equipment, set up the mapping table of memory headroom, thereby set up suitable system hardware and software environment, for final call operation system kernel ready) in enable GPIO＜1 GPIO Reset function, unusual when occurring, when the user presses RESET_KEY, Marvell is restarted, and restarts the back and judges to be GPIO Reset.If GPIO is Reset, GPIO＜53 can be set〉pulsewidth of output restarts Qualcomm less than the low pulse of 200ms by Q2.If not GPIO Reset, Marvell normally starts.GPIO＜53 wherein〉also can use other rebooting status down and all be low level GPIO during switching on and shutting down.After Qualcomm finishes and restarts, by PDA_RESET Marvell part hardware is restarted again.Thereby the realization whole system is restarted work.

As accompanying drawing 1, Fig. 2 and shown in Figure 4 only needs to increase a very general triode Q2 (as: DTC144EM) and just can finish the work that whole system is restarted.

As shown in Figure 1, the GPIO (53) of triode Q2 base stage and Marvell PXA270 CPU is connected, the direct ground connection of collector electrode, emitter is by resistance R 3 and power supply VREG_WSWP series connection, be connected with the RESIN_N of Qualcomm MSM6280 CPU simultaneously, the KPON_RST_N pin by diode D2 and QualcommPMU6550 is connected simultaneously.

During start, its sequential chart as shown in Figure 1,1. → 2. → 3. → 4.;

During shutdown, its sequential chart as shown in Figure 2,1. → 2. → 3.

When restarting, its sequential chart as shown in Figure 4,1. → 2. → 3.

The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (2)

1, a kind of smart mobile phone is characterized in that:

The GPIO (53) of triode Q2 base stage and Marvell PXA270 CPU is connected, the direct ground connection of collector electrode, emitter is by resistance R 3 and power supply VREG_WSWP series connection, be connected with the RESIN_N of QualcommMSM6280 CPU simultaneously, the KPON_RST_N pin by diode D2 and Qualcomm PMU6550 is connected simultaneously.

2, a kind of method that realizes that smart mobile phone is restarted the steps include:

The GPIO of GP configuring IO (1) is restarted function;

Press Reset Key1 key when unusual, Marvell is restarted;

The antenna ground pin is connected over the ground into a LC condenser network.

Whether GPIO restarts,

If do not restart, Marvell normally starts;

GPIO has been restarted, and provides Qualcomm by GPIO (53) and restarts desired signal;

Qualcomm CPU is restarted;

Qualcomm dui Marvell carries out hardware restarts;

Whole system is restarted.

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