200917006 ^936twf.doc/n 九、發明說明： 【發明所屬之技術領域】 #本發明是有關於-種符合先進架構電源介面的 吕理衣置，且特別是有關於—種可完全切斷沔 的電源管理裝置與其方法。 【先前技術】 、電源管理是一般桌上型電腦與依賴電池供應電力之可 穩式周邊設備（例如筆記型電腦）的1重要功能，如何 能夠針對電腦^件及周歧備的運作狀況，有效調降非使 用=設備的用電量，進喊高電減収率、延長電池使 用哥命’對於電源管理來說尤其關鍵。 ϋ 傳統的電腦採用了高階電源管理（Advanced p〇wer Management，APM)規格，此規格是由美國微軟（Mi_〇ft ) 公司與英特爾（Intel)公司為監視器（M〇nit〇r)所開發的 應用程式設計介面，其可保存個人電腦與具有特殊電池之 監視器間的電力供應。但APM的主要問題在於其是由基 本輪入輸出系統（Basic Input/Output System, BIOS)的韌 體（firmware)所主導控制，無法隨著作業程序的變遷而 有效地運用調整電力，只能經由中斷要求（Inten>upt Request，IRQ )和輸入輸出埠（Input/〇帅也 p〇rt, I/〇 p〇rt) 來臆測使者的活動，目此無法滿足節約電源，以及延長 可攜式設備之電池壽命的需求。 為了讓作業系統和硬體之間保有一個共同的電源管理 介面’目前則發展出一種先進架構電源介面（Advanced 200917006 -阳 6twf. doc/n200917006 ^936twf.doc/n IX. Description of the invention: [Technical field to which the invention pertains] # The present invention relates to a device that conforms to an advanced architecture power interface, and particularly relates to a type that can completely cut off a crucible. Power management device and its method. [Prior Art] Power management is an important function of a general desktop computer and a stable peripheral device (such as a notebook computer) that relies on battery power supply. How can it be effectively reduced for the operation of computer components and peripherals? Non-use = power consumption of the device, high power depreciation, and extended battery life are especially critical for power management. ϋ Traditional computers use the Advanced P〇wer Management (APM) specification, which is used by Microsoft (Mi_〇ft) and Intel (Intel) as monitors (M〇nit〇r). Developed an application programming interface that conserves power between a personal computer and a monitor with a special battery. However, the main problem of APM is that it is controlled by the firmware of the Basic Input/Output System (BIOS). It cannot be effectively used to adjust the power according to the changes of the writing process. Interrupt requirements (Inten>upt Request, IRQ) and input/output ports (Input/〇, also p〇rt, I/〇p〇rt) to detect the messenger's activities, thus failing to meet the power saving and extending the portable device The need for battery life. In order to maintain a common power management interface between the operating system and the hardware, an advanced architecture power interface has been developed (Advanced 200917006 - Yang 6twf. doc/n
Configuration and Power Interface，ACPI)標準，其係根據 使用者與作業系統之間的互動，而以作業系統取代基本輸 入輸出系統(Basic Input/Output System, BIOS)來下指令管 ，電源，因此可以增加電源管理之效率。意即當作業系統 察p到現在電腦的某部分功能沒有使用，便會自動降低其 功能以減少用電’以儲備更多電力。先進架構電源介面能 夠將電源有效地分配傳送至系統元件，搭配硬體偵測主機 〇 板，度、風扇轉速和電源供應器（Power Supply)的電壓 等育訊，進而提供適當的電源與主機工作頻率，來達到 電與效率並存的目標。 在ACn電源管理下，為了降低電源的消耗，大部份 的裝置都支援在不工作的狀況下進入較低耗電量的 Suspend m〇de(Dl〜D3 State)以節約電力的消耗。但為了 支棱Wake up的功能’這些裝置並沒有完全切掉所有的 電力消耗，只是降低電力的消耗而已。這些所有裝置的 總電力消耗對KBatteryLife的影響也不小，也是個負 ◎ 擔。如果可以將這些電力消耗也節省下來，應該對整體 Battery Life的改善是有所幫助的。 【發明内容】 本發明提供一種電源管理裝置，配合BI〇s與嵌入式 控制器(Embedded Controller) ’讓使用者經由應用程式的^ 面或者手動關掉周邊裝置的電力。 本發明提中一種電源管理方法，利用原本的先進挺熊 及電源介面之架構，讓系統可以完全切斷周邊裝置的g 200917006 936twf.doc/n 源，以降低不必要的功率消耗。 承上述，本發明提出一種電源管理裝置，μ 系統中，並用於控_邊裝置的電源，上=於主機 包括電源切換料料人式控制器。電源切換=理裳置 閉周邊裝置的電源並受控純人式 & =用以啟 周邊裝置執行省雷槿弋0士 ^ λ 田主機系統對 ι轨仃·^私棋式牯，肷入式控制器經由 元，切斷周邊裝置的電源。 包源控制單Configuration and Power Interface (ACPI) standard, which is based on the interaction between the user and the operating system, and replaces the basic input/output system (BIOS) with the operating system to control the tube and power supply. The efficiency of power management. This means that when the operating system checks that some part of the computer's functions are not being used, it will automatically reduce its function to reduce power consumption to reserve more power. The advanced architecture power interface delivers power to the system components efficiently, with hardware detection of the motherboard's board, degree, fan speed, and power supply voltage to provide proper power and host operation. Frequency, to achieve the goal of coexistence of electricity and efficiency. Under ACn power management, in order to reduce the power consumption, most devices support the Suspend m〇de (Dl ~ D3 State) to save power when not working. But for the function of Wake up, these devices do not completely cut off all power consumption, but only reduce the power consumption. The total power consumption of all these devices has a significant impact on KBatteryLife and is also a negative burden. If you can save these power consumption, it should be helpful to improve the overall Battery Life. SUMMARY OF THE INVENTION The present invention provides a power management device that allows a user to turn off power of a peripheral device via an application or an embedded controller (Embedded Controller). The invention provides a power management method, which utilizes the original advanced bear and power interface architecture, so that the system can completely cut off the peripheral device's source to reduce unnecessary power consumption. In view of the above, the present invention provides a power management apparatus, in the μ system, and for controlling the power of the edge device, and the host includes a power switching material controller. Power switch = Lishang shuts off the power of the peripheral device and controls the pure human & = used to activate the peripheral device to perform the thunderbolt 0 ^ ^ λ field host system on the ip track ^ ^ private chess 牯, 肷The controller cuts off the power of the peripheral device via the element. Package source control list
在本發明一實施例中，上述電源控制單 控制器，上述開關設置於主機系統與周邊二侧與 社’控制器_域人式控制器與開關 肷入式控制ϋ根據省電模式輸出斷電信號時二 斷電信號關閉上述開關以切斷周邊裝置的電源是根據 ιίίΓ—實關巾’上述省電模式包括先進組態及 电源；丨面中之D1狀態、D2狀態或D3狀態。 在本發明—實施例中，上述嵌入式控制器更用以 該主機系統與該周邊裝置之傳輸介面。 卫 ^發明—實施射，上述省電模式可由作業系統所 月匕5應用程式所提供之使用者介面來設定或觸發。 在本發明—實施例中，上述嵌入式控制器支援^ 態及電源介面。 十在本發明一實施例中，上述主機系統更包括先進組態 及電源介面基本輸入輸出系統(ACPI m〇s)。 ^從另—個觀點來看，本發明提出一種電腦周邊的電源 官理方法，包括下砂驟：執行-省電模式；根據上述省 200917006 -J36twf.d〇c/n 龟权式，執行先進組態及電源介& % ± _:號一休眠::面:==輪 中，iii明—實施例中’上述在執行該省電模式之步驟 式。㈣顧程式執行或作㈣、統執行上述省電模 雷月—實施例中’上述省電模式包括先進組態及 電源介面中之D i狀態、D 2狀態或D 3狀離。 及 牛驟實關巾，上述在_周邊裝置的電源之 =中’更包括關__邊裝置與域純之間的電 運接。 ，發明因直接_ ACPI的架構，透過自行設計的驅 動程式(ACPI Bios Linkage Driver)可與 ACPI ㈣s 中· 制方法(C。伽lMethGd)溝通，如此—來即可讓喪入式控^ 為執行使用者所需的的電源管理指令，例如切斷周邊電源 的作業。 為讓本發明之上述特徵和優點能更明顯易懂，下文特 舉較佳貝施例，並配合所附圖式，作詳細說明如下。 【實施方式】 I一實施例 在ACPI規格中，規定電腦系統在工作與關機之間共 有4種待命狀態，電腦根據工作量的多寡而決定進入何種 狀態，以節省能源；其中依據節省能源由少至多大致上分 成四種狀態.S1.停止中央處理單元時鐘(st〇p CPU cl〇ck); s2.暫停至記憶體（suspend to RAM) ; S3·暫停至磁碟 200917006 T936twf.doc/n (suspend to disk); S4.軟關機(S0ft 〇ff)。而在周邊 其省電模式亦可分為三種狀態：D1、D2以及，I， D1、D2狀態由it件或周邊裝置自行定義其省電的中 開啟的功能’而D3狀態則表示移除所有的卫作電源 =與 雖然在ACPI規格中，D3狀態表示移除所有^工作 源，但由於周邊裝置為了支援甦醒(wake up) 始化(reinitialize)的功能，這些周邊裝置只是降低電力的ζ 耗而已，並非完全不消耗電力。對於可攜式電子 j =，腦)而言，所有周邊裝置所雜的總電力依;會影樂 到電池的續電力。 、β /圖1為根據本發明第-實施例之具有電源管理裝 ，統方塊圖。主機系、统110與周邊裝置130透過傳輸 :通用序列匯流排（Universal Serial Bus，咖)介面 G包括线單元112、基本輪人/輸出系統 _冉I〇S)114、電源116以及電源管理裝置12〇,其中電 〇 ^理裝置120尚包括嵌入式控制器122與電源切換單元 補單幻25悄尚包括控制器m以及開關 。周邊褒置130則包括内部電路132。開關126設置於 116 1Q與周邊裝置13G的電源線路上，也就是電源 於押制周。ιί置13G之内部電路132之間。開關126受控 Βϋ] 24 ’而控繼124則耗接於嵌入器控制器122。 b—气4稱與為嵌入^制1 122通常設置於主機板— 合。次軛為mother board)上，並與系統單元112相互整 200917006 -------- _ 936twf.doc/n 主機系、統110例如為筆記型電腦，周邊裝置n〇則例 如為ySB k身碟、藍牙接收器、USB集線器、無線耳機 接收益、滑鼠或外接鍵盤等電顧邊裝置。此外，在本實 例中’主齡統11Q支援AQpi之高階電源管理，因此 主機系統可經由㈣8114與Am控制器（未繪示)使主機 糸統110進入省電模式，如s卜S2、S3、S4等狀態，或 使周邊裝^ 130進人省電模式，如m、说、出等狀態。In an embodiment of the invention, the power control unit controller is configured to be disposed on the host system and the two sides of the host system, the controller, the domain controller, and the switch-in control, and output power-off according to the power-saving mode. When the signal is off, the power off signal is turned off to cut off the power of the peripheral device. According to ιίίΓ—the actual power saving mode, the above power saving mode includes advanced configuration and power supply; D1 state, D2 state or D3 state in the face. In the embodiment of the present invention, the embedded controller is further used as a transmission interface between the host system and the peripheral device. Wei Inventor - Implementing the shot, the above power saving mode can be set or triggered by the user interface provided by the operating system. In the present invention - the embodiment, the embedded controller supports the state and the power interface. In an embodiment of the invention, the host system further includes an advanced configuration and a power interface basic input/output system (ACPI m〇s). ^ From another point of view, the present invention proposes a power supply management method for the periphery of the computer, including the sanding step: execution-power saving mode; according to the above-mentioned province 200917006 -J36twf.d〇c/n turtle right type, implementing advanced Configuration and power supply & % ± _: number one sleep:: face: == round, iii Ming - in the embodiment 'the above-mentioned step of executing the power saving mode. (4) Execution or (4) execution of the above-mentioned power-saving mode Ray Moon - in the embodiment, the above power-saving mode includes D i state, D 2 state or D 3 state in the advanced configuration and power interface. And the cattle are actually closed, and the above-mentioned power supply in the peripheral device includes the electrical connection between the device and the domain. Invented by the direct _ ACPI architecture, through the ACPI Bios Linkage Driver can communicate with the ACPI (four) s system method (C. gamma lMethGd), so that the funeral control can be executed The power management commands required by the user, such as the operation of cutting off the peripheral power supply. The above features and advantages of the present invention will become more apparent and understood. [Embodiment] In an ACPI specification, a computer system has four standby states between work and shutdown, and the computer decides which state to enter according to the amount of work to save energy; Too much is roughly divided into four states. S1. Stop the central processing unit clock (st〇p CPU cl〇ck); s2. Pause to memory (suspend to RAM); S3 · Pause to disk 200917006 T936twf.doc/n (suspend to disk); S4. Soft shutdown (S0ft 〇 ff). In the surrounding, the power-saving mode can also be divided into three states: D1, D2, and I, D1, D2 states are defined by the IT device or the peripheral device, and the D3 state indicates that all the functions are removed. Guard power supply = although in the ACPI specification, the D3 status indicates that all the working sources are removed, but because the peripheral devices support the wake up reinitialize function, these peripheral devices only reduce the power consumption. However, it is not completely powerless. For the portable electronic j =, brain), the total power of all peripheral devices is mixed; the battery will continue to be powered. , β / Fig. 1 is a block diagram of a power management apparatus according to a first embodiment of the present invention. The host system 110 and the peripheral device 130 transmit and transmit: the universal serial bus interface (G) includes a line unit 112, a basic wheel/output system 114I〇S 114, a power source 116, and a power management device. 12〇, wherein the electric device 120 further includes an embedded controller 122 and a power switching unit, and the controller 25 and the switch are included. Peripheral device 130 then includes internal circuitry 132. The switch 126 is disposed on the power supply line of the 116 1Q and the peripheral device 13G, that is, the power supply is placed on the circumstance. Ιί is placed between the internal circuits 132 of 13G. The switch 126 is controlled by Βϋ] 24 ’ while the control 124 is consuming the embedder controller 122. The b-gas 4 is called the embedded system 1 122 and is usually placed on the motherboard. The secondary yoke is on the mother board and is integrated with the system unit 112. 200917006 -------- _ 936 twf.doc/n The host system 110 is, for example, a notebook computer, and the peripheral device n〇 is, for example, ySB k A device such as a USB flash drive, a Bluetooth receiver, a USB hub, a wireless headset, a mouse, or an external keyboard. In addition, in this example, the 'master age system 11Q supports AQpi's high-order power management, so the host system can enter the power-saving mode via the (4) 8114 and Am controllers (not shown), such as S2, S2, and S3. In the state of S4 or the like, or the surrounding device is put into a power saving mode, such as m, speaking, and out.
系統單元m巾則包域供制者介面之軟體程式 (software applicati〇n )、作業系統 程式(kernel)、虛擬元件驅動器(恤㈣d士…等相 關系、、充私式此外’系統單元！ 12也包括ACpi驅動器(八匸？1 driver)作業系統電源管理（〇perati〇n System p〇werThe system unit m towel is a soft-app program (software applicati〇n), an operating system program (kernel), a virtual component driver (shirt (four) d, etc.), and a private system. Also includes ACpi driver (Bagua? 1 driver) operating system power management (〇perati〇n System p〇wer
Management ’ 0SPM)等與Acpi相關的應用程式。在主機 iU二，系統單元112可透過刪114與嵌入式控制 态122進仃周邊裝置13〇的電源管理。 吏用者了、、’二由應用程式(如微軟Windows下的裝置/ 理員）等使用者介面下達執行省電模式的指令。當使用者^ 將周邊裝置130轉換至省電模式時，例糾 :丨進入D1、D2或D3狀態。此時，嵌入式· 合S根據省電模式輸出—斷電信號％，控制器12 號ss關閉連接於電源116與周邊裝置13 間的_ 126以完全切斷周邊裝置13G的電源。 ☆由於▲主機系統將周邊裝置轉換至省電模式是ACPI月 支板的功能’因此本實施例可直接應用於支援ACPI之兰 10 200917006 …93 6twf· d〇c/n 機系統no的系統架構中，僅需在電源116與周 之間設置電源切換單元125即 r_、D2、D3等狀態並不會 此藉由電源切換單元125即可完全= % } Ο 周邊裝置13。時，電源概 式控制器122的輪出導通開關126 ‘ ^130重新取得工作所需的電源。此外，值得—提的3 嵌人式控制器122可直接應用控^面 晶片來達成，μ侧外設置嵌人式控制器。 月、喜個角度來看，上述第—實施例可歸納為-電腦 =電源管理方法，配合廳協定與上二 弁之電腦周邊的電源管理方法流程圖。首 者可電模式’在此步驟s2ig中，使用 裝置轉換統所提供的使用者介面將周邊 ^轉換至令电杈式。然後，在步驟S220中 ΐ並式’執行先進組態及電源介面所支援之休眠^ =輸出-斷電信號。接著，在步驟⑽中= 電的效i 1直接刀斷周邊裝置的電源供給，以達到完全省 接下來，配合主機系統的功能方塊圖進—步說明本實 11 200917006 \j / y \j> a »T ·»936twf.doc/n. 施例之電源管理方法，以下說明請同時參照圖i、圖2以 及圖3 ’目3為根據本發明第一實施例之主機系統1〇〇之 功能方塊圖。由於筆記型電腦等主機系統都是由應用程 式、作業系統、韌體以及硬體等不同的功能區塊所結合而 成。因此在本實施例中，主機系統1〇〇可劃分為應用程式 310、動態鏈結程式庫320、作業系統與核心程式33〇、韌 體單元340以及硬體單單元35〇等功能區塊。若對應圖i 〇 實施例之說明，系統單元則包括應用程式310、動態 (Dynamic Link Library Dynamic-link library，縮寫為DLL) 320與作業系統與核心程式33〇等， 而BIOS114與肷人式控制器122則由動體單元34〇所控 制，經由BIOS114與嵌入式控制器122所控制的硬體單元 35〇則為電源切換單元125。 S使用者經由應用程式310執行省電模式時（步驟 S210)’應用程式310會經由動態鏈結程式庫32〇連結所需 的DLL檔，然後藉由作業系統與核心程式33〇所提供功能 來進行ACF»I所提供的電源管理功能，也就是步驟。 其中，作業系統與核心程式330中包括核心程式(kernd)、 虛擬元件驅動器(Virtual Device Driver)等相關系統程式、 ACPI驅動器(AC]PI driver)、作業系統電源管理物_⑽Management ’ 0SPM) and other applications related to Acpi. In the host iU 2, the system unit 112 can perform power management of the peripheral device 13 by deleting the 114 and the embedded control state 122. The user interface, the user interface (such as Microsoft Windows under the device / administrator) and other user interfaces to issue power-saving mode instructions. When the user ^ switches the peripheral device 130 to the power saving mode, the example corrects: 丨 enters the D1, D2 or D3 state. At this time, the embedded S is output according to the power saving mode - the power down signal %, and the controller 12 ss turns off the _ 126 connected between the power source 116 and the peripheral device 13 to completely cut off the power of the peripheral device 13G. ☆Because ▲The host system converts the peripheral device to the power saving mode is the function of the ACPI monthly support board. Therefore, this embodiment can be directly applied to the system architecture supporting ACPI's Lan 10 200917006 ... 93 6twf· d〇c/n machine system no In this case, it is only necessary to set the state of the power switching unit 125, that is, r_, D2, D3, etc. between the power source 116 and the circumference, and the power switching unit 125 does not completely = % } 周边 the peripheral device 13. At this time, the turn-on and turn-on switch 126 ' ^ 130 of the power supply outline controller 122 regains the power required for operation. In addition, it is worthwhile to mention that the 3 embedded controller 122 can be directly applied to the control chip, and the embedded controller is disposed outside the μ side. From a monthly perspective, the above-mentioned first embodiment can be summarized as: computer = power management method, with the flow chart of the power management method around the office agreement and the computer. In the first step, in the step s2ig, the user interface provided by the device conversion system is used to convert the periphery to the power mode. Then, in step S220, the sleep configuration is supported by the advanced configuration and the power supply interface supported by the sleep ^ = output - power down signal. Then, in step (10) = electric effect i 1 directly cut off the power supply of the peripheral device to achieve complete saving, with the function block diagram of the host system step by step to explain this real 11 200917006 \j / y \j> a »T ·»936twf.doc/n. Power management method of the embodiment, the following description refers to FIG. 2, FIG. 2 and FIG. 3 together. FIG. 3 is a function of the host system 1 according to the first embodiment of the present invention. Block diagram. Host systems such as notebook computers are composed of different functional blocks such as application, operating system, firmware and hardware. Therefore, in this embodiment, the host system 1 can be divided into functional blocks such as an application 310, a dynamic link library 320, an operating system and a core program 33, a firmware unit 340, and a hardware unit 35. According to the description of the embodiment, the system unit includes an application 310, a dynamic (Dynamic Link Library Dynamic-link library, abbreviated as DLL) 320, and an operating system and a core program 33, and the BIOS 114 and the human control. The device 122 is controlled by the mobile unit 34A, and the hardware unit 35 controlled by the BIOS 114 and the embedded controller 122 is the power switching unit 125. When the S user executes the power saving mode via the application 310 (step S210), the application 310 links the required DLL file via the dynamic link library 32, and then the functions provided by the operating system and the core program 33〇 Carry out the power management functions provided by ACF»I, which is the step. Among them, the operating system and the core program 330 include a core program (kernd), a virtual device driver (Virtual Device Driver) and other related system programs, an ACPI driver (AC) PI driver, and an operating system power management object (10).
System Power Management，OSPM)等 ACPI 相關之系統軟 體。 然後，經由韌體單元340來控制硬體單元35〇以切 斷周邊裝置的電源（步驟S230)。換句話說，也就是經由 12 200917006 936twf.doc/n BIOS114與後人式控彻122控制電源切換單元i25，使 其開關126關閉以切斷周邊裝置13〇的電源供給。 綜合上述，由於上述實施例利用電源切換單元來完全 切斷周邊裝置的電源供給，因此當周邊裝置進入省電模式 (如m、D2、D3狀態）時完全不會消耗主機系統(如筆記型 電腦）的電力’藉此’可降低主機系統的功率消耗，以達到 延長電池使用時限的目的。 〇 ^雖然本發明已以較佳實施例揭露如上，然其並非用以 限f本發明’任何所屬技術領域中具有通常知識者，在不 脫離本發明之精神和範圍内，當可作些許之更動與潤姊， 因此本發明之保護範圍當視後附之申請專利範圍所界定者 為準。 【圖式簡單說明】 圖1為根據本發明第一實施例之具有電源管理裝置之系 統方塊圖。 圖2為根據本發明第二實施例之電腦周邊的電源管理 C3 方法流程圖。 圖3為根據本發明第二實施例之主機系統1〇〇之功能 方塊圖。 【主要元件符號說明】 U〇 :主機系統 U2 :系統單元 114 .基本輸入/輸出糸統 116 :電源 13 200917006 936twf.doc/n 120 :電源管理裝置 122 :嵌入式控制器 124 :控制器 125 :電源切換單元 126 :開關 130 :周邊裝置 310 :應用程式 320 :動態鏈結程式庫 330 :作業系統與核心程式 340 :韌體單元 350 :硬體單單元 SS :斷電信號 S210〜S230 :步驟 14System Power Management, OSPM) and other ACPI related system software. Then, the hardware unit 35 is controlled via the firmware unit 340 to cut off the power of the peripheral device (step S230). In other words, the power supply switching unit i25 is controlled via the 12200917006 936 twf.doc/n BIOS 114 and the rear-end control 122, so that the switch 126 is turned off to cut off the power supply of the peripheral device 13A. In summary, since the above embodiment uses the power switching unit to completely cut off the power supply of the peripheral device, when the peripheral device enters the power saving mode (such as the m, D2, and D3 states), the host system is not consumed at all (such as a notebook computer). The power 'by this' can reduce the power consumption of the host system to achieve the purpose of extending the battery life. Although the present invention has been disclosed in the above preferred embodiments, it is not intended to limit the scope of the invention, and the invention may be practiced without departing from the spirit and scope of the invention. The scope of protection of the present invention is defined by the scope of the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a block diagram of a system having a power management apparatus according to a first embodiment of the present invention. 2 is a flow chart of a power management C3 method for a computer peripheral according to a second embodiment of the present invention. Fig. 3 is a functional block diagram of a host system 1 according to a second embodiment of the present invention. [Main component symbol description] U〇: Host system U2: System unit 114. Basic input/output system 116: Power supply 13 200917006 936twf.doc/n 120: Power management device 122: Embedded controller 124: Controller 125: Power switching unit 126: switch 130: peripheral device 310: application 320: dynamic link library 330: operating system and core program 340: firmware unit 350: hardware single unit SS: power down signal S210~S230: step 14