CN102902343B - Enabling the network device and its method of - Google Patents

Enabling the network device and its method of Download PDF

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CN102902343B
CN102902343B CN201110217280.8A CN201110217280A CN102902343B CN 102902343 B CN102902343 B CN 102902343B CN 201110217280 A CN201110217280 A CN 201110217280A CN 102902343 B CN102902343 B CN 102902343B
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signal
enable
enable signal
network device
internal
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CN201110217280.8A
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CN102902343A (en
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蔡志福
沈家庆
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瑞昱半导体股份有限公司
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Abstract

本发明披露一种网络装置与其使能方法,当网络装置由无偏压到有偏压,或一主装置开机时,先提供该网络装置中的一使能信号使能其内部的应用电路;若网络装置与该主装置产生数据链路时,由该主装置经由一预定脚位使能或禁能该应用电路。 The present invention discloses a method for enabling a network device thereto, when a network device biased to have no bias power, or a master device, to provide a network device which enable signal enabling application circuit inside thereof; If the network device to generate a data link with the master device from the master device enabled or disabled via a predetermined pin enabling the application circuit.

Description

网络装置与其使能方法 Enabling the network device and its method of

技术领域 FIELD

[0001] 本发明提供一种网络装置,尤其是一种网络装置的使能或禁能的方法。 [0001] The present invention provides a network device, in particular a network device is enabled or disabled in the method.

背景技术 Background technique

[0002] 在现代用电设备中,在环境保护的前提下,省电的要求日益增加。 [0002] In modern electrical equipment, under the premise of environmental protection, increasing power requirements. 相对于主装置,早期的系统都会保留一个脚位当成芯片使能(Chip Enable/Power Down)的功能,让芯片在禁能(Disable/Power Down)的状态下仅留下芯片使能电路而达到省电。 With respect to the master device, the system will retain the early bit as a chip can pin (Chip Enable / Power Down) function so that, in the cut-off state so that the chip can be (Disable / Power Down) leaving only the chip enable circuit is achieved power. 但在主装置(host)开机时或芯片开始有偏压时必须先使这个脚位是使芯片使能的状态,才能使用这个芯片或进行芯片设定,常常造成主装置开机设定上的困扰,因此,如何在不增加主装置操作系统的负担又能让系统设定有自由度而达到芯片节能的目的,即成为目前值得研宄的课题。 However, when the host device (host) chip startup or when there is bias must begin to make this chip enable pin is the state of energy, in order to use this chip or chip set, often causing distress on the main unit boot configuration So how, without increasing the burden on the host device's operating system and allows the system to have the freedom to set and achieve the purpose of energy-saving chip, it becomes worthy of study based on the current topic.

[0003] 后来,由于主装置软件(或操作系统OS)与系统的模块硬件的配合业界进一步发展了所谓的“插拔”(Plug and Play)芯片,即一种可即插即用的芯片。 [0003] Later, the master software (operating system or OS) and hardware modules with industry to further develop the system so-called "plug" (Plug and Play) chips, i.e. chips A plug and play. 而在应用上,插拔芯片是没有使能(Chip Enable/Power Down)脚位的,因此,倘若插拔芯片欲进入省电模式,需通过主装置藉由软件的方式下指令来控制。 In application, the plug is not enabled chip (Chip Enable / Power Down) pin, and therefore, if the plug chip to be powered down, the required instructions to control by way of software by the master device. 然而,通过软件的方式下指令来控制芯片的省电模式,其省电效能相较具有使能脚位的芯片,仍显不足。 However, software instructions to control by way of the power-saving mode of the chip, which has a power-saving performance compared to the chip enable pin, it is still insufficient.

发明内容 SUMMARY

[0004] 本发明的目的之一在于,不增加主装置操作系统开机设定的负担下,提供一种装置或方法,可以降低插拔模块所需功耗。 [0004] One object of the present invention, without increasing the burden on the host operating system boot device set in, there is provided a method or apparatus can reduce power consumption required plug-in modules.

[0005] 本发明的目的之一在于,在降低插拔模块所需功耗的同时,可提供插拔模块的使能信号的自由度。 [0005] One object of the present invention, while reducing power consumption required for the plug modules, a degree of freedom may be provided enable signal plug module.

[0006] 本发明披露了一种网络装置,设置于一计算机系统中,该计算机系统操作于一开机时段或一工作时段,该网络装置包含:一通信接口;一使能电路,耦接至该通信接口,用以产生一内部使能信号;一应用电路,耦接至该使能电路,用以依据该内部使能信号进行电路的运作;其中,于该开机时段,该使能电路预先地产生该内部使能信号以使能该应用电路;以及,于该工作时段,该使能电路通过该通信接口所输入的一外部使能指示信号产生该内部使能信号,以决定是否禁能或使能该应用电路。 [0006] The present invention discloses a network apparatus, provided in a computer system, the computer system is operating in a power or an operating time period, the network device comprising: a communications interface; an enable circuit, coupled to the a communication interface, for generating an internal enable signal; an application circuit, coupled to the enable circuit, according to the enable signal for the internal circuit for operation; wherein, in the start period, the enable circuit preliminarily generating the internal enable signal to enable the application circuit; and, in the working period, the enable circuit through an external communications interface input enable signal indicative of generating the internal enable signals, to determine whether to disable or enabling the application circuit.

[0007] 本发明也披露了应用于网络装置的方法,其包含以下步骤:产生一内部使能信号;若该网络装置于该开机时段,则根据预先产生的内部使能信号,使能一应用电路的运作;以及若网络装置于该工作时段,则通过所输入的一外部使能指示信号产生该内部使能信号,以决定是否禁能或使能该应用电路。 [0007] The present invention also discloses a method applied to a network device, comprising the steps of: generating an internal enable signal; if the network device to the start time, it enables the internal signal previously generated, enabling an application the operation of the circuit; and if the network device to the working hours, through an externally input enable signal is generated indicating that the internal enable signals, to determine whether to enable or disable the application circuit.

[0008] 为使贵审查委员对于本发明的结构目的和功效有更进一步的了解与认同,兹配合图标范例详细说明如后。 [0008] To give you a review of the committee structure for the purpose and effect of the present invention have a better understanding and recognition, such as the paradigm hereby icon with detailed instructions.

附图说明 BRIEF DESCRIPTION

[0009] 图1为本发明的计算机系统10的示意图; [0009] FIG. 1 is a schematic diagram of a computer system 10 of the present invention;

[0010] 图2为本发明的使能电路102的一实施例示意图;以及 [0010] The enabling circuit 102 in FIG. 2 a schematic view of one case of the present embodiment of the invention; and

[0011] 图3为用于本发明的网络装置的方法流程图。 [0011] FIG. 3 is a flowchart of a method for a network device according to the present invention.

[0012] 主要组件符号说明 [0012] Description of Symbols major components

[0013] 10 计算机系统 1a主装置 [0013] The computer system 10 master device 1a

[0014] 1b网络装置 101通信接口 [0014] 1b network communication interface apparatus 101

[0015] 102使能电路 103应用电路 [0015] 102 application circuit enable circuit 103

[0016] 201第一多路复用器202极性控制单元 [0016] The first multiplexer 201 polarity control unit 202

[0017] 203第二多路复用器s301〜s303步骤 [0017] The second multiplexer 203 s301~s303 step

[0018] Rl 第一缓存器 R2 第二缓存器 [0018] Rl R2 of the second register a first buffer

[0019] R3 第三缓存器 OCE外部使能指示信号 External [0019] R3 third buffer enable indication signal OCE

[0020] ICE内部使能信号 CS 控制信号 Internal [0020] ICE enable signal CS control signal

[0021] CEl第一使能信号 CE2第二使能信号 [0021] CEl first enable signal CE2 second enable signal

[0022] SI 使能选择信号 S2 极性控制信号 [0022] SI enable polarity control signal to select signal S2

[0023] S3 接脚选择信号 [0023] S3 pin select signal

具体实施方式 Detailed ways

[0024]图1的框图为揭露根据本发明的一实施例的一计算机系统10。 A block diagram of [0024] FIG. 1 is disclosed a computer system according to an embodiment 10 of the present invention. 计算机系统10操作于一开机时段或一工作时段,其包括一主装置1a与耦接主装置1a的一网络装置10b。 Computer system 10 operates in a power period or a period of work, a network device comprising a main unit 10b is coupled to the main unit 1a and 1a. 设置于计算机系统10中的网络装置1b还包括:一通信接口101、一使能电路102,耦接至该通信接口101,用以产生一内部使能信号ICE、一应用电路103,耦接至该使能电路102,用来根据该内部使能信号ICE进行电路的运作。 1b is provided in the network apparatus 10 in the computer system further comprising: a communication interface 101, an enabling circuit 102, coupled to the communication interface 101, for generating an internal enable signal the ICE, an application circuit 103, coupled to the enable circuit 102 is used to enable signal ICE operates based on the internal circuit. 其中,于该开机时段,该使能电路102预先地产生内部使能信号ICE以使能该应用电路103以及于该工作时段,该使能电路102通过该通信接口101所输入的一外部使能指示信号OCE产生该内部使能信号ICE,以决定是否禁能或使能该应用电路103。 Wherein, in the start period, the enable circuit 102 preliminarily generates an internal enable signal ICE to enable the application circuit 103 and to the working period, the enable circuit 102 via the communication 101 an external interface input enable generating a signal indicative of the OCE internal enable signal ICE, to determine whether to enable or disable the application circuit 103. 根据一实施例的应用电路103,可为实体层电路(PHY)或是媒体存取电路(MAC)。 Use according to one embodiment of the circuit 103, a circuit may be a physical layer (PHY) or media access circuit (MAC).

[0025] 以网络装置1b为一以太网络模块为例,数据链路(data connect1n)泛指网络装置1b与该主(host)装置1a完成交握(hand shaking)后,可正式传递及接收数据。 [0025] In a network device 1b to Ethernet module, for example, link data (data connect1n) refers to a network device 1b after handshaking (hand shaking), can be formally transmitted to the main (Host) and the reception data is completed apparatus 1a . 以网络装置1b为工业标准架构总线(ISA)模块为例,当该工业标准架构总线(ISA)模块中通信接口101的线性回授位移缓存器(LFSR)(未示出)输出为使能(enable active)时,此时网络装置1b与主(host)装置1a开始数据链路(data connect1n)。 In the network device bus 1b is an Industry Standard Architecture (ISA) module, for example, when the linear industry standard architecture bus (ISA) communication interface module 101 is a feedback shift register (the LFSR) (not shown) to the output enable ( when enable active), network device 1b of the main case (Host) device 1a starts a data link (data connect1n). 通信接口101亦包含一译码器(未示出),可译码由主装置1a提供的地址信号及控制信号。 The communication interface 101 also includes a decoder (not shown), it may be decoded address signals and control signals supplied from the master device 1a.

[0026] 网络装置1b亦可为万用串行总线(USB)装置,前述的以太网络模块或工业标准架构总线(ISA)为使用冷插拔,而万用串行总线(USB)为热插拔;万用串行总线的数据链路定义为网络装置1b与该主(host)装置1a相耦接而主(host)装置1a经由该通信接口101开始供电给网络装置1b后,主(host)装置1a与网络装置1b可正式传递及接收数据时。 [0026] The network device 1b may also be universal serial bus (USB) device, the Ethernet module or industry standard architecture bus (ISA) using a cold swap, and Universal Serial Bus (USB) is a hot-plug Stubbs; data link is defined the universal serial bus 1b to the main network device (host) coupled device 1a and the primary (host) device 1a 1b starts supplying power to the network device via the communication interface 101, a main (host ) means 1a 1b with a network device when transmitting and receiving data may be formal. 上述的预定脚位可由通信接口101中的通用目的输出入(GP1)脚位中选择。 Said predetermined pin may be a general purpose input and output (GP1) communication interface 101, the selection pin.

[0027] 市面上,网络装置1b的使能脚位的脚位位置及极性不见得会统一,故常常造成主(host)装置1a设定上的困扰。 [0027] market, pin positions and polarities enable pin 1b of the network device will not necessarily uniform, it is often cause troubles 1a setting main (Host) device. 因此,本发明的一实施例进一步关于使能电路102经由该通信接口101通知该主装置1a所述预定脚位(pin)的信息且使能电路102依该主装置1a的指令设定内部使能信号ICE的使能极性为低电压使能或高电压使能或预定脉冲使會K。 Accordingly, an embodiment of the present invention further relates to the enabling circuit 102 notifies the information of the 1a predetermined pin (pin) to the master device via the communication interface 101 and the enable circuit 102 is set by the internal instruction causes the master device 1a enable signal ICE is the polarity of the low voltage or a high voltage enable enable enable pulse will be predetermined or K.

[0028] 预定脉冲使能的优点在于,网络装置1b与主装置1a做数据链路(dataconnect1n)时往往有一些预定脉冲信号在该通信接口101是保留的(reserved),在节省网络装置1b脚位的考虑下,主装置1a可以从该通信接口101传送一保留信号给该网络装置10b,该网络装置1b即可由该通信接口101中的一脚位得知使能或禁能而不需设定一额外使能脚位。 Advantage of [0028] predetermined pulse enable that network often means 1a 1b and the host device for data link (dataconnect1n) a predetermined number of pulse signals in the communication interface 101 is reserved (Reserved), saving network device 1b foot consideration bit, master device 1a may transmit a reservation signal from the communication interface 101 to the network device 10b, the network device 1b can be known from the communication interface 101 in the kick-enabled or disabled without disposed given an additional enable pin.

[0029] 图2为揭露关于本发明的使能电路的一实施例,其包括一第一多路复用器201,用以依据一使能选择信号31选择性的输出一第一使能信号CE i或一第二使能信号CE2以作为该内部使能信号ICE,其中,第一使能信号CE1独立于该外部使能指示信号0CE,以及第二使能信号CE2相关于该外部使能指示信号OCE ; —极性控制单元202,用以依据一极性控制信号S2以决定内部使能信号ICE的极性;以及一第二多路复用器203,耦接至通信接口101中的多个接脚,用以依据一接脚选择信号S3自这些接脚决定一接脚,以输出外部使能指示信号OCE至极性控制单元202。 [0029] FIG. 2 is a disclosed embodiment of the present invention on the enabling circuit comprising a first multiplexer 201 for output according to a selection signal 31 can be selectively a first enable signal CE i or a second enable signal CE2 to the internal enable signal as the ICE, wherein the first enable signal CE1 is independent of the outer 0CE enable indication, and the second enable signal CE2 signal related to the external enable indication signal OCE; - polarity control unit 202, configured according to a polarity control signal S2 to determine the internal enable signal ICE polarity; and a second multiplexer 203 coupled to communication interface 101 a plurality of pins for a pin according to the selection signal S3 from these decisions pin a pin to external output enable signal indicative of the polarity control unit 202 OCE.

[0030] 使能电路102还包括一第一缓存器R1,用以储存一第一暂存值以控制该使能选择信号S1,其中,于开机时段,该第一暂存值控制使能选择信号S1使该第一使能信号CE i作为该内部使能信号ICE ;以及于工作时段,该第一暂存值控制使能选择信号S1使该第二使能信号CE2作为该内部使能信号ICE。 [0030] The enabling circuit 102 further includes a first register R1, for storing a first temporary value to control the enable selection signals S1, wherein, at boot time, the first temporary value selection control enabled the signal S1 first enable signal CE i the internal enable signal as the ICE; and the working period, the first temporary value enable selection control signal S1 so that the second enable signal CE2 as the internal enable signal ICE.

[0031] 使能电路102害包括一第二缓存器R2,用以储存一第二暂存值以控制该极性控制信号S2以及一第三缓存器R 3,用以储存一第三暂存值以控制该接脚选择信号S3。 [0031] The enable circuit 102 includes a second buffer injury R2, for storing a temporary value to control the second polarity control signal S2 and a third register R 3, for storing a third temporary storage value to control the pin select signal S3.

[0032] 图3为关于一种应用于网络装置的方法,其包含以下步骤: [0032] FIG. 3 is applied on a method of network devices, comprising the steps of:

[0033] s301:产生一内部使能信号ICE ; [0033] s301: generating an internal enable signal the ICE;

[0034] s302:若该网络装置1b于该开机时段,则根据预先产生的内部使能信号ICEJi能一应用电路103的运作; [0034] s302: If the operation of the circuit 103 to the network device 1b start period, the enable signal can ICEJi inside a pre-generated in accordance with the application;

[0035] s303:否则,若网络装置1b于该工作时段,则通过所输入的一外部使能指示信号OCE产生该内部使能信号ICE,以决定是否禁能或使能该应用电路103。 [0035] s303: Otherwise, if the network device 1b to the working hours, an external input through the enable signal OCE is generated indicating that the ICE internal enable signals, to determine whether to enable or disable the application circuit 103. 优选地,依据一使能选择信号&选择性的输出一第一使能信号CE i或一第二使能信号CE2以作为该内部使能信号ICE,其中,该第一使能信号CE1独立于该外部使能指示信号0CE,以及该第二使能信号CE2相关于该外部使能指示信号0CE,且储存一第一暂存值以控制该使能选择信号S i,其中,于该开机时段,该第一暂存值控制该使能选择信号S1使该第一使能信号CE i作为该内部使能信号ICE1;以及于该工作时段,该第一暂存值控制该使能选择信号S1使该第二使能信号CE2作为该内部使能信号ICE,且其中依据一极性控制信号S2W决定该内部使能信号ICE的极性。 Preferably, according to a selection signal & enable selectively outputting a first enable signal CE i or a second enable signal CE2 to the internal enable signal as the ICE, wherein the first enable signal CE1 independently the external enable signal indicating 0CE, and the second enable signal CE2 related to the external enable signal 0CE indication, and storing a value to control the first temporary enable selection signal S i, wherein, in the start period , the first temporary value of the control signal S1 so enabling selection of the first enable signal CE i Examples of the internal enable signal of ICE1; and in the working period, the first temporary value of the control signal S1 to select enable the second enable signal CE2 as the internal enable signal ICE, and wherein according to a polarity control signal S2W determines the polarity of the signal inside the ICE.

[0036] 由上述的实施例,可清楚地了解,当网络装置1b于开机时,使能电路102可通过参考第一缓存器R1的默认值,以预先地产生内部使能信号ICE至应用电路103,可使得网络装置1b不用等待外部使能指示信号OCE即可被启动。 [0036] From the above-described embodiments, it may be clearly understood, when the power to the network device 1b, the enabling circuit 102 may be default values ​​by referring to the first register R1, to generate an internal enable signal ICE is preliminarily applied to the circuit 103, may cause the network device 1b without waiting for an external enable signal OCE indication to be activated. 当开机完成,当网络装置1b再依据外部使能指示信号OCE通过一使能脚位以进行省电的控制。 When boot is completed, when the network apparatus 1b according to another external enable signal OCE indicated by an enable pin to control the power.

[0037] 另外,为防止使能脚位与主装置1a在电路板的绕线出现困难,在本实施例中,使能脚位的决定可由第三缓存器R3来控制,如此一来,可增加脚位应用上的自由度。 [0037] Further, in order to prevent the enable pin of the main difficulties in the winding apparatus 1a of the circuit board, in the present embodiment, the pin can be determined by the third register R3 is to control, this way, can be increased freedom of foot-bit applications.

[0038] 再者,对于信号的极性,本发明亦可通过第二缓存器R2来控制,防止网络装置1b与主装置1a在信号的极性上发生冲突时,而造成误动作的产生。 [0038] Further, the polarity of the signal, the present invention may also be controlled by the second register R2, prevent conflicts with the master network device 1b 1a occurs in the polarity of the signal, causing a malfunction.

[0039] 以上所述,仅为本发明的示例性实施例,不应当以之限定本发明所实施的范围。 [0039] The above descriptions are merely exemplary embodiments of the present invention and should not limit the scope to the embodiments of the present invention. 即大凡依本发明申请专利范围所作的均等变化与修饰,皆应仍属于本发明专利涵盖的范围内,谨请贵审查委员明鉴,并祈惠准,是所至祷。 That Almost all modifications and alterations under this patent scope of the invention made, all should remain within the scope of the invention covered by this patent, the committee would like to ask you to review the public will see, and pray quasi-Hui, it is Suozhi prayer.

Claims (12)

1.一种网络装置,设置于一计算机系统中,所述计算机系统操作于一开机时段或一工作时段,所述网络装置包含: 一通信接口; 一使能电路,耦接至所述通信接口,用以产生一内部使能信号; 一应用电路,耦接至所述使能电路,用以依据所述内部使能信号进行电路的运作; 其中,于所述开机时段,所述使能电路预先地产生所述内部使能信号以使能所述应用电路;以及,于所述工作时段,所述使能电路通过所述通信接口所输入的一外部使能指示信号产生所述内部使能信号,以决定是否禁能或使能所述应用电路; 其中,所述使能电路包含: 一第二多路复用器,耦接至所述通信接口中的多个接脚,用以依据一接脚选择信号自这些接脚决定一接脚,以输出所述外部使能指示信号。 1. A network device provided in a computer system, the computer system is operating in a power or an operating time period, the network device comprising: a communications interface; an enable circuit, coupled to the communication interface for generating an internal enable signal; an application circuit, coupled to the enabling circuit for enabling signal according to the internal circuit operate; wherein, in the start period, the enable circuit preliminarily generating the internal enable signal to enable said application circuit; and, in the working period, the enable circuit is externally inputted through a communication interface to enable the indication of the internal enable signal is generated signal, to determine whether to enable or disable the application circuit; wherein said enabling circuit comprises: a second multiplexer coupled to the plurality of communication interfaces pins, according to a pin select signal from these determining a pin pin to output the external enable signal indication.
2.根据权利要求1所述的网络装置,其中,所述使能电路包含: 一第一多路复用器,用以依据一使能选择信号选择性的输出一第一使能信号或一第二使能信号以作为该内部使能信号; 其中,所述第一使能信号独立于所述外部使能指示信号,以及所述第二使能信号相关于所述外部使能指示信号。 2. The network device according to claim 1, wherein said enabling circuit comprises: a first multiplexer, the output can be configured according to a selection signal selectively a first enable signal or a a second enable signal to the internal enable signal; wherein said first enable signal independent of the external enable signal indicative of, and related to said second enable signal to said external enable signal indication.
3.根据权利要求2所述的网络装置,其中,所述使能电路包含: 一第一缓存器,用以储存一第一暂存值以控制所述使能选择信号; 其中,于所述开机时段,所述第一暂存值控制所述使能选择信号使所述第一使能信号作为所述内部使能信号;以及于所述工作时段,所述第一暂存值控制所述使能选择信号使所述第二使能信号作为所述内部使能信号。 3. The network device according to claim 2, wherein said enabling circuit comprises: a first register for storing a value to control the first temporary enable selection signal; wherein, in the start period, the first temporary value of the enable control signal causes the first selected signal as the enable internal enable signal; and on the working period, the first temporary value of the control enable selection signal as said second enable signal to the internal enable signal.
4.根据权利要求1所述的网络装置,其中,所述使能电路包含: 一极性控制单元,用以依据一极性控制信号以决定所述内部使能信号的极性。 4. The network device of claim 1, wherein said enabling circuit comprises: a polarity control unit configured according to a polarity control signal to determine the polarity of the internal enable signal.
5.根据权利要求4所述的网络装置,其中,所述使能电路包含: 一第二缓存器,用以储存一第二暂存值以控制所述极性控制信号。 The network apparatus as claimed in claim 4, wherein said enabling circuit comprises: a second register for storing a temporary value to control the second polarity control signal.
6.根据权利要求1所述的网络装置,其中,所述使能电路包含: 一第三缓存器,用以储存一第三暂存值以控制所述接脚选择信号。 6. The network device according to claim 1, wherein said enabling circuit comprises: a third register, for storing a third temporary value to control selection of the signal pins.
7.—种应用于网络装置的方法,其包含: 产生一内部使能信号; 若所述网络装置于开机时段,则根据预先产生的内部使能信号,使能一应用电路的运作;以及若所述网络装置于工作时段,则通过所输入的一外部使能指示信号产生所述内部使能信号,以决定是否禁能或使能所述应用电路; 其中,所述应用于网络装置的方法,还包含: 依据一接脚选择信号自这些接脚决定一接脚,以输出所述外部使能指示信号。 7.- kinds method applied to a network device, comprising: generating an internal enable signal; and if the network device is switched on time period, the internal enable signal previously generated, so that the operation can apply a circuit; and if the network device in working hours, an external input through the enable signal is generated indicative of the internal enable signals, to determine whether to enable or disable the application circuit; wherein the method, is applied to the network device further comprising: a pin according to the selection signal from these determining a pin pin to output the external enable indication signal.
8.根据权利要求7所述的方法,还包含: 依据一使能选择信号选择性的输出一第一使能信号或一第二使能信号以作为所述内部使能信号,其中,所述第一使能信号独立于所述外部使能指示信号,以及所述第二使能信号相关于所述外部使能指示信号。 8. The method according to claim 7, further comprising: according to a selection signal can be output selectively a first or a second enabling signal enable signal as said internal enable signal, wherein said independently of the first enable signal indicating said external enable signal and said second enable signal to said external enable correlation indication signal.
9.根据权利要求8所述的方法,还包含: 储存一第一暂存值以控制所述使能选择信号,其中,于所述开机时段,所述第一暂存值控制所述使能选择信号使所述第一使能信号作为所述内部使能信号;以及于所述工作时段,该第一暂存值控制所述使能选择信号使所述第二使能信号作为所述内部使能信号。 9. The method of claim 8, further comprising: storing a first temporary value to control the enable selection signal, wherein, at the start period, the first temporary value of the enable control said selection signal as said first internal enable signal enable signal; and on the working period, the first temporary value of the enable control signal causes the second selected signal as the enable internal enable signal.
10.根据权利要求7所述的方法,还包含: 依据一极性控制信号以决定所述内部使能信号的极性。 10. The method according to claim 7, further comprising: according to a polarity control signal to determine the polarity of the internal enable signal.
11.根据权利要求10所述的方法,还包含: 储存一第二暂存值以控制所述极性控制信号。 11. The method according to claim 10, further comprising: storing a temporary value to control the second polarity control signal.
12.根据权利要求7所述的方法,还包含: 储存一第三暂存值以控制所述接脚选择信号。 12. The method according to claim 7, further comprising: storing a third temporary value to control the selection signal pins.
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