Patent Application
20150095540
1. Field of the Invention
The instant disclosure relates to an external device, a transmission system and the method of the heterogeneous device; in particular, to an external device, a transmission system and the method of the heterogeneous device connecting the PCI-E interface via the USB 3.0 interface.
2. Description of Related Art
According to the rapid development of integrated circuits, the computer could be small, light and has more computing power. For a small-size computer, the inner space would be limited. Thus, the small-size computer would not provide extension of the interface card. Accordingly, when any one newly added device needs to be added to the small-size computer, the device should be external connected.
Generally, the Universal Serial Bus (USB) is a mature interface for the external device. The advantages of USB are supporting Hot-Plug and Plug-and-Play. Further, the USB 3.0 socket is backward compatible to the conventional USB 2.0 device and the USB 1.1 device.
With the large and fast transmission needs, a new revision of USB standard, so called the USB 3.0, is offered. The capable of transferring data is up to 5 Gbit/s, thus the USB 3.0 provides a faster data transferring speed. Some manufacturers propose to convert other interface to the USB 3.0 interface. Thus, other heterogeneous device could be connected to the computer via the USB 3.0 interface, so as to make a single socket be able to connect with different devices. The other interfaces different from the USB 3.0 interfaces are described as heterogeneous devices in this instant disclosure.
The object of the instant disclosure is to offer an external device, a transmission system and a method of the heterogeneous device.
In order to achieve the aforementioned objects, according to an embodiment of the instant disclosure, a heterogeneous transmission system for selecting the corresponding transmission protocol according to the connected device is provided. The heterogeneous transmission system comprises a PCI-E device and a host. The PCI-E device has a first socket, a micro control unit and a first control module. The micro control unit couples to the first control module. The first socket has a plurality of first pins and a plurality of second pins. The host is for connecting to the PCI-E device. The host has a second socket and a second control module. The second socket is set up corresponding to the first socket of the PCI-E device. When the PCI-E device is connected to the host, the second control module is coupled to the micro control unit via the first pin, the second control module is coupled to the first control module via the second pin, the second control module drives the micro control unit via the plurality of first pins, such the micro control unit sends an side band signal to the first control module, the second control module sends an operating signal to the first control module via the second pin.
In order to achieve the aforementioned objects, according to an embodiment of the instant disclosure, an external device for connecting to a PCI-E device via a USB 3.0 socket is provided. The external device comprises a USB 3.0 socket, a first control module and a micro control module. The USB 3.0 socket is connecting to a host. The USB 3.0 socket has a plurality of first pins and a plurality of second pins. The first control module connects to the plurality of second pins of the USB 3.0 socket. The first control module receives an operating signal from the host. The micro control unit couples to the plurality of first pins of the USB 3.0 socket and the first control module, and receives an identify request via the plurality of first pins. The micro control unit generates a side band signal according to the identify request and sends the side band signal to the first control module.
In order to achieve the aforementioned objects, according to an embodiment of the instant disclosure, a transmission method of the heterogeneous device for connecting a PCI-E device via a USB 3.0 socket is provided. The transmission method comprises connecting the PCI-E device to the USB 3.0 socket of a host; a second control module of the host driving a micro control unit of the PCI-E device via a plurality of first pins of the USB 3.0 socket for generating a side band signal; the second control module sending an operating signal to a first control module of the PCI-E device via a plurality of second pins of the USB 3.0 socket; sending the side band signal to the first control module; and the first control module conducting the corresponding operation according to the side band signal and the operating signal.
In summary, the external device, the transmission system and the method of the heterogeneous device provides the correct timing to the operation of the PCI-E device. Thus, the instant disclosure could realize the purpose of hot plugging. The instant disclosure provides that the USB 3.0 socket could not only be connected with a USB 3.0 device but also a PCI-E device. The purpose of saving space could be achieved. The present invention also takes into account the practical purpose.
In order to further the understanding regarding the instant disclosure, the following embodiments are provided along with illustrations to facilitate the disclosure of the instant disclosure.
The aforementioned illustrations and following detailed descriptions are exemplary for the purpose of further explaining the scope of the instant disclosure. Other objectives and advantages related to the instant disclosure will be illustrated in the subsequent descriptions and appended drawings.
Please refer to
Please refer to
The pin number fifth is the second pin and connects to the receiving pin (RX−) of USB 3.0 and the PERn pin (PCI Express Receive Negative signal) of PCI-E. The pin number sixth is the second pin and connects to the receiving pin (RX+) of USB 3.0 and the PERp pin (PCI Express Receive Positive signal) of PCI-E. The pin number seventh is the second pin and connects to the grounding pin of USB 3.0 and the grounding pin of PCI-E. The pin number eighth is the second pin and connects to the transmission pin (TX−) and the PETn pin (PCI Express Transmit Negative signal) of PCI-E. The pin number ninth is the second pin and connects to the transmission pin (TX+) and the PETp pin (PCI Express Transmit Positive signal) of PCI-E.
The host 120 may be a personal computer, a notebook or an all in one PC (AIO), but the present invention is not so restricted. The host 120 comprises a second socket 121 and a second control module 122. The kind of the second control module 122 is determined by the operation process of the host 120. When the host 120 is booting, the second control module 122 is the Basic Input/Output System (BIOS), the second control module 122 may drive the platform controller Hub to conduct related processing. When the host 120 is performing the operation system (OS), the second control module 122 is executed by the operation system. The second socket 121 also utilizes the USB 3.0 transport protocol. In general, the type of the first socket 111 is with respect to the type of the second socket 121. A cable of the USB 3.0 may also be utilized to connect the first socket 111 with the second socket 121.
The second control module 122 could be served by different objects according to different operating environment of the host 120. In this embodiment, the operating environment is divided into booting and operation system. When the host 120 is booting, the BIOS represents the second control module 122. After the booting is completed, the host 120 would perform the operation system. In the environment of the operation system, the operation system is responsible for related processing of detecting the plug of the PCI-E device 110.
For ease to describe the operating process during booting process of the host 120, please refer to
S310: connecting an extension device to the second socket of the host;
S320: BIOS determines that the kind of the extension device is a USB 3.0 device or a PCI-E device;
S330: the USB 3.0 device is operated by the BIOS;
S340: BIOS drives the micro control unit of the PCI-E device via the first pin of the first socket to generate the side band signal;
S350: BIOS transmits the operating signal to the first control module of the PCI-E device via the plurality of first pins of the first socket:
S360: transmitting the side band signal to the first control module; and
S370: the first control module conducts the corresponding operation according to the side band signal and the operating signal.
In order to distinguish the un-identified device and the identified device, the connected device which is not identified yet is defined as an extension device. The extension device is connected to the host 120 via the cable or connector. Because the host 120 is in the booting status, the BIOS represents the second control module 122.
The BIOS identifies the kind of the extension device by the manner of counting and inquiring the information of the device. After the BIOS sends a identify request, the BIOS waits for the response of the micro control unit 112. Because the micro control unit 112 carries the related information of the PCI-E device 110 or the USB 3.0 device, the micro control unit 112 generates the corresponded responding signal after receiving the identify request. If the BIOS receives the responding signal of the micro control unit 112 during a predetermined time period, the BIOS identifies the PCI-E device. if the BIOS does not receive the responding signal during the predetermined time period, the BIOS deems that the device connecting to the second socket 121 is a USB 3.0 device. If the device connecting to the second socket 121 is a USB 3.0 device, the BIOS interact with the USB 3.0 device by the conventional program.
If the connected extension device is the PCI-E device 110, the BIOS drives the micro control unit 112 of the PCI-E device 10 via the first pins 11 of the first socket 111 to generate the side band signal. The side band signal may comprise the reset signal, the wakeup signal, and the sleep signal. The side band signal generated by the micro control unit 112 meets the control requirement of the PCI-E device 110, thus the PCI-E device 110 may operate with the correct timing. The BIOS sends the operating signal to the first control module 113 via the plurality of the second pins 115 of the first socket 111. The operating signal is the transmit signal (TX) or the receive signal (RX). The executing sequence of the steps S350 and S360 is not so restricted. An artisan of ordinary skill in the art will appreciate how to make the steps S350 and S360 be executed at the same time or change the executing sequence of the steps S350 and S360.
The transmission method of the heterogeneous device could be applied during not only the booting process but also the operation system process. When the operation system is performing, the BIOS would not control the peripheral hardware. Thus the operation system represents the second control module 122 when the operation system is performing. Please refer to
S410: connecting an extension device to the second socket of the host;
S420: the operation system determines that the kind of the extension device is a USB 3.0 device or a PCI-E device;
S430: the USB 3.0 device is operated by the operation system;
S440: the operation system drives the micro control unit of the PCI-E device via the first pin of the first socket to generate the side band signal;
S450: the operation system transmits the operating signal to the first control module of the PCI-E device via the plurality of first pins of the first socket;
S460: transmitting the side band signal to the first control module; and
S470: the first control module conducts the corresponding operation according to the side band signal and the operating signal.
Because the operation system substantive controls the hardware of the host 120, thus the operation system is treated as the second control module 120 after the booting process is completed. When the operation system detects that a device is plugged into the second socket 121, the operation system would call the associated interrupt routine. The interrupt routine may be realized in different manner according to the type of the operation system.
When the extension is connected to the host 120, the operation system sends the identify request to the micro control unit 112 of the PCI-E device 110 via the first pins 114. When the extension device receives the identify request, the micro control unit 112 sends back a responding signal to the host 120. When the operation system receives the responding signal, the operation system identifies the kind of the extension device according to the responding signal, and calls the associated interrupt routine to connect with the device. Taking Windows OS of the Microsoft Corporation as an example, the Windows OS calls the system management interrupt (SMI) or driver to identify or connect with the PCI-E device 110.
Then, the operation system drives the micro control unit 112 of the PCI-E device 110 via the first pins 114 of the first socket 111 to generate the side band signal. The side band signal generated by the micro control unit 112 meets the control requirement of the PCI-E device 110, thus the PCI-E device 110 may operate with the correct timing. The operation system sends the operating signal to the first control module 113 of the PCI-E device 110 via the plurality of the second pins 115 of the first socket 111. An artisan of ordinary skill in the art will appreciate how to make the steps S450 and S460 be executed at the same time or change the executing sequence of the steps S450 and S460.
According to above descriptions, the external device, the transmission system 100 and the method of the heterogeneous device provides the correct timing to the operation of the PCI-E device 110. Thus, the instant disclosure could realize the purpose of hot plugging. The instant disclosure provides that the USB 3.0 socket could not only be connected with a USB 3.0 device but also a PCI-E device 110. The purpose of saving space could be achieved. The present invention also takes into account the practical purpose.
The descriptions illustrated supra set forth simply the preferred embodiments of the instant disclosure; however, the characteristics of the instant disclosure are by no means restricted thereto. All changes, alternations, or modifications conveniently considered by those skilled in the art are deemed to be encompassed within the scope of the instant disclosure delineated by the following claims.
