TWM330503U - Flash memory card with dual interface structure - Google Patents

Description

M330503 VIII. New Description: [New Technology Field] The present invention relates to a flash memory card, in particular to a dual interface flash memory card. [Prior Art] With the rapid development of computer technology, computer users are increasingly demanding USB flash memory devices, which not only require the increase in capacity and speed of flash memory devices, but also require flash memory devices. Functional expansion. The most widely used use of existing flash memory storage devices is to store some temporary files or use them as backups of data as portable storage devices. However, since the storage device can only be exposed to the host during use, affecting the mobility of the PC, if it is inserted into the host for a long time, it is prone to collision or other damage, so the storage device is usually After use, it will be pulled out quickly, so that the storage device can only be a mobile storage device, and it is not possible to become another fixed storage device for the PC outside the hard disk. . With the continuous updating of hardware products, the new generation operating system wind〇ws Vista has also been launched, and Pc users are full of expectations.

Boost technology is one of Vista's many innovative features. It is very attractive because it supports the USB2.0 protocol flash memory device to accelerate the performance of Vista PC, that is, the USB interface flash memory device through Ready B00st technology. Used as a system and memory. For the previous operating system (4) pc, if you want to improve its performance, increase the system memory, you need to buy a few more memory and you need to open the PC, insert the memory into the motherboard slot, from time to time and 5 M330503 economically need Small expenses. This is a very simple process for the PC of the material operating system. It only needs to insert the flash memory and then make some software settings on the host. However, due to the use of the Vista @ USB flash memory device acceleration function, the flash memory device is required to retain the USB interface of the I computer during the user operation, and the existing (four) memory storage device is exposed. % The design outside the machine brings a lot of hidden troubles to the system, and it also brings great inconvenience to the user. [New Content] The purpose of this new type is to provide a dual-interface flash memory card that can simultaneously implement a fixed storage function similar to a hard disk and utilize Vista's system acceleration function. Thus, the novel dual interface flash memory card includes a USB interface, an Express Card interface, a flash memory array, and a controller. The controller is configured to parse the host command received by the USB interface or the Express Card interface into a flash memory array control signal to control the operation of the flash memory array, and the controller reads the flash memory array status signal and returns Passed to a host. The control panel includes an interface controller and a flash memory controller, and the interface controller is configured to parse the host command received by the selected interface, and return the signal sent by the flash memory controller to the host; The flash memory controller parses the command sent by the interface controller into a flash memory array control signal for operating the flash memory array, and generates a corresponding signal back according to the state of the flash memory array. Interface controller. As an improvement of the present invention, the Express Card interface uses only the USB protocol. When the Express Card interface is connected to the host, the host and the dual interface flash memory card still transmit signals through the USB protocol. As another improvement of the present invention, the dual interface flash memory card further includes an interface selection module, and the interface selection module can select the USB interface or the Express Card interface to achieve flashing of the host and the dual interface. Signal transfer between memory cards. The interface selection module includes a power output end, a signal output end and a ground end, respectively connected to the corresponding end points of the controller; and further includes a USB interface power input end, a USB interface signal input end and a USB interface ground end Each is connected to a corresponding end of the USB interface; and further includes an Express Card interface power input terminal, an Express Card interface signal input terminal, and an Express Card interface ground terminal, respectively connected to the corresponding end points of the Express Card interface. The dual interface flash memory card further includes a transformer, and the output end of the transformer is connected to the USB interface power input of the interface selection module, and the input end is connected to the power output end of the USB interface, and is used for The power supply voltage of the USB interface is converted to the power supply voltage required by the controller. The USB interface of the new dual interface flash memory card can be a type A USB interface or a type B USB interface or a MiniUSB interface or a 1394 interface. The new dual-interface flash memory card includes a USB interface and an Express Card interface, making it easy to use two interfaces to adapt to the interface resources on the PC. The USB interface can be used for mobile storage or the Express M330503 can be used.

The Card interface configures the dual interface flash memory card in the host as a fixed storage or system accelerator card. Preferably, 'EXpress Car (i interface only uses the uSB protocol璋' not only makes full use of the high rate and hot pluggability of the USB interface protocol, but also makes the internal structure easier. The memory card also includes the interface selection module, which can be conveniently selected from two interfaces to avoid signal interference between the two interfaces.

The above and other technical contents, features and effects of the present invention will be apparent from the following detailed description of the preferred embodiments.

Intel Corporation officially named the next-generation PC Card as Express (5) at mF Fall2〇〇3 in the United States. The biggest difference from the traditional PC(5) technology is that EXpress Card technology can support pci_Exp (high-speed peripheral 70-connected bus) and USB2. () Both interfaces provide a hot-swappable connection directly between the peripheral device and the host system without the need to erect a bridge wafer between the system's chipset and the socket. At the same time, the Express (5) interface has many advantages such as smaller size, faster transmission speed, lower power consumption, and better fit for mobile systems. Therefore, the new design introduces the Express Card interface to be able to take advantage of these advantages. The architecture of a specific implementation of the dual-interface flash memory card of the present invention is as shown in FIG. 1 , and mainly includes two interfaces, an interface selection module, a controller, and a flash memory array; wherein, two interfaces are The M330503 USB interface and Express Card interface respectively; the controller includes an interface controller and a flash memory controller, and the interface controller includes Firmware and MCU. The interface selection module is used to select one of the two interfaces to be connected to the interface controller. The flash memory array can be either a flash memory or multiple flash memories. The new dual-interface flash memory card (4) 'first selects the interface to be used by the interface selection module' and then transmits the operation command sent by the host application material of the selected interface (4) to the interface controller, The interface controller (10) and the MCU parse the host command into a low-order operation command and send it to the flash memory controller. The last (four) memory (four) system H parses the low-order command into a flash memory control signal to control fast. The operation of the flash memory array. In the parsing process, the 'flash memory controller is simultaneously transmitted back to the interface controller according to the flash memory array break signal; the interface controller generates corresponding signals according to the interrupt signal from the flash memory 5 memory controller. The signal is passed back to the main user. This completes the connection between the host and the dual-interface flash memory card. (4) The shape of the new dual-interface flash memory card is as shown in the figure. The interface selection button can be used in various types.窨A / » - History of the work of the fast, example 2:: single-pole double-throw switch, when the selection button 2 pushes to the choice button 2 selects the interface 3 with the host for signal transmission, when the selection button 2 pushes to Express Car

Card 介® "" &, when you choose Express

Card " face 4 and the host to signal transmission;...

Express Card interface; 5 is usr for "face", 4 is ® 3 for USB interface cover. The new dual interface flash memory card u; | face and interface selection mode M330503 group connection as shown in Figure 3, USB The interface 3 can adopt various types of USB interfaces 3, such as a type A USB interface, a type B USB interface, a MiniUSB interface, and a 1394 interface. In this embodiment, a type USB2.0 interface protocol is adopted, which includes four interface pins, The corresponding wiring on the circuit board of the flash memory card is USB power pin V_USB, two differential signal pins u_DM and U-DP, ground wire GND; among them, the USB power pin V-USB input voltage is 5.0V, due to The interface controller and the back-end module require a power supply voltage of 3.3V. Therefore, a transformer is required to convert the voltage of the USB power pin V_USB output to 3.3V. The Express Card interface 4 has 26 pins, as shown in Figure 101. As shown in FIG. 126, since only the USB2.0 interface protocol in the Express Card interface is used in this embodiment, only the correspondence of the nine wires connected to the USB interface protocol to the flash memory card board is shown. Pin, wherein the pins 101, 120, 12 3, 126 is the ground GND, the pin 102 is the signal EC-DM, the pin 103 is the signal EC-DP, the pin 104 is the USB protocol selection line EC_S of the Express Card interface, and the pins 114, 115 are the power source V_EC; The Express Card power pin V_EC input voltage is 3.3 V. Since the USB protocol selection line EC_S of the Express Card interface is active at a low potential, it is connected to the ground GND in this embodiment to ensure that it is low in use.

The interface controller also includes four pins for connection with the above two interface pins. The four pins are the power pin USB_V, the two differential signal pins USB_DM and USB_DP, and the ground GND. Obviously, the corresponding pins of the two interfaces can be directly connected to the interface controller, that is, the ground terminals of the two interfaces are connected in parallel and connected to the ground of the interface controller, and the USB 10 M330503 interface power pin V_U SB is connected to the transformer. At the input end, the voltage of the USB interface power supply is reduced by the transformer to the voltage required by the back-end module, and then the power supply pin V-U is connected from the output end of the transformer to the power supply pin V-EC of the Express Card interface in parallel with the interface. The controller's power pin is connected to USB_V. The U-DM signal of the USB interface is connected to the USB_DM signal end of the interface controller in parallel with the EC-DM signal of the Express Card interface, and the U-DP signal of the USB interface and the EC-DP signal of the Express Card interface are connected in parallel to the interface controller. USB_DP signal terminal. This allows the module to be selected without the use of an interface, but there may be signal interference after the data lines of the two interfaces are connected in parallel. As an improvement of the above solution, an interface selection module is added in this embodiment. The interface selection module includes a power output terminal USB_V, two signal output terminals USB-DM, USB_DP and a ground terminal GND, which are respectively connected with corresponding interfaces of the interface controller; and also includes a USB interface power input terminal V_U and two USB interface signal input terminals. U_DM, U-DP and USB interface ground GND, and Express Card interface power input terminal V_EC, two Express Card interface signal input terminals EC-DM, EC-DP and Express Card interface ground GND, respectively, with two interfaces Corresponding endpoints are connected. When the interface selection key ena selects the interface to be USB, the USB interface 3 is selected to communicate with the interface controller for data transmission, and the interface selection module connects the signal lines USB_DM and USB_DP of the output terminal to the signal lines u_DM, U_DP of the input terminal, and simultaneously input. The output power and ground are also connected; when the interface selection key is used to make the ena select the interface as the Express Card, the Express Card interface 4 is selected to communicate with the interface controller, and the interface selection module outputs the signal lines USB_DM and USB_DP respectively. Connect the 11 M330503 signal lines EC-DM, EC DP, n-μμ 冋 at the input to the input and output power and ground connections. In this way, the interface between the two interfaces is connected to the interface control through the interface selection module, thereby realizing the signal transmission between the dual interface flash memory card and the host computer, and the flashing 5 memory card is used in the process towel. Can use the interface as a mobile storage device, or use the Express Card to block the PC, so as not to affect the mobility of the PC, which makes the flash memory card can be like a hard disk __ The sample is retained in the % machine as another fixed storage device for backing up data or expanding the storage space of the host. • X can be easily unplugged as a portable device after the user uses it = storage device is implemented between multiple hosts The mutual transfer of f materials. In addition, when using the Vista operating system to configure the flash memory card to be used as the system memory, 'because the flash memory card is embedded in the host, it is safe and convenient to avoid the instability of the system. The function of system acceleration is realized, so the purpose of the novel can be achieved. However, the above is only the preferred embodiment of the present invention, and does not limit the scope of the implementation of the present invention, that is, the simple equivalent change of the scope of the patent application and the new description of the present invention. Modifications are still within the scope of this new patent. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic structural view of a preferred embodiment of the present invention; FIG. 2 is a schematic view of the preferred embodiment; and FIG. 3 is a two-dimensional interface and an interface selection of the preferred embodiment. Connection diagram of the module. 12 M330503 [Key component symbol description] 1 Dual interface flash memory card 120 GND 101 GND 123 GND 102 EC_DM 126 GND 103 EC_DP 2 Interface selection button 104 EC_S 3 USB interface 114 V_EC 4 Express Card interface 115 V_EC 5 USB interface protection Cover 13

Claims (1)

M330503 IX. Patent application scope: 1. A dual-interface flash memory card for plugging in a host, including: a USB interface; an Express Card interface; a flash memory array; and a controller, The controller is configured to parse the host interface received by the USB interface or the Express Card interface into a flash memory array control signal to control operation of the flash memory array; and the controller reads the flash memory The status signal of the body array is passed back to the host. 2. The dual interface flash memory card of claim 1, wherein the controller comprises an interface controller and a flash memory controller, the interface controller is configured to parse the selected Interfacing the received host command and returning a signal sent by the flash memory controller to the host; the flash memory controller parses the command sent by the interface controller into a flash § And a body array control signal for operating the flash memory array and generating a corresponding signal back to the interface controller according to a state of the flash memory array. 3. The dual interface flash memory card according to claim 2, wherein the Express Card interface uses only the uSB protocol, wherein when the Express Card interface is connected to the host, The host and the dual interface flash memory card are still transmitting signals through the USB protocol. 4. According to any one of claims 1 to 3, the dual interface fast 14 M330503, flash δ 丨 丨 思 体 card ' The interface selection module further includes an interface between the USB interface or the Express Card interface to implement signal transmission between the dual interface flash memory card and the host. 5. The dual interface flash memory card according to claim 4, wherein the interface selection module comprises a power output terminal, a signal output terminal, and a ground terminal, respectively, and the control The device is connected to the end point; and further includes a USB interface power input end, a USB interface signal input end 0 and a USB interface ground end respectively connected to the corresponding end points of the USB interface; and an Express Card interface power input end, An Express Card interface signal input terminal and an Express Card interface ground terminal are respectively connected to corresponding end points of the Express Card interface. 6. The dual interface flash memory card according to claim 5, further comprising a transformer, wherein an output end of the transformer is connected to a USB interface power input end of the interface selection module, and an input thereof The end is connected to the power output of the USB interface for converting the power supply voltage of the USB interface to the power supply voltage required by the controller. The dual interface flash memory card according to any one of claims 1 to 3, wherein the USB interface is a type A USB interface or a B variable USB interface or a MiniUSB interface or a 1394 interface. 15