CN2874626Y - MTV player compact flash card control line device - Google Patents

Abstract

The utility model relates to an use FLASH memory as the MTV player compact FLASH memory card control scheme device of storage media. The utility model aims to provide an adopt built-in FLASH memory as the storage media, make MTV player transmission, read-write speed fast. The utility model discloses a power output end connects CPU central processing unit, and FLASH memory connects one and truns into the FLASH interface to the compact FLASH memory driver on standard compact FLASH memory interface, and CPU central processing unit is connected to the compact FLASH memory driver, and power output end connects compact FLASH memory driver. The utility model discloses a IDE-DMA (integrated circuit device-direct memory access) drive mode of system realizes the read-write operation to IDE equipment to on integrating the circuit to the machine, reduce the volume of complete machine.

Description

MTV player compact flash card control line device

technical field

The utility model relates to an MTV player (MTV Player), in particular to an MTV player (MTV Player) control circuit device using a FLASH memory as a storage medium.

Background technique

MTV player (MTV Player) is different from MP3 and MP4. It has a small color LCD screen and uses super-large-capacity flash memory as storage. MTV Player (MTVPlayer) is a new video player for audio and video files that can play movies , DVD, VCD, MTV and other video files, and supports playback of many different video and audio formats, such as MPEG-4, ASF, WMV, RM, DAT and other formats of video and audio files. MTV Player (MTV Player) is compatible to play music in MP3 and WMA formats, supports voice recording (Voice Recording), line recording function (Line-in), and plug-and-play U disk function. Most of the MTV players (MTVPlayer) on the market adopt HDD or CFC compact flash memory card (Compact FlashCard) as storage device at present, but because the volume is very large, the volume of the machine is very large, so it is necessary to improve.

Contents of the invention

The purpose of this utility model is to provide a kind of use built-in FLAH memory as storage medium, control the FLASH memory access action by the built-in CFC Compact Flash Card (Compact Flash Card) interface connection control chip mode, make MTV player (MTVPlayer) transmit, read The writing speed is fast, and the volume of the whole machine is reduced.

In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

A compact flash memory card control circuit device for an MTV player, which includes a power supply for providing electric energy, a CPU central processing unit, a power supply output terminal connected to the CPU central processing unit, a FLASH memory for storing digital information, and a FLASH memory connected to a The FLASH interface is transformed into a compact flash drive with a standard compact flash interface, the compact flash drive is connected to the CPU central processing unit, and the power output terminal is connected to the compact flash drive.

The utility model adopts a high-performance FLASH memory control chip to control multi-chip FLASH read and write operations, and converts the FLASH interface into a standard compact flash memory (Compact Flash) interface to connect with the IDE interface of the main chip, with fast transmission speed. Set it to TrueIDE (true integrated circuit device) mode, mount the Flash storage space to the romfs (read-only small In the file system), the IDE-DMA (Integrated Device Electronics-Direct Memory Access "Integrated Device Electronics-Direct Memory Access") drive mode of the system is used to realize the read and write operations of the IDE device, thereby realizing the read and write operations of the Flash, making The reading and writing speed is faster, which improves the playback performance of the machine; integrating the circuit into the machine can reduce the space occupied by the standard Compact Flash card and reduce the volume of the machine.

Description of drawings

Fig. 1 is a circuit structure block diagram of the utility model embodiment.

Fig. 2 is a circuit diagram of the CFC part of the embodiment of the utility model.

Fig. 3 is a flow chart of the CFC part of the utility model embodiment.

The CFC refers to a compact flash card (Compact Flash Card).

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail:

The utility model components include: LTPS low-temperature polysilicon display screen 1, LTPS low-temperature polysilicon driver 2, CPU central processing unit 3, power detection circuit 4, voltage stabilization circuit 5, power supply 6, charging management chip 7, SDRAM image program memory 8, SDRAM System program memory 9, second FLASH memory 10, USB universal serial bus control chip 11, key 12, FLASH memory 13, compact flash drive 14, USB to (ATA) advanced technology attachment interface 15, USB interface 16, EEPROM EEPROM 17, S terminal 18, headphone output 19, headphone socket 20, audio digital/analog or analog/digital conversion chip 21, microphone 22, audio input 23, audio output 24, video output 25, DC USB Charger 26.

The utility model contains a power supply 6 that provides electric energy, a CPU central processing unit 3, the output end of the power supply 6 is connected to the CPU central processing unit 3, a FLASH memory 13 for storing digital information, and the FLASH memory 13 is connected to a FLASH interface into a A compact flash drive 14 with a standard compact flash (Compact Flash) interface, the compact flash drive 14 is connected to the CPU central processing unit 3, and the output end of the power supply 6 is connected to the compact flash drive 14.

The CPU central processing unit 3 input terminal is connected to the button 12, and the CPU central processing unit 3 output terminal is connected to the S terminal 18, USB to (ATA) advanced technology attachment interface 15, and ATA refers to "advanced technology attachment" (Advanced Technology Attachment). USB turns (ATA) advanced technology add-on device interface 15 and connects the EEPROM electricity erasable read-only memory 17 of storing its running program, and USB turns (ATA) advanced technology add-on device interface 15 and connects USB interface 16, and USB turns (ATA) advanced technology The additional device interface 15 transfers the information exchanged between the USB interface 16 and the outside world to the Flash memory 13 through the compact flash drive 14 . The CPU central processing unit 3 outputs an analog video signal to the LTPS low temperature polysilicon driver 2, the LTPS low temperature polysilicon finger (LOW TEMPERATUREPOLYSILICON), and the output end of the LTPS low temperature polysilicon driver 2 is connected to the LTPS low temperature polysilicon display screen 1 for displaying images.

The input terminal of the power supply 6 is connected to the DC USB charger 26 through the charging management chip 7, the output terminal of the power supply 6 is connected to the power detection circuit 4 and the voltage stabilizing circuit 5, and the power supply 6 is connected to the CPU central processing unit 3 and LTPS low temperature after being stepped down by the voltage stabilizing circuit 5 Polysilicon drive 2, compact flash drive 14, second FLASH memory 10, CPU central processing unit 3 is connected to the electric quantity detection circuit 4 that can detect the electric quantity of power supply 6, and power supply 6 is lithium battery. The CPU central processing unit 3 is provided with an audio input 23 interface, an audio output 24 interface, and a video output 25 interface, and the audio output 24 interface of the CPU central processing unit 3 is connected to the earphone jack 20 through a high-frequency digital/analog or analog/digital conversion chip 21 , the headphone output 19, the video output 25 interface of the CPU central processing unit 3 is connected to the S terminal 18 for externally outputting video signals.

CPU central processing unit 3 connects SDRAM image program memory 8, SDRAM system program memory 9, the second FLASH memory 10, CPU central processing unit 3 transfers system program from the second FLASH memory 10 and puts into SDRAM system program memory 9, CPU central processing Device 3 calls out image program from second FLASH memory 10 and puts into SDRAM image program memory 8, and SDRAM is (SYNCHRONOUS DYNAMIC RANDOMACCESS MEMORY synchronous dynamic random access memory). The CPU central processing unit 3 is connected in series with the FLASH memory 13 through the compact flash drive 14, and the CPU central processing unit 3 calls out the information of the FLASH memory 13 through the compact flash drive 14, and the CPU central processing unit 3 is connected in series with the SDRAM system program memory 9, and the CPU central processing unit 3 The central processing unit 3 puts the transferred information into the SDRAM system program memory 9 and decodes it through the CPU central processing unit 3 , and the image decoded by the CPU central processing unit 3 is displayed on the LTPS low-temperature polysilicon display screen 1 . The data audio signal of CPU central processing unit 3 is converted into analog audio through high-frequency digital/analog or analog/digital conversion chip 21 and is output 19 from earphone, and the audio frequency input 23 interface of CPU central processing unit 3 passes high-frequency digital/analog or analog The digital/digital conversion chip 21 is connected to the microphone 22, and the voice signal is generated by the microphone 22 and enters the audio digital/analog or analog/digital conversion chip 21 for amplification and ADC conversion into a data signal, which is processed by the CPU central processing unit 3 and transferred to the FLASH memory 13. The CPU central processing unit 3 is connected to the USB universal serial bus control chip 11 for controlling read and write operations, and the USB universal serial bus control chip 11 is connected to the USB interface 16, and the USB universal serial bus is also called "USB HOST".

When the machine is connected to the power supply 6 (lithium battery), press the button 12 "POWER" to start the machine, and the power supply will supply power to each part of the circuit after the voltage regulator circuit 5 steps down. When the voltage of the power supply 6 (lithium battery) is not enough, use an external power supply DC USB charger 26 charges power supply 6 (lithium battery) through charging management chip 7. When the machine was working normally, power detection circuit 4 can detect power supply 6 (lithium battery) power and feed back to CPU central processing unit 3 to display power.

When starting up, the CPU central processing unit 3 calls out the system program from the second FLASH memory 10 and puts it into the SDRAM system program memory 9 and the image program and puts it into the SDRAM image program memory 8 and runs. The processor 3 outputs an analog video signal to the LTPS low temperature polysilicon driver 2, and makes the LTPS low temperature polysilicon display 1 display images, and the video signal can also be output through the S terminal 18. When playing MP3 songs and MP4 programs, the CPU central processing unit 3 will transfer the information into the SDRAM system program memory 9 through the compact flash drive 14 and the FLASH memory 13, and after being decoded by the CPU central processing unit 3, the image is passed through the LTPS low temperature The polysilicon display screen 1 displays; the audio digital/analog or analog/digital conversion chip 21 converts the digital audio signal into analog audio and outputs it 19 from the earphone.

The external output audio is output from the earphone socket 20 . The voice signal is generated by the microphone 22 , enters the audio digital/analog or analog/digital conversion chip 21 to amplify and converts it into a data signal by ADC, and stores it in the FLASH memory 13 after being processed by the CPU central processing unit 3 . When the USB interface 16 is connected to the PC for uploading or downloading, the signal is controlled by the USB-to-(ATA) advanced technology attachment interface 15 to the compact flash drive 14, and then upload and download data to the computer and the Flash memory 13, and the USB-to-(ATA) ) The operating program of the advanced technology additional device interface 15 is transferred from the EEPROM electrically erasable read-only access device 17. When other secondary storage devices (U disk, MP3 player, multi-in-one card reader, USB mobile hard disk box or digital camera) are plugged in, the CPU central processing unit 3 controls the USB universal serial bus control chip 11 to perform read and write operations. The signal first passes through the USB communication protocol, simulates the host signal, and sends the IP to the slave storage device. After exchanging the device description signal and setting signal through the USB interface 16, the connection is successful.

This machine uses a high-performance FLASH memory 13 control chip to control multi-chip FLASH read and write operations, and through the compact flash drive 14, the FLASH interface is converted into a standard compact flash memory (Compact Flash) interface and the IDE interface of the CPU central processing unit 3 Connect, set it to TrueIDE (true integrated circuit device) mode, mount the FLASH memory 13 storage space to uclinux (Micro-Control-Linux "Linux system designed for the field of micro-control") in the form of an IDE device in the system In the romfs (read-only small file system), the IDE-DMA (Integrated Device Electronics-Direct Memory Access "Integrated Device Electronics-Direct Memory Access") drive mode of the system is used to realize the read and write operations of the IDE device, thereby realizing the FLASH Reading and writing of the memory 13 (see FIG. 2 and FIG. 3 ). This operation uses the IDE interface of the CPU central processing unit 3, the transmission speed is fast, and the use of DMA mode makes the reading and writing speed faster and improves the playback performance of the machine; secondly, the RSB2.0 chip of USBTOICE can directly communicate with this IDE The interface is connected, and the PC side of the PC-LINK process can directly read and write it without going through the CPU central processing unit 3, which improves the data transmission speed of the machine, and finally integrates the line into the machine to reduce the size of the standard CFC compact flash memory card (Compact FlashCard) to reduce the volume of the machine.

The above-mentioned embodiments are only used to illustrate the utility model for convenience, and are not intended to limit the utility model in any form. Anyone with ordinary knowledge in the technical field, if within the scope of the technical characteristics of the utility model , Equivalent embodiments made with partial changes or modifications using the technical content disclosed in the utility model, and without departing from the technical features of the utility model, all still fall within the scope of the utility model's technical features.

Claims (9)

1, a kind of MTV player compact flash memory card control circuit device, contain a power supply (6) that provides electric energy, a CPU central processing unit (3), power supply (6) output end connects CPU central processing unit (3), its It is characterized in that: a FLASH memory (13) for storing digital information, the FLASH memory (13) is connected to a compact flash drive (14) that converts the FLASH interface into a standard compact flash interface, and the compact flash The driver (14) is connected to the CPU central processing unit (3), and the output end of the power supply (6) is connected to the compact flash drive (14). 2, the MTV player compact flash memory card control circuit device according to claim 1, is characterized in that: described CPU central processing unit (3) input terminal connects button (12), CPU central processing unit (3) output terminal Connect the S terminal (18), USB to ATA advanced technology additional device interface (15), USB to ATA advanced technology additional device interface (15) to connect the EEPROM electrically erasable read-only memory (17) that stores its operating program, USB to The ATA advanced technology add-on interface (15) is connected to the USB interface (16), and the USB transfers the ATA advanced technology add-on interface (15) to transfer the information exchanged between the USB interface (16) and the outside world to the Flash memory through the compact flash drive (14). (13). 3. The MTV player compact flash memory card control circuit device according to claim 1, characterized in that: the CPU central processing unit (3) outputs an analog video signal to the LTPS low-temperature polysilicon driver (2), and the LTPS low-temperature polysilicon driver (2) The output terminal is connected to the LTPS low-temperature polysilicon display screen (1) for displaying images. 4, MTV player compact flash card control circuit device according to claim 1, is characterized in that: described power supply (6) input end is connected DC USB charger (26) through charging management chip (7), power supply ( 6) The output end is connected to the power detection circuit (4) and the voltage stabilizing circuit (5), and the power supply (6) is connected to the CPU central processing unit (3), the LTPS low-temperature polysilicon driver (2), The compact flash drive (14), the second FLASH memory (10), the CPU central processing unit (3) are connected to a power detection circuit (4) capable of detecting the power of the power supply (6), and the power supply (6) is a lithium battery. 5, MTV player compact flash memory card control line device according to claim 1, is characterized in that: described CPU central processing unit (3) is provided with audio input (23) interface, audio output (24) interface, Video output (25) interface, the audio output (24) interface of CPU central processing unit (3) connects earphone jack (20), earphone output (19) by high-frequency digital/analog or analog/digital conversion chip (21), CPU The video output (25) interface of the central processing unit (3) is connected to the S terminal (18) for externally outputting video signals. 6, MTV player compact flash memory card control circuit device according to claim 1, is characterized in that: described CPU central processing unit (3) connects SDRAM image program memory (8), SDRAM system program memory (9), The second FLASH memory (10), CPU central processing unit (3) calls out system program from the second FLASH memory (10) and puts into SDRAM system program memory (9), CPU central processing unit (3) from the second FLASH memory ( 10) call out the image program and put it into the SDRAM image program memory (8). 7. The MTV player compact flash memory card control circuit device according to claim 1, characterized in that: the CPU central processing unit (3) is connected in series with the FLASH memory (13) through the compact flash drive (14), and the CPU The central processing unit (3) is connected in series with the SDRAM system program memory (9), and the CPU central processing unit (3) is connected in series with the LTPS low-temperature polysilicon display screen (1). 8, MTV player compact flash memory card control circuit device according to claim 1, is characterized in that: the data audio signal of described CPU central processing unit (3) is through high-frequency digital/analog or analog/digital conversion chip ( 21) Convert to analog audio and output from earphones (19), the audio input (23) interface of CPU central processing unit (3) connects microphone (22) through high-frequency digital/analog or analog/digital conversion chip (21), voice The signal is generated by the microphone (22) and entered into the audio digital/analog or analog/digital conversion chip (21) for amplification and ADC conversion into a data signal, which is processed by the CPU central processing unit (3) and transferred to the FLASH memory (13). 9, MTV player compact flash memory card control circuit device according to claim 1, is characterized in that: described CPU central processing unit (3) connects the USB universal serial bus control chip (11) that controls read and write operation, The USB universal serial bus control chip (11) is connected to the USB interface (16).

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