The utility model content
The purpose of this utility model is to propose a kind of general purpose core core and FEP thereof of FEP, adopt modular mentality of designing, the core components such as processor, internal memory, clock and part power management are integrated, the operational system that forms a minimum, can realize the core board isolated operation, separately debugging; Processor draws at a standard interface by external pin the support of other peripheral hardwares to be realized.
For reaching this purpose, the utility model proposes a kind of general purpose core core of FEP, comprise processor and standard interface, described standard interface optionally is connected with the interface of described processor, and described standard interface adapts to the processor of at least two kinds of models in the use of specific application area.
Further, the general purpose core core of described FEP also comprises clock circuit, power management, FLASH storer and DDR storer, and described clock circuit, power management, FLASH storer and DDR storer are connected with described processor and are connected.
Further, described standard interface comprises SD/MMC interface, USB HOST HS, USB OTG HS, SPI interface, JGAG interface, audio interface, power interface, serial line interface, Ethernet interface, CAN interface, digital-quantity input interface, digital-quantity output interface and analog input and output interface.
Further, the interface mode of described standard interface is pinned, cassette, contact or stitch.
Further, the main body of the general purpose core core of described external pin and described FEP is perpendicular, described external pin is evenly distributed on two pin sockets, each described pin sockets length is not less than 51 centimetres and be not more than 51.6 centimetres, and each described pin sockets width is not less than 2.95 centimetres and be not more than 3.25 centimetres.
The utility model has also proposed a kind of FEP, comprises base plate and such as the general purpose core core of the described FEP of one of claim 1 to 5, the function of described base plate is included as described general purpose core core the interface support is provided.
Further, the function of described base plate also comprises: be used for providing the support of SD interface; Be used for providing USBhost and USB device to support; Be used for providing 2G network, 3G network or WIFI to support; Be used for providing the support of Ethernet interface; Be used for providing the hummer support; Be used for one road RS232, four road RS232/RS485 and one tunnel debugging UART (Universal Asynchronous Receiver/Transmitter, Universal Asynchronous Receiver ﹠ dispensing device) are supported; Be used for providing the support to JTAG (Joint Test Action Group, joint test behavior tissue) debug port; Be used for providing the support to eight tunnel inputs, eight tunnel outputs and analog input and output; Be used for providing the power management function support.
The utility model is by optionally being drawn out to external standard interface with the special interface of processor, the processor of realizing different model uses in the standardization of same specific application area, avoided producing along with the variation of processor a lot of interfaces, the poor compatibility of product need to not stopped the problems such as upgrading.
Embodiment
Further specify the technical solution of the utility model below in conjunction with accompanying drawing and by embodiment.
Embodiment one
Fig. 1 is the described general purpose core core of the present embodiment structural representation, as shown in Figure 1, the general purpose core core of the described FEP of the present embodiment comprises processor 101 and standard interface 102, described standard interface 102 optionally is connected with the interface of described processor 101, the processor 101 that described standard interface 101 adapts to Multiple Types uses in the standardization of same specific application area, supports simultaneously the IMX28 serial application of Aml186/88, Freescale of AMD in this specific application area of Internet of Things FEP such as this standard interface.
According to modular mentality of designing, the core components such as processor, internal memory, clock and part power management are integrated, the operational system that forms a minimum, can realize the isolated operation of described general purpose core core, separately debugging, therefore, described general purpose core core also can comprise built-in clock circuit 104, power management 103, FLASH storer 106 and DDR storer 105.
The present embodiment is for the specific application of Internet of Things FEP, draw drawing at a standard interface realization special interface by external pin, do not lock the standard interface that specific processor designs core board, so, processor 101 is to draw at a general standard interface by external pin to realize drawing of special interface to the support of other peripheral hardwares, can avoid producing a lot of interfaces along with the variation of processor, the poor compatibility of product need to not stopped the problems such as upgrading.
Fig. 2 is the standard interface block diagram of the utility model embodiment one described general purpose core core, as shown in Figure 2, described standard interface comprises SD/MMC interface, USB HOST HS, USB OTG HS, SPI interface, JGAG interface, audio interface, power interface, serial line interface, Ethernet interface, CAN interface, digital-quantity input interface, digital-quantity output interface and analog input and output interface.
Described standard interface has 160, the interface mode of standard interface can be pinned, cassette, contact or stitch, for easy to use, the external pin of the described general purpose core core of the present embodiment is evenly distributed on the stitch socket of two 80PIN, each described stitch socket lays respectively at the both sides of described general purpose core core, and described stitch and described chip body are perpendicular.
Particularly, Fig. 3 is the pin interface block diagram (A pin sockets) of the pin sockets of the described general purpose core core of the present embodiment, and Fig. 4 is the pin interface block diagram (B pin sockets) of the pin sockets of the described general purpose core core of the present embodiment, as described in Fig. 3 and Fig. 4.Wherein, the stitch interface on the A stitch socket is as shown in the table.
Pin interface on the B pin sockets is as shown in the table.
Above pinout only is a most preferred embodiment of the present utility model; can certainly be from different pin open numberings; perhaps adopt the always numbering of different countings; these all variations and change do not break away from the justice that should have of the present utility model; do not give unnecessary details one by one at this, described variation and change are all within protection domain of the present utility model.
Fig. 5 (a) is the vertical view of the described general purpose core core of the present embodiment pin sockets, and shown in Fig. 5 (a), laterally distance is 1.27 ± 0.1 centimetres between each adjacent described external pin; Vertically distance is 1.27 ± 0.1 centimetres also between each adjacent described external pin; Described pin sockets is long to be 1.27*40+0.5 ± 0.3 centimetre; Fig. 5 (b) is the front elevation of the described general purpose core core of the present embodiment pin sockets, shown in Fig. 5 (b), described external pin length is 2.45 ± 0.25 centimetres, described external leg diameter is about 0.50, described external pin divides two rows evenly to arrange along the long limit of described pin sockets, and two row's pins are 0.96 centimetre to the distance on the long limit of pin sockets; Fig. 5 (c) is the side view of the described general purpose core core of the present embodiment pin sockets; Fig. 5 (d) is the upward view of the described general purpose core core of the present embodiment pin sockets.
In the present embodiment on the general purpose core core of processor and FEP the connected mode of miscellaneous part be connected for conventional, there is no special character.The processor of different model and different model DDR storer connecting circuit figure slightly have any different, but its ultimate principle is identical.The present embodiment is take the DDR storer of the processor chips of the IMX28 series of Freescale and hynix H5PS1G63EFR 1Gb (64Mx16) DDR2 SDRAM as example, and its interface circuit figure as shown in Figure 6.
Wherein, because the dynamic memory interface (DMI) that processor carries is supported the storer of DDR2 and MDDR type, it is not strict especially that power consumption is required, so hynix H5PS1G63EFR 1Gb (64Mx 16) DDR2 SDRAM memory grain is preferred DDR type of memory.
Therefore not to repeat here with the connecting circuit figure of power management 103, clock circuit 104, FLASH storer 106 respectively for processor 101.
Embodiment two
The invention also discloses a kind of FEP, described FEP comprises the general purpose core core of base plate and embodiment one described FEP, and the function of described base plate is included as described general purpose core core the interface support is provided.
Fig. 7 is the hardware block diagram of the utility model embodiment two described FEPs, and as shown in Figure 7, the function that base plate is mainly realized also comprises:
(1) the SD interface is supported, as among Fig. 7 707;
(2) support of the mobile communication such as 2G/3G/WIFI is as among Fig. 7 703;
(3) to remote I/O and access support, as among Fig. 7 710;
(4) Ethernet Ethernet interface is supported, as among Fig. 7 704 and 705;
(5) hummer support is as among Fig. 7 706;
(6) the fieldbus port is supported, as among Fig. 7 711;
(7) to the support 709 of JTAG debug port;
(8) to eight tunnel inputs/eight tunnel output and supports of analog input and output, as among Fig. 7 712,713 and 714;
(9) power management function is as among Fig. 7 708.
Wherein, the SD interface framework is referring to Fig. 8; Alarms when hummer mainly is used in System self-test and unit exception etc. are by the digital output pin control of processor; Ethernet Ethernet interface is supported, because the Internet of Things FEP has the effect of part gateway, so, must support two network interfaces, the present embodiment network interface chip (MAC/PHY transceiver) is take the LAN8270A chip of SMSC as example, and the LAN8270A chip is supported the 10/100M self-adaptation and supported the functions such as cross spider Auto-Sensing and switching; For USB interface, a USB interface is drawn, use when doing debugging, support simultaneously External memory equipment, another interface transfers the mini-PCIE interface to, supports external WIFI/2G/3G module, in actual use, the present embodiment is supported respectively WCDMA and CDMA and GPRS take the EM770W of Huawei Company and EM660 module as example.
The general purpose core core of the described FEP of the present embodiment is the processor outside have been encapsulated the standardized shell of one deck use, make the more specialized and standardization of application, solve the compatibling problem of dissimilar processor, when processor model changes, only need again the corresponding interface of new processor to be connected on the standard interface of general purpose core core described in the utility model and get final product, FEP need not to do any change.
The above only is preferred embodiment of the present utility model, and is in order to limit the utility model, not all within spirit of the present utility model and principle, any modification of doing, is equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.