Serial communiction bus external equipment interface

A technology of serial communication bus and external equipment, applied in the direction of instruments, electrical digital data processing, etc., can solve the problems of high overhead, low efficiency, and not supporting full-duplex transmission, etc., and achieve simple structure, high transmission efficiency, and wide application range wide effect
CN1588337AInactive Publication Date: 2005-03-02VIMICRO CORP
0 Cites 18 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
VIMICRO CORP
Publication Date
2005-03-02
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The serial communication bus peripheral interface consists of physical layer protocol realizing module, higher layer protocol realizing module and interface module. The physical layer protocol realizing module receives serial clock signal and generates clock signal output to the higher layer protocol realizing module and the interface module in SPI mode; the interface module connects the effective selection signal line of the slave equipment, I / O data line of the master / slave equipment and read / write data line to form the read / write data channel of the serial communication bus peripheral interface; and the higher layer protocol realizing module receives the higher layer protocol frame for data communication, receives forced sync signal from the master equipment for united sync of master and slave equipment and outputs read / write address signal and read / write enable signal. The present invention has the features of high, universality, high transmission efficiency, etc.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a serial communication bus external device interface. technical background

[0002] Serial communication is a very important data communication method between the master device and the external device. Fewer data lines are required compared to a parallel communication bus. Serial Peripheral Interface (Serial Peripheral Interface, SPI) is a synchronous serial bus proposed by Motorola, which is used for data exchange between the master device and the peripheral device. The SPI bus is a master-slave communication mechanism, the host is the master, and the peripheral is the slave. The SPI bus consists of 4 buses, namely the serial clock line (SCK), the master device input / slave device output data line (MISO), the master device output / slave device input data line (MOSI) and the slave device effective selection line ( SSN). The SPI interface is a simple 8-bit data synchronous serial interface. This interface is used for fast seri...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More