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Signal conversion device and method as well as communication equipment

A signal conversion device and technology for signal conversion, applied in the field of communication, can solve problems such as complex configuration process, and achieve the effects of simplifying configuration, saving circuit board space, and reducing circuit complexity

Active Publication Date: 2011-03-23
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Only the serial port interface is assigned to the internal bus as a logic device, and then the I / O address of the serial port register can be accessed, and the serial port controller can be read and written. Therefore, the configuration process is more complicated

Method used

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  • Signal conversion device and method as well as communication equipment
  • Signal conversion device and method as well as communication equipment
  • Signal conversion device and method as well as communication equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1 of the present invention provides a signal conversion device. Embodiment 1 of the present invention uses programmable logic devices such as CPLD or FPGA as a carrier, and utilizes the internal logic resources of the above-mentioned logic devices to realize the signal conversion device, thus simplifying the configuration process of the corresponding registers of the UART unit included in the signal conversion device .

[0025] figure 2 It is a schematic structural diagram of a signal conversion device according to Embodiment 1 of the present invention. Such as figure 2 As shown, the device 20 according to Embodiment 1 of the present invention is connected to the south bridge 40 through an LPC (Low Pin Count, low pin count) bus. see figure 2 , the device of embodiment 1 of the present invention comprises:

[0026] LPC bus interface unit 201, register configuration unit 202, UART unit 203;

[0027] The LPC bus interface unit 201 is configured to perfo...

Embodiment 2

[0095] Embodiment 2 of the present invention provides a signal conversion method.

[0096] Figure 8 It is a flowchart of a signal conversion method according to Embodiment 2 of the present invention. Such as Figure 8 As shown, the method includes:

[0097] Step S801, performing protocol analysis on signals from the LPC bus, and outputting local signals through the local bus, the local signals including address signals, data signals and control signals;

[0098] The local signals include address signals, data signals and control signals; the control signals include chip select signals, read enable signals and write enable signals.

[0099] The specific process of performing protocol analysis on signals from the LPC bus may include:

[0100] Receiving frame data from the LPC bus; judging whether the register read-write mode of the register of the UART unit is memory read-write or I / O read-write according to the register read-write identification in the frame data; when the...

Embodiment 3

[0113] see Figure 9 , Embodiment 3 of the present invention provides a communication device 90, the communication device includes: CPU901, South Bridge 902, signal conversion device 903 and peripheral equipment 904 according to Embodiment 1 of the present invention; The LPC interface sends a signal 904 to the signal conversion device 903 and / or peripheral equipment; the signal conversion device 903 is used to convert the data of the LPC interface and UART data, and send the signal sent by the CPU901 to the peripheral device The device 904 sends or receives signals from the peripheral device 904 for feedback to the CPU 901 .

[0114] In Embodiment 3 of the present invention, both the super I / O function and the system management and monitoring function are completed by CPLD, and the signal conversion device, NOR flash interface, detection and monitoring functions are integrated or fused. On the premise of not adding devices, only about 280 logic unit resources and up to 10 pin...

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Abstract

The embodiment of the invention provides a signal conversion device and method as well as communication equipment. The signal conversion device comprises an LPC (Low Pin Count) bus interface unit, a register configuration unit and a UART (Universal Asynchronous Receiver Transmitter) unit, wherein the LPC bus interface unit is used for performing protocol analysis on signals from an LPC bus and outputting local signals through a local bus, and the local signals comprise a control signal, an address signal and a data signal; the register configuration unit is used for configuring registers of the UART unit according to the local signals; the registers of the UART unit are allocated in a memory address space and an I / O address space; and the UART unit is used for converting data from the LPCbus into serial data according to the local signals and the values of configured registers of the UART unit and then outputting the serial data through a UART interface or outputting the serial data received by the UART interface to the LPC bus through the local signals. The embodiment of the invention can simplify the configuration process of the registers of the USRT unit.

Description

technical field [0001] The invention relates to the communication field, in particular to a device, a method and a communication device for converting an LPC bus to a UART interface. Background technique [0002] The serial communication interface protocol provides the simplest standard serial interface for data communication, so it has been widely used in many devices. When electronic design engineers debug complex embedded systems, human-computer interaction is often involved. In the process of human-computer interaction, the serial port of the embedded system needs to be used as the console (console), so that the host computer can control the embedded system through the serial port. Embedded systems, such as printing information through a serial port, so almost all embedded systems require a serial port. In the application in the field of telecommunications, the serial port is not only used for local debugging, but also the BMC (Baseboard Management Controller, Baseboard...

Claims

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Application Information

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IPC IPC(8): G06F13/38
Inventor 朱晓明
Owner HUAWEI TECH CO LTD
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