KR100751123B1 - Method and apparatus for using of (a) comlex ic - Google Patents

Abstract

A method and an apparatus for utilizing a port of a complex IC(Integrated Circuit) are provided to utilize a limited port for various purposes, thereby make the PCB design around the IC easy. An apparatus for using a port of a complex IC(Integrated Circuit) comprises the followings: a signal processing unit(100) for performing various functions such as FM-TX(FM Transmitter) module operation and control corresponding to user request; an FM-TX module unit(200) connected to a preset port of the signal processing unit for performing the FM-TX function; and a power unit(300) connected to a preset power port of the signal processing unit for supplying power to ICs of each video display unit.

Description

Method and apparatus for using port of composite IC {Method and apparatus for using of (a) comlex IC}

1 is a view showing a port utilization apparatus of a composite IC according to the prior art.

2 shows each port waveform according to the prior art;

3 is a view showing a port utilization apparatus of a composite IC according to the present invention.

4 shows each port waveform in accordance with the present invention.

5 is a flow chart illustrating a port utilization method of a composite IC according to the present invention.

<Explanation of symbols for main parts of the drawings>

100: signal processing unit 200: FM-TX module unit

300: power unit

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite IC, and more particularly, to an apparatus and method for utilizing a port of a composite IC, which can be utilized as multiple functions with one port in a composite IC integrating various functions into one.

In general, a video display device is a TV, and a TV selects and demodulates a broadcast signal according to a channel selected by a user from among broadcast signals transmitted from a broadcasting station, and divides it into voice and video, and processes the screen and speakers through corresponding audio and video processing. It is a video device output through.

Nowadays these TVs offer many additional features. Among them, there is a function called FM-TX (FM Transmitter), the FM-TX function is usually equipped with an FM transmitter module inside the TV to transmit the TV sound according to the frequency selected by the FM transmitter module, and built-in receiver such as FM radio If the receiver receives the received device and matches the frequency selected from the FM-TX in the TV with the frequency of the receiver such as the FM radio, the TV sound can be heard in the receiver such as the FM radio.

Recently, according to the trend of miniaturization and lightening of all products, among the internal components constituting the video display device, a microcomputer (not shown), a video processor (not shown), an IF processor (not shown), etc. A complex IC function that can perform a complex function by forming an IC is introduced.

Hereinafter, referring to the accompanying drawings, a description will be given of an apparatus for utilizing a complex IC according to the prior art.

1 is a block diagram showing a utilization device of a composite IC according to the prior art, Figure 2 is a view showing the waveform of each port according to the prior art.

First, the apparatus for utilizing a complex IC according to the related art includes a signal processor 10 performing a complex function and an FM-TX module unit 20 connected to a predetermined port of the signal processor 10 to perform an FM-TX function. And a power unit 30 connected to the power port of the signal processor 10 to perform power on / off operation of the system.

The signal processor 10 includes a clock port 11 for outputting a clock signal, a data port 12 for outputting a data signal, and a CE (Chip Enable) port for controlling the operation of the FM-TX module unit 20. 13, a SW port 14 for operating on / off of the FM-TX module unit 20, and a power port 15 for power on / off control of the power unit 30. It is composed.

The FM-TX module unit 20 includes a Vcc terminal 21 for power input, a ground terminal (GND) 22 to be grounded, a clock terminal 23 connected to the clock port 11, A data terminal 24 connected to the data port 12, a CE terminal 25 connected to the CE port 13, a SW port 26 connected to the SW port 14, and It is composed.

Looking at the operation of the utilization device of the composite IC according to the prior art configured as described above and the waveform of each port, when turning on the system as shown in Figure 2, the power port 15 is the power on / off of the system Outputs a high signal for control and controls the power unit 30 so that a corresponding power is supplied to each IC, and when the system is turned off, the power port 15 has a low signal. Output to control to cut off the power supply.

In addition, when the operation of the FM-TX module unit 20 is turned on (ON), the SW port 14 outputs a high signal to operate the FM-TX module unit 20, and when turned off (OFF) a low signal Output to turn off the operation of the FM-TX module unit 20.

The clock and data ports 11 and 12 are ports for inputting data and a clock generated through the signal processor 10, and the CE port 13 is a port of the FM-TX module unit 20. When data is changed, such as frequency setting, a high signal is outputted so that data and a clock can be inputted through the clock and data ports 11 and 12, and a low signal through the CE port 13. Outputs the internal data. The CE port 13 controls to input the correct data and clock.

However, the port utilization device of the composite IC according to the prior art is configured to separate the CE port for the control of the power port and the FM-TX module separately for the expansion of the port for the lack of port or function due to the addition of functions, etc. An IC is required, which complicates the circuit configuration.

In addition, since the power port and the CE port are separately configured, they occupy a limited space of a printed circuit board (PCB), which causes problems in PCB design and interference with each other due to interference with each other.

The present invention has been made to solve the above problems, and an object thereof is to enable a plurality of functions using one port.

In addition, there is another purpose to promote developer convenience by utilizing a limited number of ports.

Port utilization apparatus of the composite IC according to the present invention for achieving the above object is connected to a signal processing unit for performing various functions such as control and FM-TX module operation according to the user's request, and is connected to a predetermined port of the signal processing unit It includes an FM-TX module unit for performing the FM-TX function, and a power unit connected to a predetermined power port of the signal processing unit for supplying a corresponding power to each IC of the video display device.

Preferably, the signal processor includes a data port for outputting a data signal, a clock port for outputting a clock signal, a SW port for outputting an operation on / off command of the FM-TX module unit, and system power of the power unit. A power / CE port for on / off control and operation control of the FM-TX module unit is included.

More preferably, the signal processor may implement a port for power on / off control of the power unit and operation control of the FM-TX module unit as one port.

More preferably, the power / CE port maintains a high state so that a corresponding power is supplied to each IC when a user inputs a system on command and data and clock signals are input during operation of the FM-TX module unit. There is a characteristic.

More preferably, the power / CE port generates a momentary low signal to refresh internal data with the input data when data and a clock signal input through the signal processor are present. have.

Port utilization method of the composite IC according to the present invention for achieving the above object is a method of using a port of the composite IC having a signal processing unit, FM-TX module and the power unit, when the power is applied to the signal processing unit FM-TX function Determining whether an execution command has been received; and determining whether an input data signal and a clock signal exist when the execution command of the FM-TX function is received, and controlling the internal data to be updated with the corresponding input data. It is made to include its features.

Preferably, the step of controlling the internal data to be updated with the corresponding input data includes generating a momentary low signal when the input data exists, and updating the internal data with the input corresponding data. It has its features.

Hereinafter, a port utilization apparatus and method of a complex IC according to the present invention will be described in detail with reference to the accompanying drawings.

3 is a view showing a port utilization apparatus of the composite IC according to the present invention, Figure 4 is a view showing each port waveform according to the present invention, Figure 5 is a flow showing a port utilization method of the composite IC according to the present invention It is a chart.

The port utilization apparatus of the composite IC according to the present invention includes a signal processor 100 for performing various functions such as control and FM-TX function operation according to a user's request as shown in FIG. 3, and the signal processor 100. An FM-TX module unit 200 connected to a predetermined port for performing the FM-TX function, and a power unit connected to a preset port in the signal processing unit 100 to supply a corresponding power to each IC. And 300.

The signal processor 100 may include a port 110 for outputting a clock signal, a port 120 for outputting a data signal, and a SW port for outputting an operation on / off signal of the FM-TX module unit 200 ( 130 and a power / CE port 140 for outputting an image display device power control signal and an operation control signal of the FM-TX module unit 200.

In addition, the FM-TX module unit 200 has a Vcc terminal 210 for the power input, a ground terminal (GND) 220 to be grounded, and a clock terminal connected to the clock port 110 ( 230, a data terminal 240 connected to the data port 120, a CE terminal 250 connected to the power / CE 140 port, and a SW terminal connected to the SW port 130 ( 260).

Referring to the port utilization device operation of the composite IC according to the present invention configured as described above are as follows.

First, when a user inputs a power on command of the video display device set, the power / CE port 140 outputs a high signal, and the corresponding power is supplied to each IC of the video display device through the power unit 300. To control.

When the user inputs the FM-TX on command, the SW port 130 outputs a high signal to operate the FM-TX module unit 200.

In addition, when the user changes data such as the frequency setting of the FM-TX, data and a clock signal should be input. The power / CE port 140 maintains a high state when the user inputs a power-on command. Input of and clock is enabled.

At this time, the internal data must be updated with the input data. To update the data, the power / CE port 140 must be in a low state. However, if the power / CE port 140 maintains a low state, data can be updated. However, since the power of the video display device set is turned off, a low sink is instantaneously applied to the power / CE port 140. To allow internal data to be updated.

That is, referring to the waveform of the power / CE port 140 as shown in FIG. 4, when a user inputs a system on command, a control signal is output so that the corresponding power is supplied through the power unit 300 from that point in time. Keep high. When the user inputs an FM-TX function on command, the SW port 130 maintains a high state in order to input an operation on / off signal of the FM-TX module unit 200.

Since the power / CE port 140 maintains a high state at all times when a user inputs a system on command, the power / CE port 140 may input data and clock signals at any time. In this case, when data and clock signals are input, the data and clock signals are input, and when the data and clock signals are inputted, the state of the power / CE port 140 is instantaneously updated to update internal data with the corresponding data. Generate a low-to-high sync to update internal data.

In this case, since the timing at which the power / CE port 140 maintains the low state is small as about 1 ms, the power unit 300 does not perform the system off operation by determining that the power / CE port 140 is due to noise.

In the method of utilizing the port of the composite IC according to the present invention configured as described above, as shown in FIG. 5, it is first determined whether the user inputs an FM-TX function on command (S101).

Subsequently, if the user inputs an FM-TX function on command, the determination result (S101) operates the FM-TX module (S102).

In operation S103, it is determined whether data or a clock signal is input.

Subsequently, when the determination result (S103) data or clock signal is input, the data or clock signal is input, and it is determined whether the input is terminated (S104 to S105).

As a result of the determination (S105), when the data or clock signal input is terminated, a momentary low sink is generated (S106).

Subsequently, the internal data is updated with the data input through the step S104 (S107).

When the user inputs the FM-TX off command, the process ends. Otherwise, the process returns to the step S102 (S108).

As described above, the port utilization apparatus and method of the composite IC according to the present invention have the following effects.

First, since a plurality of functions can be utilized by a single port, port utilization can be efficiently performed, and an impossible problem of implementing a function due to lack of ports can be overcome.

Second, because a single port can utilize multiple functions, it is easy to design a PCB around a complex IC.

Third, the limited port can be used for various purposes, so that the developer's convenience can be achieved.

Claims (7)

A signal processor for performing various functions such as control and operation of an FM-TX module according to a user's request; An FM-TX module unit connected to a preset port of the signal processor to perform an FM-TX function; And a power unit connected to a preset power port of the signal processing unit to supply a corresponding power to each IC of the image display device. The method of claim 1, The signal processor A data port for outputting a data signal, a clock port for outputting a clock signal, a SW port for outputting an operation on / off command of the FM-TX module unit, system power on / off control of the power unit, and Device using port of the composite IC characterized in that it comprises a power / CE port for the operation control of the FM-TX module unit. The method of claim 2, The signal processing unit port utilization device of the composite IC, characterized in that for implementing the power on-off control of the power unit and the operation control of the FM-TX module unit as one port The method of claim 2, The power / CE port And a user inputs a system on command to maintain a high state such that power is supplied to each IC and data and clock signals are input during operation of the FM-TX module unit. The method of claim 2, The power / CE port And if a data signal and a clock signal input through the signal processor are present, generating a momentary low signal to refresh internal data with the input data. In the port utilization method of a composite IC having a signal processing unit, an FM-TX module and a power unit, Determining whether an FM-TX function execution command has been received when power is applied to the signal processor; And determining whether an input data signal and a clock signal exist when the FM-TX function execution command is received, and controlling the internal data to be updated with the corresponding input data. How to use. The method of claim 6, Controlling the internal data to be updated with the inputted data. Generating an instantaneous low signal if input data exists; And updating the internal data with the inputted data.

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