JPS58178428A - Data processor - Google Patents

Abstract

PURPOSE:To eliminate the pin neck of an LSI and a package by reading the contents of an option setting part before a device is used and writing them in the option setting contents storage register in the device successively. CONSTITUTION:When the power source of a data processor is turned on or when an initial microprogram is loaded, an option setting item processing part 25 follows a predetermined procedure to start reading the setting contents of the option setting part 21 through a scan interface control part 29. After this reading operation, predetermined processing for every read option setting item is carried out. Then, the processing part 25 writes option data in the option setting item storage register 23 lastly. Once all optional data are set in the register 23, the device is usable.

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention The present invention relates to a data processing apparatus in which the operation of the apparatus is determined by the settings of an obscene setting section.

Note that the optional operations mentioned here refer to items that are selected depending on the system environment, such as the operation mode of the partner device connected to the data processing device, the type of line to be connected, etc., and the items that are selected depending on the customer's system usage pattern. It means a general term for.

Specific examples of setting items include device address,
There are settings for memory size, operation mode, line attributes, etc.

PRIOR ART In a conventional data processing device, as shown in FIG. 1, an option setting section 10 consisting of a switch 4 and a pull amplifier resistor 3 outputs the same number of output signals as option items to directly determine the device operation. It was a method to draw them into part 2. In this method, the same number of signal lines as the option items are required between the option setting section 1 and the device lr operation determining section 2, and if both sections are in different packages, this may cause a pin neck in the package. Ta. or,
In an LSI-based data processing device, the option setting section 1 consisting of a jumper wire or switch is connected to the LSI.
Since it cannot be converted into an SI, it has to be placed outside the LSI, and the LSI
This has the disadvantage of causing a pin neck and increasing the number of LSIs.

SUMMARY OF THE INVENTION An object of the present invention is to provide a data processing device that eliminates the above-mentioned drawbacks, and to provide a data processing device that eliminates the above-mentioned drawbacks. The object of the present invention is to provide a means for eliminating pin necks in LSI or packages caused by the loading method.

The present invention is characterized in that, in a data processing device where the device operation is determined by the option data settings, there is a means for reading the option data settings; This method reads the contents of option data before using the device, performs the necessary processing on the read contents, and then sequentially writes them to the option settings storage register in the device. It's what I did.

Examples of the invention An embodiment of the present invention will be described below with reference to FIG.

FIG. 2 is a block diagram of an option data importing section of a data processing device according to an embodiment of the present invention.

Reference numeral 21 denotes an off-switch setting section consisting of a switch 28 for setting optional items, a pull amplifier resistor 27, etc.;
2 is an LSI consisting of a control circuit etc. that determines the operation of the device based on the option data set by the onoshizen setting section 21;
23 is an optional data storage register 1 for the optional setting item processing section 25.
Reference numeral 24 denotes an interface used for reading the input information of the option setting item 1fi521 and writing the option input to the option setting item storage register 23, and 25 refers to the setting of the first scene setting fA21. After reading the contents and performing the necessary processing for each setting item, an open setting item processing unit executes a series of processes until it is stored in the optional setting item storage register 26. 29 is an automatic setting item processing unit. The item processing section 25 is a scan interface control section that controls the decoding of the 1h command and transmitting the specified contents of the switch 28 onto the interface 24 in a bit serial manner. 26 is a device operation determining circuit that receives an output signal from the optional learning setting item storage register 26 and determines the device operation. In the data processing device, the instructed processing is performed using the cutting signal from the device operation determining circuit 26. According to the above, L8122111
1 requires a pin and circuit for the interface 24, but this pin is a pin and circuit that is generally provided to facilitate LSI diagnosis (a pin for scanning in and out of registers in the LSI). and circuits).

Next, the operation of this embodiment will be explained.

When the data processing device is powered on or the initial microprogram is loaded, Ogusi W/setting item processing fM! , 25
starts the operation of reading the setting contents of the option data 21 via the scan interface control section 29 according to a predetermined procedure. When this reading operation is completed, a predetermined process is smoothly executed for each desired setting item read. The predetermined processing includes processing such as inverting read data and performing calculations.

When this process is completed, the option setting item processing section 25 finally writes the option data into the off-scene setting item storage register 23.

When all option data has been set in the option W/setting item storage register 23, the device becomes ready for use.

Effects of the Invention With the present invention as described above, the following effects can be obtained.

(1) Since there is no need to directly lead the signal line indicating the setting contents from the option data into the circuit within the device, pin necks in LSIs and packages are eliminated, and the device can be realized with a small number of LSIs and pancakes.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a conceptual diagram of an interface between a conventional Option B7 setting section and a device operation determining section, and FIG. 2 is a diagram showing an embodiment of the present invention. In FIG. 2, 21...option layer setting unit 22...LSI 23...offset setting item storage register 24...
Interface 25...Optional setting item processing unit 26...Device operation determining circuit 29°° Scan interface control unit'7 1
figure

Claims (1)

[Claims] In a data processing device that has an option setting section that needs to be set in advance before using the device, an option setting item that reads the settings of the option setting section and adds necessary processing to the settings. A data processing device comprising: a processing section; and an option setting item storage register that stores an output from the option setting item processing section.