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Pin sharing system

A technology for sharing systems and pins, which is applied to instruments, electrical digital data processing, etc., and can solve problems such as connectivity and inability to integrate integrated circuits at the same time

Inactive Publication Date: 2005-10-19
MEDIATEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the pins of several peripheral devices share the same wiring, several devices sharing the same wiring will not be able to communicate with the integrated circuit at the same time, so that multiple peripherals in this pin-sharing system are often limited by the shared wiring and are in a state. idle state

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0032] see figure 1 , figure 1 It is a schematic diagram of the first embodiment of the pin sharing system 10 of the present invention. The pin sharing system 10 includes an integrated circuit 12 , a first device 14 , a second device 16 , and peripheral devices such as a memory device 18 . The integrated circuit includes a first pin group 20 and a second pin group 22 . The first device 14 has a first set of data pins 26, the second device 16 has a set of I / O data address pins 28, and the memory device 18 includes a set of low address pins 30, a set of high address pins 32 and a set of Memory data pin 34.

[0033] The pin sharing system 10 according to the present invention has a first set of wires 40, a second set of wires 42, and a third set of wires 44 for connecting the integrated circuit 12 to the first device 14, the second device 16, and the memory device 18. . The first set of wires 40 connects the first set of data pins 26 and the set of lower address pins 30 to t...

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PUM

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Abstract

The pin sharing system includes one integrated circuit, the first device, the second device, memory device, the first wire set, the second wire set and the third wire set. The integrated circuit includes the first pin set and the second pin set; the first device includes the first set of data pins; the second device includes one set of I / O data address pins; the memory device includes one set of lower address pins, one set of high address pins and one set of memory data pins; the first wire set connects the first set of data pins and the lower address pins to the first pin set; the second wire set connects the set of memory data pins and the I / O data address pins to the second pin set, and includes also register between the I / O data address pins to the second pin set for temporarily storing one set of address information and subsequent transmitting the address information to the second device; and the third wire set connects the high address pins and the register to the second pin set.

Description

technical field [0001] The present invention relates to a pin sharing system for sharing the lines connected between peripheral equipment and integrated circuits. Background technique [0002] With the rapid development of semiconductor manufacturing technology, the functions of general integrated circuits are becoming more and more complex, and some integrated circuits can even control many devices. However, when multiple devices are connected to the integrated circuit, a problem arises, that is, the number of externally connected pins of the integrated circuit is often insufficient due to the limitation of the integrated circuit packaging technology, so some pins must be designed to allow several devices to connect to each other. shared. Therefore, the pin-sharing system is a common structure in computers. A pin-shared system may consist of several peripherals, and an integrated circuit, usually a central processing unit. Each peripheral device is controlled by the inte...

Claims

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Application Information

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IPC IPC(8): G06F13/40
Inventor 蔡忠宏
Owner MEDIATEK INC