摘要:
The invention provides a method of performing data transfers on a PCI bus between a PCI bus master and a selected device. Wherein, there is a request signal and a grant signal on the PCI bus for a read/write transaction, and during the read/write transaction, the request signal and the grant signal are idle. The method comprises the steps of: (a) driving a first ready signal by the PCI bus master; (b) driving a second read signal by the selected device in response to the first ready signal, which initiates the read/write transaction; (c) using the request signal and the grant signal as a data transfer strobe signal during the write and read transaction, respectively, the data transfer strobe signal has a plurality of clocks; and (d) performing the data transfers on rising and falling edges of the clocks of the data transfer strobe signal.
摘要:
A terminating circuit module and a computer system using the same, in which a voltage regulator and a plurality of pull-up resistors can be provided on the terminating circuit module by the mainboard producer to reduce the area of the printed circuit board of the mainboard. Also, a nonvolatile memory can be provided on the terminating circuit module to store the information representing such terminating circuit module. The computer can automatically read the configuration of the memory and the terminating circuit module such as the slotted positions for the terminating circuit module and the memory module to prevent users from using the terminating circuit module in an incorrect way.
摘要:
A computer chipset having reduced peripheral pins for accessing a conventional ROM in a computer system is disclosed. There is a switching circuit within the chipset. When the computer is turned on, a booting control circuit activates a booting enabling signal, so that booting programs can be accessed from the ROM through the switching circuit and are executed in a main processor. Subsequently, contents stored in the ROM are moved to a main memory and the booting enabling signal is inactivated by the booting control circuit to allow a peripheral control circuit to communicate with peripheral devices. In this way, chipset having a low pin count (LPC) interface circuit can share the peripheral pins of the chipset to access the conventional ROMs, so that the production costs can be reduced.
摘要:
A method and circuit is provided for safeguarding the data stored in a CMOS RAM (Complementary Metal-Oxide Semiconductor Random Access Memory) unit in a computer system, such as an IBM-compatible personal computer (PC), when the battery unit used to power the CMOS RAM unit is below working level. By this method and circuit, when the PC is powered off, the current power level of the battery unit is detected to see whether it is below working level; if yes, the main power of the PC is turned on; then the data currently stored in the CMOS RAM unit are moved to a backup-data storage unit such as the hard disk; and after this, the main power is turned off again. At the next time the PC is powered on, the data currently stored in the backup-data storage unit are moved back to the CMOS RAM unit; and after this, a message is displaying on the monitor screen requesting the user to replace the CMOS RAM battery with a new one.
摘要:
A method for dynamically increasing the data processing capability of a computer system is provided. The computer system comprises a processor, a memory and a chipset. The data processing capability of the computer system is classified into a predetermined number of performance enhancing modes. At least one performance enhancing mode transition condition is checked to determine whether to automatically raise the performance enhancing mode of the computer system. The processor is suspended from using the processor bus during the transition of the performance enhancing mode of the computer system. The performance enhancing mode of the computer system is raised by increasing a first working frequency of the processor, a second working frequency of the processor bus and a third working frequency of the memory. The data processing rate of the computer system is further increased when the performance enhancing mode of the computer system is further raised.
摘要:
A printed circuit board (PCB) for a package substrate of a multi-package module (MPM). The PCB comprises a substrate and a heat sink thereon. The heat sink comprises a first portion under the package substrate of the MPM. The heat sink further comprises a second portion adjacent to the first portion, comprising at least one fin.
摘要:
Method and related apparatus for monitoring access modules, like memory or input/output modules, linked with a system bus of a computer system. In the present invention, access modules to be monitored and their corresponding monitoring intervals are preset. When a given access module initiates information exchange via the system bus, it is checked to see if the given access module matches any of the access modules to be monitored. If a match is found, a countdown is started from the corresponding monitoring interval. If the given access module completes the information exchange before the countdown finishes, the given access module is determined to be normal. Otherwise, a predetermined timeout event is executed for responding to a potential problem of the given access module.
摘要:
A motherboard with reduced power consumption is disclosed. The motherboard has a memory module slot, a DDR termination array, and a control chip. The DDR termination array couples to the memory module slot and provides a termination resistor that has one terminal coupled to a voltage source. The control chip provides a control signal. When the motherboard enters a power saving mode or before the memory module being inserted in the memory module slot, the control signal gives an indication to the DDR termination array for cutting off the connection between the termination resistor and the memory module slot. A switch and several termination resistors may substitute the DDR termination array as requirements. The control chip provides the control signal to open the switch and therefore cuts off the connections between termination resistors and the voltage source to achieve the power-conserving purpose.
摘要:
A feedback system capable of accommodating different memory module loading. The feedback system utilizes the signal received by the data strobe feedback pin of a control chipset to simulate or to obtain memory module loading information so that timing of the data signal and data strobe signal can be adjusted accordingly. Therefore, data can be accurately written to or read from the memory module. The embodiment of this invention includes using a variable reference voltage source and a comparator to adjust the timing of the signal to the data strobe feedback pin, using independent simulating loads circuit and specially designed memory module with simulating load, and using a data strobe signal circuit that includes complete memory module loading.
摘要:
A control chipset having dual-definition data pins capable of reducing circuit layout to memory module slots. Using dual-definition data pins of the control chipset and multiplexing/de-multiplexing devices, the control chipset is able to sense the particular type of memory modules plugged into memory slots automatically and hence assigning the function to each data pin accordingly. Consequently, circuit layout from the control chipset to the data pins of far off memory slots is simplified and overall circuit length is greatly reduced.