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Verification method of LPC slave device and LPC master device with few-pin interface

A technology of master equipment and equipment, applied in the direction of digital data authentication, instrument, calculation, etc., can solve the problem of not being able to verify the LPC master equipment function verification model and so on

Active Publication Date: 2020-11-06
LOONGSON TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there is no verification model capable of verifying the function of the LPC master device in the prior art

Method used

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  • Verification method of LPC slave device and LPC master device with few-pin interface
  • Verification method of LPC slave device and LPC master device with few-pin interface
  • Verification method of LPC slave device and LPC master device with few-pin interface

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Embodiment Construction

[0025] figure 1 A schematic diagram of connection between a Low Pin Count (LPC for short) slave device and an LPC master device provided for the embodiment of the present invention. The embodiment of the present invention provides an LPC slave device verification model for a verification model that does not have the IO, MEMORY and FIRMWARE MEMORY functions of LPC in the prior art. The LPC slave device verification model is specifically a function or module of the LPC slave device, that is, the LPC slave device device includes the LPC slave device verification model, as figure 1 As shown, LPC slave device 9 includes LPC slave device verification model 10, LPC slave device verification model 10 includes monitor 11 and driver 12, LPC slave device 9 and LPC master device 14 are connected by LPC bus 13, and LPC slave device 9 and The LPC master device 14 communicates through the LPC bus 13 , and the monitor 11 is used to monitor the signals on the LPC bus 13 . When the monitor 11...

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Abstract

An embodiment of the invention provides an LPC (Low Pin Count) slave device and an LPC master device verification method. The LPC salve device comprises a driver and a monitor; the monitor is used formonitoring a signal on an LPC bus; the LPC bus is connected with the LPC slave device and an LPC master device; when the monitor monitors a starting signal on the LPC bus, a first signal and a secondsignal are collected in sequence from the LPC bus, and according to the first signal and the second signal, the second signal is determined as a writing command or a reading command; if the second signal is the writing command, the monitor collects data from the LPC bus; and if the second signal is the reading command, the driver sends the data to the LPC bus. The starting signal, sent by the LPCmaster device, on the bus is monitored through the LPC slave device; and a multiplexed signal, sent by the LPC master device, on the bus is collected according to the starting signal, so that a verification model capable of verifying the functions of the LPC master device is realized.

Description

technical field [0001] The embodiment of the present invention relates to the technical field of system-on-chip verification, and in particular to a method for verifying an LPC slave device and an LPC master device with a pin-less interface. Background technique [0002] The system on chip integrates many external device controllers, and each external device controller may have multiple functions, so it is necessary to verify the multiple functions of the external device controller. [0003] Loongson 3A8 SoC integrates an LPC main device, which has the functions of LPC input and output interface (IO), memory (MEMORY) and firmware memory (FIRMWARE MEMORY), in order to fully verify the LPC main device The correctness of the function requires a verification model with LPC's IO, MEMORY and FIRMWARE MEMORY functions. [0004] However, there is no verification model capable of verifying the function of the LPC master device in the prior art. Contents of the invention [0005] ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F21/44
CPCG06F21/445
Inventor 孙国庆
Owner LOONGSON TECH CORP