Method for implementing standby, hibernation and wake-up on domestic FeiTeng processor
A processor, a domestic technology, applied in the direction of program control devices, etc., can solve the problem that the Phytium processor does not have a set of success, and achieve the effect of low BOM cost, simple design, and easy maintenance
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[0014] Such as figure 1 As shown, the Phytium processor communicates with the programmable control chip through two sets of SMBUS, one master and one slave. Since the levels on both sides are inconsistent, a level conversion circuit needs to be added to the bus. The programmable control chip controls the power state through the custom GPIO, and the custom GPIO includes "PM_SLP_S5#", "PM_SLP_S3#", "SYSTEM_RESET#".
[0015] The standby and wake-up operation process is as follows:
[0016] (1), the CPU writes the current information into the memory and writes the status flag to the BIOS;
[0017] (2), CPU writes to the programmable control chip and writes to the standby (S3) state;
[0018] (3) The programmable control chip pulls down the "EC_SLP_S3#" signal to turn off all power supplies except the memory;
[0019] (4) The programmable control chip monitors the wake-up operation, and if the wake-up operation is monitored, perform step 5;
[0020] (5) The programmable contro...
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