After first reset
Posted: Sat Feb 20, 2016 10:24 pm
Before press Power Button
When Ec Provided by power it active the analog and digitalpower Section
By default it genrate clock on clock pins (32.768 khz). IfSusclk is used then it provided by intel chipset by rtc section activity.
When Clock is on Clock then Ec reset is take place. Thisdelay must be take place after clock generation. That is because use of RCcircuit used on ECRST#.
After ECRST# EC outputclock on EC Bios pin no.6 that is usually 12mhz to 30mhz you can check it byremoving bios chip and than check pin6 for clock with DSO. This is the signalwhich make bios active to input and output data and time selection for chipselect signal to read write opration.
When bios is mounted 3.3v must be there on pin8, pin7andpin3 . Pin 8 is for vcc power for bios chip. Pin 7 for hold for pauseoperations when use low buffer area. Pin 3 is for write protection for device.
When clock present on pin6. EC control CS# signal for Datainput and output operations
When CS# is High chip is not select for Data input andoutput when CS# is in low then EC Input and output made. Ec input data forcertain address to read from pin5 andoutput
Will make from pin2 . Data is generally used in 8 bit.
When Ec Provided by power it active the analog and digitalpower Section
When bios is mounted 3.3v must be there on pin8, pin7andpin3 . Pin 8 is for vcc power for bios chip. Pin 7 for hold for pauseoperations when use low buffer area. Pin 3 is for write protection for device.
When clock present on pin6. EC control CS# signal for Datainput and output operations
When CS# is High chip is not select for Data input andoutput when CS# is in low then EC Input and output made. Ec input data forcertain address to read from pin5 andoutput
Will make from pin2 . Data is generally used in 8 bit.