The Low Speed Signals
Power OK (PWROK) AndReset (RESET#)
PWROK used with RESET# indicates to HyperTransport devices whether a Cold or Warm Reset is in progress. Which system logic component is responsible for managing the PWROK and RESET# signals is beyond the scope of the HyperTransport specification, but timing and use of the signals are defined. The basic use of the signals includes:
At power up, PWROK is asserted by system logic when it can be guaranteed that system power and clocks related to HyperTransport are within proper limits.
RESET# is asserted by system logic to indicate that a reset is required. The state of PWROK when RESET# is seen asserted indicates the type of reset to be performed. PWROK and RESET# both asserted is a warm reset; ...
Get HyperTransport™ System Architecture now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.