Intel C2518 FH8065501516710 Data Sheet
Product codes
FH8065501516710
Intel
®
Atom™ Processor C2000 Product Family for Microserver
September 2014
Datasheet, Vol. 2 of 3
Order Number: 330061-002US
317
Volume 2—SMBus 2.0 Unit 1 - Host—C2000 Product Family
Controller Characteristics and Operation
15.4.7.5
Clearing of Start Bit
Under certain conditions, the hardware clears the Start bit (MCTRL.SS).
The hardware clears this register for the following fatal error scenarios:
• The transaction is unsuccessful on the final retry (if enabled), including collisions.
• The hardware receives unsuccessful completion on internal IOSF.
• The hardware receives unsuccessful completion on internal IOSF.
The hardware clears this register for the following non-fatal scenario:
• Master descriptor Stop-on-Error (SOE) bit was set and the transaction was
unsuccessful.
The firmware clears the Start bit when it kills a master transaction:
1. The firmware clears MCTRL.SS.
2. The firmware sets GCTRL.KILL.
3. The firmware polls MSTS.IP; transaction is killed when bit is detected as cleared.
2. The firmware sets GCTRL.KILL.
3. The firmware polls MSTS.IP; transaction is killed when bit is detected as cleared.