AMD Richland

10 AMD “RICHLAND” APU | HOT CHIPS 25 | PRAVEEN DONGARA | AUGUST 2013
AMD TURBO CORE CONTROL LOOPS
PUTTING THE PIECES TOGETHER
Cac
Power Calculation
Freq
V
T
calc
Temp. Calculation
Temp.
from other
TEs
P
calculated
T
calc
<>
Max
Temp.?
Limit
Pboost0
P0
P1
P2
P3
Pmin
..
.
Pboost1
T
calculated
Check
against
current (EDC/TDC)
And other
limits
If limits
encroached,
throttle F and V
New Operating F, V
Loop executed
at a specific
interval
Control Loop (similar to above)
Control Loop (similar to above)