HH80556KH0364M S LAGD Intel, HH80556KH0364M S LAGD Datasheet - Page 190

• Manufacturer Part Number: HH80556KH0364M S LAGD
• Manufacturer: Intel

Specifications of HH80556KH0364M S LAGD

• Rad Hardened: No
• Lead Free Status / RoHS Status: Compliant

3.9.2.3
Intel
Datasheet
190
®
5100 Memory Controller Hub Chipset
1. The Intel
THRTHIGH: Thermal Throttle High Register
Device:
Function:
Offset:
Device:
Function:
Offset:
15:9
7:0
7:0
Bit
Bit
controlling open loop throttling.
8
Attr
Attr
RW
RO
RO
RV
®
5100 MCH Chipset will use an internal signal called GBLTHRT* from its combinatorial cluster for
16
1
6Ah, 68h
16
1
65h
Default
Default
0h
0h
0h
0h
Reserved
GBLTHRT: Global Activation Throttle
This field is set by the Intel
Activation throttling based on the number of activations sampled in the global
window.
If the number of activations in the global window (16384x1344 cycles) exceeds the
number indicated by the GBLACTLM field in this register, then THRTSTS.GBLTHRT
bit is set to enable the Global activation throttling logic.
Global activation throttling logic will remain active until 16 (or 2) global throttling
windows in a row have gone by without any rank exceeding the GBLACT.GBLACTLM
register at which point this register field will be reset.
THRMTHRT: Thermal Throttle Value
This field holds the current activation throttling value based on the throttling
algorithm.
0: No throttling (unlimited activation)
1: 4 activations per rank per activation window.
2: 8 activations per rank per activation window
168: 672 activations per rank per activation window
This field will be set by the Intel
vary between THRTLOW and THRTHIGH registers based on the throttling.
THRTHIGHLM: Thermal Throttle High Limit
A throttling level that is applied when the THRTSTS.GBLTHRT* bit is set by the
Global Throttling Window logic.
The maximum value this field can be initialized by software is 168 (decimal). This
corresponds to 672 activations per throttling window and gives 100% BW.
The granularity of this field is 4 activations.
0: No throttling (unlimited activation)
1: 4 activations per rank per activation window
2: 8 activations per rank per activation window
168: 672 activations per rank per activation window
If Software sets this value greater than 168, the chipset will cap the THRTHIGHLM
field to 168. This field should be less than or equal to the THRTLOW.THRTLOWLM.
®
5100 MCH Chipset to indicate the start of the Global
Intel
®
5100 MCH Chipset and the value of this field will
Description
Description
®
5100 MCH Chipset—Register Description
1
Order Number: 318378-005US
July 2009