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124 AMD Geode™ LX Processors Data Book
CPU Core Register Descriptions
33234H
5.5.2.15 Exception Unit (XC) Configuration MSR (XC_CONFIG_MSR)
XC_CONFIG_MSR allows the processor to be configured so that when the processor is in its HALT state, it can request
that its clocks be turned off. It also allows the processor to be configured so that the processor is suspended when a
PAUSE instruction is executed.
MSR Address 00001210h
Typ e R /W
Reset Value 00000000_00000000h
XC_CONFIG_MSR Register Map
63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32
RSVD
313029282726252423222120191817161514131211109876543210
RSVD
SUSPONPAUSE
SUSPONHLT
XC_CONFIG_MSR Bit Descriptions
Bit Name Description
63:2 RSVD Reserved.
1 SUSPONPAUSE Suspend on Pause. When set, if a pause instruction is executed, the processor is sus-
pended for the number of clocks specified in the PAUSEDLY field of
BC_CONFIG0_MSR (MSR 00001900h[27:24]). (Default = 0)
0 SUSPONHLT Suspend on Halt. When set, if the processor is halted, then it requests that its clocks
be turned off. (Default = 0)
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