ALXD800EEXJ2VD AMD (ADVANCED MICRO DEVICES), ALXD800EEXJ2VD Datasheet - Page 646

• Manufacturer Part Number: ALXD800EEXJ2VD
• Manufacturer: AMD (ADVANCED MICRO DEVICES)

Specifications of ALXD800EEXJ2VD

• Operating Temperature (min): 0C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Compliant

8.3.4.7
Operation
Description
The RSM instruction restores the state of the processor from the System Management Mode (SMM) header, and then
jumps to the address indicated by the NEXT_IP field of the SMM header. Below is the format of the SMM header.
Flags Affected
All bits of the EFlags register is restored from the SMM header.
Exceptions
#UD
is not in DMM.
646
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9
IF (CPL<>0 OR (SMM_INST_EN=0 AND SMM=0 AND DMM=0))
ELSE
G
G
Opcode
0F AA
D
B
0 Av
0 Av
If current privilege level is not 0, or the SMM_INST_EN = 0 and if the processor is not in SMM and if the processor
RSM - Leave System Management Mode
#UD;
SMM_CTL <= SMM_HEADER[SMM_CTL];
SS.FLAGS <= SMM_HEADER[SS.FLAGS];
CPL <= SMM_HEADER[SS.DPL];
CS.LIMIT <= SMM_HEADER[CS.LIMIT];
CS.BASE <= SMM_HEADER[CS.BASE]
CS.SELECTOR <= SMM_HEADER[CS.SELECTOR];
CS.FLAGS <= SMM_HEADER[CS.FLAGS];
CR0 <= SMM_HEADER[CR0];
EFLAGS <= SMM_HEADER[EFLAGS];
IF (!DMM_CTL.DBG_AS_DMI)
IF (SMM_HEADER[N])
else
IF (SMM_HEADER[H])
ELSE
Instruction
RSM
DR7 <= SMM_HEADER[DR7];
SMM <= 1;
SMM <= 0;
HALT PROCESSOR;
JUMP to CS at OFFSET of SMM_HEADER[NEXT_IP];
0
0
0
0
33234C
CS_FLAGS
SS_FLAGS
1
1
DPL
DPL
1
1
1 Cf R
0
I/O SIZE
E W A
Clocks
36
CURRENT_IP
SMM_CTL
CS_BASE
I/O_DATA
NEXT_IP
EFlags
A
DR7
CR0
0
c
r
Description
Return from SMI
CS_LIMIT[19:0]
Code Segment Selector
I/O ADDRESS[15:0]
INDEX
SMM Flags
AMD Geode™ LX Processors Data Book
N
8
7
V
X
6
M H
5
4
S
3
TI
P
2
Instruction Set
1
I
RPL
c
0
w
-1C
-2C
-10
-14
-18
-20
-24
-28
-30
-34
-C
-4
-8