Intel E7-8880 v2 CM8063601271810 Manuale Utente
Codici prodotto
CM8063601271810
Integrated I/O (IIO) Configuration Registers
266
Intel
®
Xeon
®
Processor E7-2800/4800/8800 v2 Product Family
Datasheet Volume Two: Functional Description, February 2014
14.2.87 DMICTRL
2:0
RWS
RO (Device 0
Function 0)
0x4
0x0 (Device 0
Function 0)
iou_bifurcation_control:
To select a IOU bifurcation, software sets this field and then
either
a) sets bit 3 in this register to initiate training OR
b) resets the entire Intel Xeon processor E7-2800/4800/8800
a) sets bit 3 in this register to initiate training OR
b) resets the entire Intel Xeon processor E7-2800/4800/8800
v2 product family Product Family and on exit from that reset,
CPU will bifurcate the ports per the setting in this field.
For Device 2 and Device 3 Function 0:
000: x4x4x4x4 (operate lanes 15:12 as x4, 11:8 as x4, 7:4 as
000: x4x4x4x4 (operate lanes 15:12 as x4, 11:8 as x4, 7:4 as
x4 and 3:0 as x4)
001: x4x4x8 (operate lanes 15:12 as x4, 11:8 as x4 and 7:0 as
001: x4x4x8 (operate lanes 15:12 as x4, 11:8 as x4 and 7:0 as
x8)
010: x8x4x4 (operate lanes 15:8 as x8, 7:4 as x4 and 3:0 as
010: x8x4x4 (operate lanes 15:8 as x8, 7:4 as x4 and 3:0 as
x4)
011: x8x8 (operate lanes 15:8 as x8, 7:0 as x8)
100: x16
others: Reserved
011: x8x8 (operate lanes 15:8 as x8, 7:0 as x8)
100: x16
others: Reserved
For Device 0 Function 0, read only.
Type:
CFG
PortID:
N/A
Bus:
0
Device:
0Function:0 (DMI2 Mode)
Offset:
0x1a0
Bit
Attr
Default
Description
63:2
RO
0x0
rsvd:
1:1
RW
0x1
auto_complete_pm:
This bit, if set, enables the DMI port to automatically complete PM message
handshakes by generating an Ack_Sx or Rst_Warn_Ack message down DMI
for the following DMI messages received:
Go_S0
Go_S1_RW
Go_S1_Temp
Go_S1_Final
Go_S3
Go_S4
Go_S5
Rst_Warn
Go_S0
Go_S1_RW
Go_S1_Temp
Go_S1_Final
Go_S3
Go_S4
Go_S5
Rst_Warn
Notes:
This is used by PCU microcode to indicate periods of time when it is not ready
This is used by PCU microcode to indicate periods of time when it is not ready
to accept messages and there is a risk the messages will be lost.
Type:
CFG
PortID:
N/A
Bus:
0
Device:
0Function:0
Bus:
0
Device:
2Function:0
Bus:
0
Device:
3Function:0
Offset:
0x190
Bit
Attr
Default
Description