Dell PowerEdge R820 - Appendix C. System Board Block Diagram; Figure 14. R820 System Board Block Diagram

54 PowerEdge R820 Technical Guide
Appendix C. System board block diagram
Figure 14. R820 system board block diagram
CPU2
CPU1
South
Bridge
Super
VU2
Rear Video
SATA
CPLD
iDRAC
USB x2
USB
SATA (1)
Power
Supply 1
(750W/1100W )
x8
x8 x8
(
Port
3
A
, 3
B
)
(
Port
2
C
,
2D
)
QPI0
DMI 2GB/s
Port 0(DMI)
QPI1
PCIe x1
Port 8
(
Port
3
C
,
3D
)
256 MB
DDR3
DRAM
1067 MHz
PHY
(Gigabit)
To CP
2x30
TPM/
TCM
(
Port
1
A
,
1B
)
QPI1
DDR3 DDR3 DDR3 DDR3
DIMM1 DIMM1 DIMM1 DIMM1
DIMM2 DIMM2 DIMM2 DIMM2
DIMM3 DIMM3 DIMM3 DIMM3
QPI0
DMI
DDR3 DDR3 DDR3 DDR3
DIMM1 DIMM1 DIMM1 DIMM1
DIMM2 DIMM2 DIMM2 DIMM2
DIMM3 DIMM3 DIMM3 DIMM3
QPI 1.1
PCIe Gen3 x8
SAS
SAS (0)
Front Video
Video
UART
USB
USB
USB x2
DDR3
LifeCycle
Controller
4GB
eMMC
LPC
Serial Port
XBUS
SD1
Front
External
SD
MGMT
MAC
RJ45
TPM
SPI
System
Power
Connectors
x8
PCIe Gen3 x8
PCIe Gen3 x8
PCIe Gen3 x8
x8
x8
x8
x8
x8
PCIe Gen3 x8
PECI
PECI
PCIe Gen3 x8 PCIe Gen3 x8
Riser 2
(middle
Slot)
Power
Supply 2
(750W/1100W )
CH0
CH1 CH2
CH3
CH0
CH2
CH3
CH1
SMBUS
BP
Power
Conn1.
DVD
Power
Conn.
PCIe x1
LPC
LPC
I2C
(
Port
1A
, 1
B
)
(
Port
2
A
, 2
B
)
(
Port
2C
, 2
D
)
(
Port
3A
, 3
B
)
(
Port
3C
, 3
D
)
SD2
PCIe Gen3 x8
PCIe Gen3 x8
PEM
Power
Conn.
SMBUS
PCIe x1 port 5
+ port 6
PMBUS
Coin
Cell
SMBUS
SMBUS
MAC
NDC
Connector
NC_SI
USB2.0
Key
USB2.0
IDSDM
USB2.0
Front (2)
USB2.0
Rear (2)
USB x2
LPC
PCIe x1
Riser 1
(Top Slot)
x16
Riser 1
Bottom
Slot
NDC
connector
(
Port
2
A
, 2B
)
x8
Riser 3
(Bottom
Slot)
I
2
c
(
TCM
Only
)
PCIe Gen
2
x
2
QPI
High speed
Xcede
Connector
High speed
Xcede
Connector
QPI
Power
connector
12 VDC
Riser 2
Connector
(Top Slot)
Riser 3
(top Slot)
x16
Riser 2
(bottom
Slot)
PCIe Gen3 x8
DVD
Power
Conn.
BP
Power
Conn2.
CPU4 CPU3
QPI1 QPI0
QPI1QPI0
QPI QPI
QPI
J_BP_
SIG1
(BP
Signal
Conn)
J_BP_
SIG2
(BP
Signal
Conn)