15
Chapter 1: Introduction
Figure 1-5. Intel C621 Chipset: System Block Diagram
Note:
This is a general block diagram and may not exactly represent the features on your
motherboard. See the System Specifications appendix for the actual specifications of your
motherboard.
SPI
LAN3
RGRMII
PCI-E X1
USB 2.0
#12 USB2.0
SFI
PCH
6.0 Gb/S
USB 2.0
US
B
#1
#0
#5
#4
RTL8211F
#3
#2
RJ45
ESPI
Temp Sensor
NCT7718W
USB 3.0
SPI
AST2500
BMC
#5
RMII/NCSI
COM1
VGA CONN
BMC Boot Flash
DDR4
P1
P0
P0
UPI
PCI-E X16
DMI
3
SXB1 (RAID ADP
)
PCI-E X8
PCI-E X16
2
MI
D
2
I
M
D
SIOM
PCI-E X8
PCI-E X16
PCI-E X16
#1C #2 #3
#1 #3A
#6
#7
#8
#9
UPI
#2
SFI
UPLINK PCI-E X
8 or X1
#11
SATA-DO
M
#10
NCSI
Debug Card
TPM HEADER
BIOS
SW
SPI
#3C
NCSI
master
165W/205W
2133/266
6
DDR4
DIMMD1
DIMMA2
DIMMA1
DIMMB1
DIMMC1
DIMMD2
DIMME1
DIMMF1
SAT
A
2133/266
6
DIMMG2
DIMMG1
DIMMH1
DIMMK1
DIMMK2
DIMML1
DIMMM1
DDR4
DIMMJ1
P1
SXB3_1 (Rear Left)
SXB3_2 (Rear Left)
SXB4 (Rear Right)
SXB2 (GPU or NVMe ADP)
PCI-EX1
5+1 PHASE
VR13
VCCP0
UPI 10.4/1.2G
165W/205W
5+1 PHASE
VR13
VCCP1
CPU1
CPU2
Fan Speed
Control
Front Panel System PWR
#4