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VPP_AB (2.575)
VDDQ_AB (1.2)
B1
VTT_M_AB (0.6)
A1
LAN1
RJ45
Marvell 88E1512
1G Base-T
LAN2
RJ45
Marvell 88E1512
1G Base-T
LAN3
RJ45
RTL8211E-VB-CG
DDR4
SPI
BMC Boot Flash
SPI
BIOS
VGA
Connector
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.
VCCP0
VR13
E1
4+1 PHASE
140W
D1
CPU 1
#2
SLOT1
PCI-E x16 G3
SXB2
PCI-E x4 G3
UPLINK
SATA x1 G3
#8(Flexible IO)
SFI
#0
SFI
#1
RGMII
RMII/NCSI
NCSI
PCI-E X1 G2
#5
BMC
USB 2.0
#2 USB2.0
AST2500
ESPI
LBG-1G X1 UPLINK (15W)
Temp Sensor
COM1
TPM HEADER
Debug Card
NCT7718W
Connector
FRONT PANEL
15
VCCP1
VR13
4+1 PHASE
UPI
140W
10.4 GT
P0
P1
UPI
CPU 2
P1
P0
UPI
#3
DMI3
DMI3
DMI3
6.0 Gb/S
I-SATA
#7
#6
PCH
#0
USB 2.0
USB
USB 3.0
SPI
BIOS
SYSTEM POWER
FAN SPEED
CTRL
Chapter 1: Introduction
E1
D1
B1
A1
#0~#5
#1
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