1-8
A1SA2-2750/2550F User’s Manual
System Block Diagram
Note:
This is a general block diagram and may not exactly represent
the features on your motherboard. See the Motherboard Features
pages for the actual specifications of each motherboard.
A1SA2-2750/2550F motherboard Block Diagram
FLASH 64Mbit
SPI
CHA
CHA
DIMMB1
DIMMB2
DIMMA1
DIMMA2
LPC
LPC
AVOTON SOC
PEG [0]
AST2400
PCIE x 1
COM2
TX/RX
(debug)
0Ohm
NI
FLASH 64Mbit
VGA1
SPI
COM1
LPC
AST2400
TX/RX
(debug)
PCIE x 1
0Ohm
NI
COM/USB/VGA SWITCH
KVM CONNECTER
(VGA+USBx2+COM)
VGA
VGA
VGA2
USB [0:1]
USB [2:3]
USB [0:1]
USB [2:3]
LAN SWITCH
RTL8363SB-CG
USBx2
USBx2
SATA 3.0
SATA 3.0
CHA
CHA
VLP DDR
3
SGMII
DIMMB1
DIMMB2
SGMII
DIMMA1
DIMMA2
MDI
SRGMII
REAR
LAN
VLP DDR
3
VLP DDR
3
VLP DDR
3
VLP DDR
3
VLP DDR
3
VLP DDR
3
VLP DDR
3
SGMII x 4
88E1543
SGMII x 4
88E1543
LPC
AVOTON SOC
PEG [0]
RTL8211E
SGMII
CPU1
CPU2
SATA 3.
0
SATA 3.
0
SATA 3.
0
SATA 3.
0
SATA GEN3
SATA GEN3
Pericom
6812
SATA
re-driver
Pericom
6812
SATA
re-driver
HDD Backplane
LAN1 LAN2
REAR REAR
CHB
CHB
UART1
UART2
CHB
CHB
REAR REAR
LAN3 LAN4
UART1
UART2