Block Diagram - Intel D845EPI Specification

1.2 Block Diagram

Figure 2 is a block diagram of the major functional areas of the board.
= connector or socket
Primary/
Secondary IDE
mPGA478
Processor Socket
4X AGP Connector
(1.5 V only)
DIMM Banks (2)
PCI Slot 1
PCI Slot 2
PCI Slot 3
UDMA 33 and
ATA-66/100
System Bus
(400/533 MHz)
Intel 82845E
AHA
Memory Controller
Bus
Hub (MCH)
AGP
Interface
Memory Bus
SMBus
PCI Bus
SMBus
Figure 2. Block Diagram
USB
LPC Bus
I/O
Controller
SMBus
LPC
Bus
Intel 82801DB
I/O Controller Hub
(ICH4)
CSMA/CD
Unit
Interface
Physical
Layer
Interface
AC Link
(Optional)
Realtek
ALC202A
Audio Codec
Product Description
Back Panel /
Front Panel
USB Ports
Serial Ports
Parallel Port
PS/2 Mouse
PS/2 Keyboard
Diskette Drive
Connector
4 Mbit
Firmware Hub
(FWH)
Intel 845E Chipset
LAN
Connector
(Optional)
Line In
Line Out
Mic In
CD-ROM
OM16270
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