Block Diagram - Intel D845PEBT2 Specification

1.1.4

Block Diagram

Figure 2 is a block diagram of the major functional areas of the Desktop Board D845PEBT2. See
Figure 4 on page 24 for USB port routing.
Secondary IDE
mPGA478
Processor Socket
Interface
4X AGP
Connector
(1.5 V only)
Two DIMM Banks
Primary/Secondary
SATA/SATA RAID
or IDE RAID
Three
IEEE 1394a-2000
Ports (Optional)
PCI Slot 1
PCI Slot 2
PCI Slot 3
PCI Slot 4
PCI Slot 5
= connector or socket
Primary/ UDMA 33 and
ATA-66/100
System Bus
(400/533 MHz)
AGP
Intel 82845PE
AHA
Memory Controller
Bus
Hub (MCH)
Memory Bus
SMBus
SATA/SATA RAID
or IDE RAID
Controller
FW323
IEEE 1394a-2000
Controller (Optional)
PCI Bus
SMBus
Hardware
Monitoring
and Fan
Control ASIC
Figure 2. Block Diagram
USB
Serial Port
Parallel Port
LPC Bus
I/O
PS/2 Mouse
Controller
PS/2 Keyboard
LPC
Bus
Intel 82802AB
Intel 82801DB
I/O Controller Hub
Firmware Hub
(ICH4)
Intel 845PE Chipset
CSMA/CD
Unit Interface
Physical
Layer
Interface
AC Link
SMBus
Front Left and Right Out
Center and LFE Out
Rear Left and Right Out
AD1980
Digital S/PDIF
Audio Codec
Optical S/PDIF
(Optional)
Line In
Mic In
CD-ROM
Line Out
AD1981B
Line In
Audio Codec
Mic In
(Optional)
CD-ROM
Product Description
Back Panel/
Front Panel
USB Ports
Diskette Drive
Connector
4 Mbit
(FWH)
LAN
Connector
CNR
Connector
(Optional)
OM15028
15