Figure 11: Asf System Architecture - Broadcom BCM5722 Programmer's Manual

BCM5722
S M
YSTEM ANAGEMENT
Figure 11 shows the architecture of the SMBus and the location of the ASF in the system.
Vbus
R Pullup R Pullup
SMBCLK
SMBDAT
ISA Bus
Sourth Bridge
Page 27 System Management Bus
B
US
Remote
Alert ASF
Control
Devices
Devices
SMBus
Controller
PCI/ISA
Bridge
Host
CPU
Processor Local Bus/Front Side

Figure 11: ASF System Architecture

Bro adco m C orp or atio n
Cat5
RJ45
Filter
BCM57XX
(ASF Enabled)
Legacy Alert
Devices
PCI Bus
Memory
Memory
Bus
(SDRAM)
Programmer's Guide
10/15/07
Four Rx/Tx Pairs
SMB_Clock pin
SMB_Data pin
North Bridge
Host PCI
Bridge
Document 5722-PG101-R