Broadcom BCM5722 - Figure 11: ASF System Architecture

BCM5722 Programmer’s Guide
10/15/07
Broadcom Corporation
Page 27 System Management Bus Document 5722-PG101-R
SYSTEM MANAGEMENT BUS
Figure 11 shows the architecture of the SMBus and the location of the ASF in the system.
Figure 11: ASF System Architecture
Processor Local Bus/Front Side
PCI Bus
BCM57XX
(ASF Enabled)
Legacy Alert
Devices
Alert ASF
Devices
Remote
Control
Devices
R Pullup R Pullup
Vbus
SMB_Clock pin
SMBCLK
S
MBDAT
SMB_Data pin
Filter
RJ45
Cat5
Memory
Bus
Host PCI
Bridge
SMBus
Controller
PCI/ISA
Bridge
Memory
(SDRAM)
Host
CPU
ISA Bus
North Bridge
Sourth Bridge
Four Rx/Tx Pai
rs