21154 PCI-to-PCI Bridge
Figure 2. 21154 with Option Cards
LAN
Chip
LAN
Chip
LAN
Chip
LAN
Chip
S
21154
P
64-Bit PCI Bus
64-Bit PCI Bus
Note:
P – Primary Interface
S – Secondary Interface
LJ-05429.AI4
1.1
Architecture
The 21154 internal architecture consists of the following major functions:
• PCI interface control logic for the primary and secondary PCI interfaces
• Data path and data path control logic
• Configuration register and configuration control logic
• Secondary bus arbiter
Figure 3 shows the major functional blocks of the 21154.
Datasheet
3
INTEL [ INTEL ]
