Technical information

7-3
Register Descriptions
(E)EPROM R/W
Internal registers
External registers
0x00000
0x40000
(64KByte words (256KBytes))
(~16K words (~64KBytes))
(16K words (64KBytes))
0x50000
0x60000
0x7FFFF
(PCI clock domain)
(PCI clock domain)
Reserved
Memory Mapped and Indirect I/O Mapped
Memory/Config/
512K PCI Address Map
64K Internal Registers Address Map
0x0000
PCI Configuration
Functional registers
0x0040
0x0100
0x8000
0xA000
MAC registers
0xC000
0xFFFF
0x5000
Rx Frame Processor
Instruction memory
Tx Frame Processor
Instruction memory
0x6000
0x7000
Statistic register file
Address filtering
0x4000
Physical (MII) registers
up to 32 devices,
256-byte each
Reserved
I/O direct access
PCI extra registers
Ethernet
PCI
0x0070
Ethernet extra registers
0x2000
Serial EPROM
0x1000
(includes external
PHY MII registers)
Expansion ROM space
Memory and Indirect I/O access
Ethernet FIFO
0xE000
header registers
Figure 7-1. AIC-6915 PCI Address Map
Access