LAN83C175 Datasheet, PDF (27/92 Pages) SMSC Corporation – Ethernet CARDBUS Integrated Controller With Modem Support

3
2
1
0
Little Endian (PCI) Bus
PCI Bridge Action
0
1
2
7
07
07
Control Register dword transfer:
3
2
1
3
07
Big Endian (PowerPC) Bus
0 Byte Transfer
0
Little Endian (PCI) Bus
PCI Bridge Action
0
7
1
0 15
2
3
8 23
16 31
Big Endian (PowerPC) Bus
24 Byte Transfer
Descriptor/Fragment list dword transfer:
31
3
2
1
0
1
2
31
0
0
Little Endian (PCI) Bus
PCI Bridge Action plus
internal SMC91C120 swap
3
Big Endian (PowerPC) Bus
0 Byte Transfer
5
FIGURE 5 - LITTLE ENDIAN/BIG ENDIAN BYTE TRANSFER
The number in the box refers to the address of
the byte. The numbers above and below the
boxes refer to the bit number (the bit
ordering increases from LSB to MSB for both
formats, although some other documents
choose to label them differently).
27