LAN9211_12 Datasheet, PDF (35/147 Pages) SMSC Corporation – High-Performance Small Form Factor Single-Chip Ethernet Controller with HP Auto-MDIX Support

High-Performance Small Form Factor Single-Chip Ethernet Controller with HP Auto-MDIX Support
Datasheet
WORD_SWAP != FFFF_FFFFh
BIG ENDIAN
(FPORTEND = 1 for Data FIFO port access on addresses 00h-3Ch)
AND/OR (FSELEND = 1 for Data FIFO direct access when FIFO_SEL=1)
INTERNAL FIFO ORDER
MSB
31
24 23
16 15
LSB
87
0
LITTLE ENDIAN
(FPORTEND = 0 for Data FIFO port access on addresses 00h-3Ch)
AND/OR (FSELEND = 0 for Data FIFO direct access when FIFO_SEL=1)
INTERNAL FIFO ORDER
MSB
31
24 23
16 15
LSB
87
0
3
2
1
0
3
2
1
0
A[1] = 1
0
1
A[1] = 0
2
3
15
87
0
HOST DATA BUS
A[1] = 1
3
2
A[1] = 0
1
0
15
87
0
HOST DATA BUS
WORD_SWAP = FFFF_FFFFh
BIG ENDIAN
(FPORTEND = 1 for Data FIFO port access on addresses 00h-3Ch)
AND/OR (FSELEND = 1 for Data FIFO direct access when FIFO_SEL=1)
INTERNAL FIFO ORDER
MSB
31
24 23
16 15
LSB
87
0
LITTLE ENDIAN
(FPORTEND = 0 for Data FIFO port access on addresses 00h-3Ch)
AND/OR (FSELEND = 0 for Data FIFO direct access when FIFO_SEL=1)
INTERNAL FIFO ORDER
MSB
31
24 23
16 15
LSB
87
0
3
2
1
0
3
2
1
0
A[1] = 1
2
3
A[1] = 1
1
0
A[1] = 0
0
1
15
87
0
HOST DATA BUS
A[1] = 0
3
2
15
87
0
HOST DATA BUS
Figure 3.9 FIFO Access Byte Ordering
SMSC LAN9211
35
DATASHEET
Revision 2.9 (03-01-12)