LAN9211 datasheet(35/147 Pages) SMSC

35 / 147 page

High-Performance Small Form Factor Single-Chip Ethernet Controller with HP Auto-MDIX Support

Datasheet

SMSC LAN9211

Revision 2.9 (03-01-12)

DATASHEET

Figure 3.9 FIFO Access Byte Ordering

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)

A[1] = 0

A[1] = 1

MSB

LSB

HOST DATA BUS

INTERNAL FIFO ORDER

A[1] = 0

A[1] = 1

MSB

LSB

HOST DATA BUS

INTERNAL FIFO ORDER

WORD_SWAP != FFFF_FFFFh

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)

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)

A[1] = 0

A[1] = 1

MSB

LSB

HOST DATA BUS

INTERNAL FIFO ORDER

A[1] = 0

A[1] = 1

MSB

LSB

HOST DATA BUS

INTERNAL FIFO ORDER

WORD_SWAP = FFFF_FFFFh

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)

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