Rainbow-electronics W90P710CDG Bedienungsanleitung PDF herunterladen (Seite 120)

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W90P710CD/W90P710CDG

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Transmit Descriptor Link List Start Address Register (TXDLSA)

The Tx descriptor defined in EMC is a link-list data structure. The TXDLSA keeps the starting address

of this link-list. In other words, the TXDLSA keeps the starting address of the 1

Tx descriptor. S/W

must configure TXDLSA before enable bit TXON of MCMDR register.

TXDLSA 0xFFF0_3088 R/W

Transmit Descriptor Link List Start

Address Register

0xFFFF_FFFC

31 30 29 28 27 26 25 24

TXDLSA

23 22 21 20 19 18 17 16

TXDLSA

15 14 13 12 11 10 9 8

TXDLSA

7 6 5 4 3 2 1 0

TXDLSA

BITS DESCRIPTIONS

[31:0] TXDLSA

The TXDLSA(Transmit Descriptor Link-List Start Address) keeps

the start address of transmit descriptor link-list. If the S/W enables the

bit TXON of MCMDR register, the content of TXDLSA will be loaded

into the current transmit descriptor start address register (CTXDSA).

The TXDLSA doesn’t be updated by EMC. During the operation, EMC

will ignore the bits [1:0] of TXDLSA. This means that each Tx

descriptor always must locate at word boundary memory address.

Receive Descriptor Link List Start Address Register (RXDLSA)

The Rx descriptor defined in EMC is a link-list data structure. The RXDLSA keeps the starting address

of this link-list. In other words, the RXDLSA keeps the starting address of the 1

Rx descriptor. S/W

must configure RXDLSA before enable bit RXON of MCMDR register.

RXDLSA 0xFFF0_308C R/W

Receive Descriptor Link List Start

Address Register

0xFFFF_FFFC

1 2 ... 115 116 117 118 119 120 121 122 123 124 125 ... 551 552

Rainbow-electronics W90P710CDG Bedienungsanleitung Seite 120

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