Rainbow Electronics W90P710CDG User Manual
Page 120
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
st
Tx descriptor. S/W
must configure TXDLSA before enable bit TXON of MCMDR register.
Register
Address
R/W
Description
Reset Value
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
st
Rx descriptor. S/W
must configure RXDLSA before enable bit RXON of MCMDR register.
REGISTER
ADDRESS
R/W
DESCRIPTION
RESET VALUE
RXDLSA 0xFFF0_308C R/W
Receive Descriptor Link List Start
Address Register
0xFFFF_FFFC