參數(shù)資料
型號(hào)： DNC3X3425
英文描述： DNC3X3425 Quad 10/100 Mbits/s Ethernet Transceiver Macrocell
中文描述： DNC3X3425四10/100 Mbits /秒以太網(wǎng)收發(fā)器宏單元
文件頁(yè)數(shù)： 22/32頁(yè)
文件大?。?/td> 757K
代理商： DNC3X3425
22
DNC3X3425
Quad 10/100 Mbits/s Ethernet Transceiver Macrocell
Advance Data Sheet
March 2000
4
Register Information
(continued)
Table 15. MR2, MR3—PHY Identification Registers (1 and 2) Bit Descriptions
* The format for the bit descriptions is as follows: the first number is the register number, the second number is the bit position in the register.
R = read.
Table 16. MR4—Autonegotiation Advertisement Register Bit Descriptions
* The format for the bit descriptions is as follows: the first number is the register number, the second number is the bit position in the register.
R = read, W = write.
Bit
*
Type
R
Description
2.15:0 (OUI[3:18])
Organizationally Unique Identifier.
The third through the twenty-fourth bit of the
OUI assigned to the PHY manufacturer by the IEEEare to be placed in bits
2.15:0 and 3.15:10. This value is programmable.
Organizationally Unique Identifier.
The remaining 6 bits of the OUI. The value
for bits 24:19 is programmable.
Model Number.
6-bit model number of the device. The model number is
programmable.
Revision Number.
The value of the present revision number. The version num-
ber is programmable.
3.15:10 (OUI[19:24])
R
3.9:4 (MODEL[5:0])
R
3.3:0 (VERSION[3:0])
R
Bit
*
Type
R/W
Name/Description
4.15 (NEXT_PAGE)
Next Page.
The next page function is activated by setting this bit to a 1. This will
allow the exchange of additional data. Data is carried by optional next pages of
information.
Acknowledge.
This bit is the acknowledge bit from the link code word.
Remote Fault.
When set to 1, the DNC3X3425 indicates to the link partner a
remote fault condition.
Reserved.
Pause.
When set to a 1, it indicates that the DNC3X3625 wishes to exchange flow
control information with its link partner.
100Base-T4.
This bit should always be set to 0.
100Base-TX Full Duplex.
If written to 1, autonegotiation will advertise that the
DNC3X3425 is capable of 100Base-TX full-duplex operation.
100Base-TX.
If written to 1, autonegotiation will advertise that the DNC3X3425 is
capable of 100Base-TX operation.
10Base-T Full Duplex.
If written to 1, autonegotiation will advertise that the
DNC3X3425 is capable of 10Base-T full-duplex operation.
10Base-T.
If written to 1, autonegotiation will advertise that the DNC3X343x3425
is capable of 10Base-T operation.
Selector Field
. Reset with the value 00001 for IEEE802.3.
4.14 (ACK)
4.13 (REM_FAULT)
R/W
R/W
4.12:11
4.10 (PAUSE)
R/W
R/W
4.9 (100BASET4)
4.8 (100BASET_FD)
R/W
R/W
4.7 (100BASETX)
R/W
4.6 (10BASET_FD)
R/W
4.5 (10BASET)
R/W
4.4:0 (SELECT)
R/W
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