AC1040F Datasheet, PDF (20/37 Pages) List of Unclassifed Manufacturers – Ultra Low Power 10/100 Quad RMII Ethernet Transceiver

AC104QF
Ultra Low Power 10/100 Quad RMII Ethernet Transceiver
Register 1: Status Register
Reg.bit
1.15
1.14
1.13
1.12
1.11
1.[10:7]
1.6
1.5
1.4
1.3
1.2
1.1
1.0
Name
100Base-T4
100Base-TX
Full Duplex
100Base-TX
Half Duplex
10Base-T Full
Duplex
10Base-T Half
Duplex
Reserved
MF Preamble
Suppression
ANeg Complete
Remote Fault
ANeg Ability
Link Status
Jabber Detect
Extended
Capability
Description
Permanently tied to zero indicates no 100BaseT4 capability.
1 = 100BaseTX full duplex capable.
0 = Not 100BaseTX full duplex capable.
1 = 100BaseTX half duplex capable.
0 = Not TX half-duplex capable.
1 = 10BaseT full duplexcapable.
0 = Not 10BaseT full duplex capable.
1 = 10BaseT half duplex capable.
0 = Not 10BaseT half duplex capable.
The Phy is able to perform management transaction without
MDIO preamble. The management interface needs minimum of
32 bits of preamble after reset.
1 = Auto-Negotiate process completed. Reg. 4, 5, 6 are valid
after this bit is set.
0 = Auto-negotiate process not completed.
1 = Remote fault condition detected.
0 = No remote fault.
This bit will remain set until it is cleared by reading register 1.
1 = Able to perform Auto-Negotiation function, default value
determined by ANEGA pin.
0 = Unable to perform Auto-Negotiation function.
1 = Link is established. If link fails, this bit will be cleared and
remain at 0 until register is read again.
0 = Link has gone down.
1 = Jabber condition detect.
0 = No Jabber condition detected.
1 = Extended register capable. This bit is tied permanently to
one.
* Refer to Mode Table
Mode
RO
RO
RO
RO
RO
RO
RO
Default
0
* See Note
* See Note
* See Note
* See Note
0000
1
RO
0
RO/LH
0
RO
ANEGA
RO/LL
0
RO/LH
0
RO
1
Register 2: PHY Identifier 1 Register
Reg.bit
2.[15:0]
Name
OUI*
Description
Composed of the 3rd through 18th bits of the Organizationally
Unique Identifier (OUI), respectively.
* = Based on an OUI is 0010A9 (Hex)
Register 3: PHY Identifier 2 Register
Reg.bit
3.[15:10]
3.[9:4]
3.[3:0]
Name
OUI
Model
Number
Revision
Number
Description
Assigned to the 19th through 24th bits of the OUI.
Six bit manufacturer’s model number. 101 is encoded as
010001.
Four-bit manufacturer’s revision number. 0001 stands for Rev.
B, etc.
* = Based on an OUI of 0010A9 (Hex)
Mode
RO
Mode
RO
RO
RO
Default
0022(H)
Default
010101
010100
0001
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Document Revision 4.0
Page 20 of 37