Specifications

ASIX ELECTRONICS CORPORATION
31
AX88772
USB to 10/100 Fast Ethernet/HomePNA Controller
7.1.3 PHY Identifier Register 1
Address 02h
Bit Bit Name Default Description
15:0 OUI_MSB 003B hex, RO / PS OUI most significant bits:
Bits 3 to 18 of the OUI are mapped to bits 15 to 0 of this register
respectively. The most significant two bits of the OUI are ignored.
7.1.4 PHY Identifier Register 2
Address 03h
Bit Bit Name Default Description
15:10 OUI_LSB 00_0110, RO / PS OUI least significant bits:
Bits 19 to 24 of the OUI are mapped to bits 15 to 10 of this register
respectively.
9:4 VNDR_MDL 00_0001, RO / PS Vendor model number.
3:0 MDL_REV 0001, RO / PS Model revision number.
7.1.5 Auto Negotiation Advertisement Register (ANAR)
Address 04h
Bit Bit Name Default Description
15 NP 0, RO / PS Next page indication:
0 = No next page available
The PHY does not support the next page function.
14 ACK 0, RO Acknowledgement:
1 = Link partner ability data reception acknowledged
0 = Not acknowledged
13 RF 0, RW Remote fault:
1 = Fault condition detected and advertised
0 = No fault detected
12:11 Reserved X, RW Reserved:
Write as 0, read as “don’t care”.
10 Pause 0, RW Pause:
1 = Pause operation enabled for full-duplex links
0 = Pause operation not enabled
9 T4 0, RO/PS 100BASE-T4 support:
0 = 100BASE-T4 not supported
8 TX_FD 1, RW 100BASE-TX full-duplex support:
1 = 100BASE-TX full-duplex supported by this device
0 = 100BASE-TX full-duplex not supported by this device
7 TX_HD 1, RW 100BASE-TX half-duplex support:
1 = 100BASE-TX half-duplex supported by this device
0 = 100BASE-TX half-duplex not supported by this device
6 10_FD 1, RW 10BASE-T full-duplex support:
1 = 10BASE-T full-duplex supported by this PHY
0 = 10BASE-T full-duplex not supported by this PHY
5 10_HD 1, RW 10BASE-T half-duplex support:
1 = 10BASE-T half-duplex supported by this PHY
0 = 10BASE-T half-duplex not supported by this PHY
4:0 Selector 0_0001, RW Protocol selection bits:
These bits contain the binary encoded protocol selector supported
by this PHY. [0 0001] indicates that this PHY supports IEEE
802.3u CSMA/CD.