AX88772 ASIX [ASIX Electronics Corporation], AX88772 Datasheet - Page 28

• Manufacturer Part Number: AX88772
• Description: USB to 10/100 Fast Ethernet/HomePNA Controller
• Manufacturer: ASIX [ASIX Electronics Corporation]

7.0 Embedded Ethernet Phy Register Description
7.1 Detailed Register Description
The following abbreviations apply to following sections for detailed register description.
Reset value:
Access type:
Attribute:
7.1.1 Basic Mode Control Register (BMCR)
Address 00h
Bit
15
14
13
12
1: Bit set to logic one
0: Bit set to logic zero
X: No set value
Pin#: Value latched from pin # at reset time
RO: Read only
RW: Read or write
SC: Self-clearing
PS: Value is permanently set
LL: Latch low
LH: Latch high
0h
1h
2h
3h
4h
5h
6h
7h
8h-Fh
Address
Speed selection
Reset
Loopback
Auto-negotiation
enable
Bit Name
BMCR
BMSR
PHYIDR1
PHYIDR2
ANAR
ANLPAR
ANER
Reserved
IEEE reserved
Register Name
0, RW / SC
0, RW
1, RW
1, RW
Table 6: Embedded Ethernet Phy Register Map
Default
Basic mode control register, basic register.
Basic mode status register, basic register.
PHY identifier register 1, extended register.
PHY identifier register 2, extended register.
Auto negotiation advertisement register, extended register.
Auto negotiation link partner ability register, extended register.
Auto negotiation expansion register, extended register.
Reserved and currently not supported.
IEEE 802.3u reserved.
USB to 10/100 Fast Ethernet/HomePNA Controller
Reset:
1 = Software reset
0 = Normal operation
Loopback:
1 = Loopback enabled
0 = Normal operation
Speed selection:
1 = 100 Mb/s
0 = 10 Mb/s
Auto-negotiation enable:
1 = Auto-negotiation enabled. Bits 8 and 13 of this register are
ignored when this bit is set.
0 = Auto-negotiation disabled. Bits 8 and 13 of this register
28
Description
ASIX ELECTRONICS CORPORATION
Description
AX88772