AX88772_07 ASIX [ASIX Electronics Corporation], AX88772_07 Datasheet - Page 21

• Manufacturer Part Number: AX88772_07
• Description: USB to 10/100 Fast Ethernet/HomePNA Controller
• Manufacturer: ASIX [ASIX Electronics Corporation]

6.2.1.4 PHY Read Register (07h, read only)
6.2.1.5 PHY Write Register (08h, write only)
6.2.1.6 Serial Management Status Register (09h, read only)
6.2.1.7 Hardware Serial Management Control Register (0Ah, write only)
6.2.1.8 SROM Read Register (0Bh, read only)
finished accessing Serial Management Interface to release the ownership back to hardware to allow periodic Interrupt
Endpoint to be able to access the Ethernet PHY’s registers via the Serial Management Interface.
AA [4:0]: The PHY ID value.
CC [4:0]: The register address of Ethernet PHY’s internal register.
AA [7:5]: Reserved
CC [7:5]: Reserved
AA [4:0]: The PHY ID value.
CC [4:0]: The register address of Ethernet PHY’s internal register.
AA [7:5]: Reserved
CC [7:5]: Reserved
When software is done accessing Serial Management Interface, one needs to issue this command to release the
ownership of the Interface back to ASIC’s hardware. After issuing this command, following PHY Read Register or
PHY Write Register from software will be ignored. NOTE: Software should issue this command every time after
AA [7:0]: The read address of Serial EEROM.
Host_EN: Host access Enable. Software can read this register to determine the current ownership of Serial
1: Software is allowed to access Ethernet PHY’s internal registers via PHY Read Register or PHY Write Registers.
0: ASIC’s hardware owns the Serial Management Interface and software’s access is ignored.
Bit7
Bit7
Bit7
Bit7
Management Interface.
Bit6
Bit6
Bit6
Bit6
Bit5
Bit5
Bit5
Bit5
Reserved
USB to 10/100 Fast Ethernet/HomePNA Controller
Bit4
Bit4
Bit4
Bit4
AA [7:0]
AA [7:0]
AA [7:0]
CC [7:0]
CC [7:0]
00h
00h
Bit3
Bit3
Bit3
Bit3
21
Bit2
Bit2
Bit2
Bit2
ASIX ELECTRONICS CORPORATION
Bit1
Bit1
Bit1
Bit1
Host_EN
Bit0
Bit0
Bit0
Bit0
AX88772