VSC8641XKO Vitesse Semiconductor Corp, VSC8641XKO Datasheet - Page 71

• Manufacturer Part Number: VSC8641XKO
• Description: IC PHY 10/100/1000 100-LQFP
• Manufacturer: Vitesse Semiconductor Corp
• Type: PHY Transceiverr

Specifications of VSC8641XKO

• Number Of Drivers/receivers: 1/1
• Protocol: Gigabit Ethernet
• Voltage - Supply: 2.5V, 3.3V
• Mounting Type: Surface Mount
• Package / Case: 100-LQFP
• Case: TQFP
• Dc: 07+
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 907-1031

Table 52.
4.5.2
Revision 4.3
August 2009
for data). Data is read from the EEPROM sequentially until all SMI write commands are
completed.
EEPROM Configuration Contents
Read/Write Access to the EEPROM
The VSC8641 device also has the ability to read from and write to an EEPROM such as
an ATMEL AT24CXXX that is directly connected to its EECLK and EEDAT pins. If it is
required to be able to write to the EEPROM, refer to the EEPROM’s specific datasheet to
ensure that write protection on the EEPROM is not set.
The following illustration shows the interaction of the VSC8641 device and the EEPROM.
10-bit Address
0
1
2
3
K
K+1
X
X+1
X+2
X+3
X+4
X+5
X+6
X+7
X+(M–2)
X+(M–1)
X+M
Max Address
Content (Bits 7:0)
0xBD
0xBD
PHY_ADDR[4:0], Base_Address_Location[10:8]
Base_Address_Location[7:0] (K)
Address length not specified
Address length not specified
00000, Config Location[10:8]
Config_Location[7:0] (X)
Address length not specified
Address length not specified
00000, Total_Number_Bytes[10:8]
Total_Number_Bytes[7:0] (M)
Register address a
Data[15:8] to be written to register address a
Data[7:0] to be written to register address a
Register address b
Data[15:8] to be written to register address b
Data[7:0] to be written to register address b
Address length not specified
Register address x
Data[15:8] to be written to register address x
Data[7:0] to be written to register address x
Address length not specified
Address length not specified
VSC8641 Datasheet
Configuration
Page 71