VSC8641XKO Vitesse Semiconductor Corp, VSC8641XKO Datasheet - Page 63

• 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 41.
4.3.7
Table 42.
4.3.8
Table 43.
Revision 4.3
August 2009
Extended PHY Control 3, Address 20E (0x14) (continued)
EEPROM Interface Status and Control
Register 21E is used to affect control over device function when you have incorporated
a startup EEPROM into your design.
EEPROM Interface Status and Control, Address 21E (0x15)
EEPROM Data Read/Write
Register 22E in the extended register space enables access to the contents of the
external EEPROM in your design. The following table lists the writes needed to obtain
the data from the external device.
EEPROM Read or Write, Address 22E (0x16)
Bit
1
0
Bit
15
14
13
12
11
10:0
Bit
15:8
7:0
Name
Reserved
Re-read EEPROM
after software reset
Enable EEPROM
access
EEPROM read or
write
EEPROM ready
EEPROM address
Name
EEPROM read data
EEPROM write data
Name
Link speed
auto-downshift
status
Reserved
Access Description
Access
Access
R/W
R/W
R/W
R/W
R/W
RO
RO
RO
RO
RO
1 = Downshift is required or has occurred.
0 = No downshift.
Sets the address of the EEPROM to
Eight-bit data to be written to EEPROM.
Description
This is a super-sticky bit.
1 = Contents of EEPROM to be re-read
after software reset.
This is a self-clearing bit.
1 = Execute read or write EEPROM
based on the settings of register 21E,
bit 12.
1 = Read from EEPROM.
0 = Write to EEPROM.
1 = EEPROM is ready for read or
write.
which the read or write is to be
directed.
Description
Eight-bit data read from EEPROM;
requires setting register 21E, bit 13.
VSC8641 Datasheet
00000000000
Configuration
Default
Default
0x00
0x00
0
0
1
1
Default
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