VSC8641XKO Vitesse Semiconductor Corp, VSC8641XKO Datasheet - Page 11

• 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

Revision 4.1
Revision 4.0
Revision 4.3
August 2009
Revision 4.1 of this datasheet was published in July 2007. The following is a summary
of the changes implemented in the datasheet:
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•
•
Revision 4.0 of this datasheet was published in December 2006. The following is a
summary of the changes implemented in the datasheet:
•
•
•
•
•
•
VSC8641 device violates IEEE specification 802.3. The VSC8641 requires an
off-chip and an on-chip pull-up resistor for the interface to work properly.
Setting the Internal RGMII Timing Compensation Value There are two
inter-related registers that control the internal RGMII skew timing compensation in
which register 23.8 can potentially overwrite register 28E.
10BASE-T Harmonics at 30 MHz and 50 MHz Marginally Violates
Specification
the DO circuit is driven by an all-ones, Manchester-encoded signal, any harmonic
measured on the TD circuit must be at least 27 dB below the fundamental. In
VSC8641, this specification is marginally violated at 30 MHz and 50 MHz when this
measurement is made under corner conditions.
VSC8641-03 is now available. It has an extended operating temperature range of
–40 °C ambient to 90 °C case.
A design guideline was added regarding delays in the link-up process while in the
forced 100BASE-TX mode with the automatic crossover detection feature enabled.
The following design guidelines were removed, because they no longer apply to the
device: Remote Fault Status; DSP Optimization Script Required; Default Port Type
Incorrect; and Core 1.2 V Supply Needs to Meet Specific Range.
The VSC8641KO package was removed from the datasheet. VSC8641XKO remains
available.
In the jumbo packet register settings (28E.11:10), the packet lengths were
updated.
In several current consumption specifications, the values for total power at 2.5 V
were corrected. The previous values were slightly elevated.
In the DC characteristics for V
current parameters (I
In the DC characteristics for V
was increased from 1.7 V to 2.0 V for all pins, except for GMII input pins, which
remain at 1.7 V minimum. Both the input and output leakage current parameters
(I
Current consumption specifications were added for both the power-down mode and
the reset state.
ILEAK
and I
OLEAK
The IEEE 802.3 specification states that in 10BASE-T mode, when
) were increased from ±25 µA to ±35 µA.
ILEAK
and I
DDIO
DDIO
OLEAK
at 3.3 V, both the input and output leakage
at 2.5 V, the minimum input high voltage (V
) were increased from ±36 µA to ±43 µA.
VSC8641 Datasheet
Revision History
Page 11
IH
)