VSC8601 Datasheet
Revision History
register 28E.13:12 set to 10 or 11. In the second set, the minimum is 40% and the
maximum is 60% and the condition is: register 28E.13:12 set to 00 or 01.
•
•
•
In the AC characteristics for RGMII compensated, all of the setup and hold times
were modified from 0 ns maximum to 3 ns maximum.
In the description of pin MDIO, the type was corrected from open drain (OD) to
input and output (I/O).
The PLLMODE pin description was updated with additional clocking information. If a
crystal or an external 25 MHz clock is used, PLLMODE must be pulled low. If an
external 125 MHz clock is used, PLLMODE must be pulled high.
•
•
•
A design guideline was added regarding writes from the serial management
interface (SMI) after a software reset.
A design guideline was added regarding delays in the link-up process while in the
forced 100BASE-TX mode with the automatic MDI/MDI-X 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.
Revision 2.2
Revision 2.2 of this datasheet was published in July 2006. The following is a summary
of the changes implemented in the datasheet:
•
•
•
•
In the inline powered Ethernet switch diagram, a reference to “SGMII interface”
was corrected to “RGMII interface.”
In the description of CRC counters, the CRC good counter’s highest value was
corrected from 10,000 to 9,999 packets, after which the counter clears.
The device revision number definition was updated from 0000 to 0001 in the
identifier 2 register (address 3) and the JTAG device identification.
In the DC Characteristics for VDD33, VDDIOMAC, or VDDIOMICRO at 3.3 V, the output
leakage (IOLEAK) was changed to match the same values as the input leakage
(IILEAK) with the same condition (internal resistor included). Specifically, the values
were changed from –10 µA minimum and 10 µA maximum to –36 µA minimum and
36 µA maximum.
•
In the DC Characteristics for VDDIOMAC or VDDIOMICRO at 2.5 V, the output leakage
(IOLEAK) was changed to match the same values as the input leakage (IILEAK) with
the same condition (internal resistor included). Specifically, the values were
changed from –10 µA minimum and 10 µA maximum to –25 µA minimum and
25 µA maximum.
•
•
In the DC characteristics for VDDIOMAC or VDDIOMICRO at 2.5 V, the output high
voltage parameter (VOH) incorrectly stated IOH = 1.0 mA as a condition. It is now
corrected to the condition IOH = –1.0 mA.
For all the current consumption specifications with the on-chip switching regulator
enabled, the specification values for IVDD12 and IVDD12A were removed because
Revision 4.1
September 2009
Page 10
VITESSE [ VITESSE SEMICONDUCTOR CORPORATION ]
