VSC8641XKO Vitesse Semiconductor Corp, VSC8641XKO Datasheet - Page 32

• 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

3.12.2
Table 3.
Revision 4.3
August 2009
Mode
0
1
2
3
4
5
Function Name
Link/activity
Link1000/activity
Link100/activity
Link10/activity
Link100/1000/activity
Link10/1000/activity
For added flexibility, the VSC8641 LED can be controlled using the enhanced LED
method. The enhanced LED method is enabled by setting MII Register 17E.4 = 1. When
enabled, then the LEDs are controlled by MII Registers 16E and 17E. In this method,
the MII Register 27 settings are ignored.
Simple LED Method
simple LED method. This LED method is enabled on power-up and is controlled by MII
Register 27. In this method, MII Register 27 controls the LEDs. For more information,
see
Enhanced LED Method
enhanced LED method. In this method, MII Register 16E and 17E control the LEDs. For
more information, see
Behavior,”
LED Modes
If you are using the enhanced LED method, there are several LED modes available.
They are found in MII Register 16E. Each LED pin can be configured to display different
status information. Set the LED mode either by using register 16E or with the
CMODE pin setting. The following table summarizes the LED functions.
Note The modes listed in the following table are equivalent to the setting used in
register 16E to configure each LED pin. For the LED states listed, 1 = pin held high (de-
asserted), 0 = pin held low (asserted), and blink/pulse-stretch is dependent on the LED
behavior setting in register 17E.
LED Mode and Function Summary
“LED Control,”
page 60.
LED State and Description
1 = No link in any speed on any media interface.
0 = Valid link at any speed on any media interface.
Blink or pulse-stretch = Valid link at any speed on any media interface and
with activity present.
1 = No link in 1000BASE-T.
0 = Valid 1000BASE-T link.
Blink or pulse-stretch = Valid 1000BASE-T link with activity present.
1 = No link in 100BASE-TX.
0 = Valid 100BASE-TX link.
Blink or pulse-stretch = Valid 100BASE-TX link with activity present.
1 = No link in 10BASE-T.
0 = Valid 10BASE-T link.
Blink or pulse-stretch = Valid 10BASE-T link with activity present.
1 = No link in 100BASE-TX or 1000BASE-T.
0 = Valid 100BASE-TX or 1000BASE-T link.
Blink or pulse-stretch = Valid 100BASE-TX or 1000BASE-T link with activity
present.
1 = No link in 10BASE-T or 1000BASE-T.
0 = Valid 10BASE-T or 1000BASET-T link.
Blink or pulse-stretch = Valid 10BASE-T or 1000BASE-T link with activity
present.
page 56.
“Enhanced LED Method Select,”
When MII Register 17E.4 = 0, the LEDs are controlled by the
When MII Register 17E.4 = 1, the LEDs are controlled by the
page 59 and
Functional Descriptions
VSC8641 Datasheet
“Enhanced LED
Page 32