KS8999_11 MICREL [Micrel Semiconductor], KS8999_11 Datasheet - Page 15

• Manufacturer Part Number: KS8999_11
• Description: Integrated 9-Port 10/100 Switch with PHY and Frame Buffer
• Manufacturer: MICREL [Micrel Semiconductor]

January 2005
Micrel, Inc.
Group
UP
MODESEL[3:0]
LED[1:9][2]
LED[1:9][3]
I/O Names
LED[1][3]
LED[1][2]
LED[1][1]
LED[1][0]
Active Status
H
L
L
Description
Output (after reset)
Mode 0: Collision (on = collision/off = no collision)
Mode 1: Transmit Activity (on during transmission)
Mode 2: Link activity (10Mb mode)
Mode 3: Full Duplex + Collision
(constant on = full duplex; intermittent on = collision; off = half-duplex with no
collision)
Output (after reset)
Mode 0: Link + Activity
When LED is solid “on”, it indicates the link is on for both 10 or 100BaseTX,
but no data is transmitting or receiving.
When LED is solid “off”, it indicates the link is off.
When LED is blinking, it indicates data is transmitting or receiving for either 10
or 100 BaseTX
Mode 1: Receive Activity (on = receiving/off = not receiving)
Mode 2: Link activity (100Mb mode)
Mode 3: Link + Activity (see description above)
Note: Mode is set by MODESEL[3:0] ; please see description in UP
(unmanaged programming) section.
Mode select at reset time. LED mode is selected by using the table below.
Note that under normal operation MODESEL[3:2] must be tied low.
MODESEL
3 2 1 0
0 0 0 0
0 0 0 1
0 0 1 0
0 0 1 1
0 1 0 0
0 1 0 1
0 1 1 0
0 1 1 1
1 0 0 0
1 0 0 1
1 0 1 0
1 0 1 1
1 1 0 0
1 1 0 1
1 1 1 0
1 1 1 1
Programs auto-negotiation on port 1
D = Disable auto-negotiation, F/U = Enable auto-negotiation (default)
Programs auto-negotiation on port 2
D = Disable auto-negotiation, F/U = Enable auto-negotiation (default)
Programs auto-negotiation on port 3
D = Disable auto-negotiation, F/U = Enable auto-negotiation (default)
Programs auto-negotiation on port 4 D = Disable auto-negotiation,
F/U = Enable auto-negotiation (default)
15
Mode select at reset time. LED mode is selected by using the
table below. Note that under normal operation
MODESEL[3:2] must be tied low.
Operation
LED mode 0
LED mode 1
LED mode 2
LED mode 3
Used for factory testing
Used for factory testing
Used for factory testing
Used for factory testing
Used for factory testing
Used for factory testing
Used for factory testing
Used for factory testing
Used for factory testing
Used for factory testing
Used for factory testing
Used for factory testing
KS8999
KS8999