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KS8993 Datasheet(PDF) 11 Page - Micrel Semiconductor

Part # KS8993
Description  3-Port 10/100 Integrated Switch with PHY and Frame Buffer
PDF  35 Pages
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Manufacturer  MICREL [Micrel Semiconductor]
Direct Link  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

KS8993 Datasheet(HTML) 11 Page - Micrel Semiconductor

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April 2009
11
KS8993
KS8993
Micrel
Group
I/O Names
Active Status
Description
LED[1:3][3]
L
Output (after reset).
Mode 0: Link + Activity (toggle = receiving or transmitting, constant low = link,
constant high = no link).
Mode 1: Receive Activity (toggle during receiving / high = no receiving activity).
Mode 2: 100/link/act (constant low = link, toggle = act, constant high = no link).
Mode 3: Mode 3: Link + Activity (toggle = receiving or transmitting, constant low =
link, constant high = no link).
Note: Mode is set by MODESEL[3:0] ; please see description in UP “Unmanaged
Programming” section.
UP
MODESEL[3:0]
H
Mode select at reset time. LED mode is selected by using the table below. MODESEL
also controls the maximum frame length accepted.
MODESEL
3
2
1
0
LED mode
Max Length (no tag/tag)
0
0
0
0
LED mode 0
1518/1522
0
0
0
1
LED mode 1
1518/1522
0
0
1
0
LED mode 2
1518/1522
0
0
1
1
LED mode 3
1518/1522
0
1
0
0
Factory testing
Not applicable
0
1
0
1
Factory testing
Not applicable
0
1
1
0
Factory testing
Not applicable
0
1
1
1
Factory testing
Not applicable
1
0
0
0
Factory testing
Not applicable
1
0
0
1
Factory testing
Not applicable
1
0
1
0
Factory testing
Not applicable
1
0
1
1
LED mode 3
1536/1536
1
1
0
0
LED mode 0
1536/1536
1
1
0
1
Factory testing
Not applicable
1
1
1
0
LED mode 2
1536 / 1536
1
1
1
1
Factory testing
Not applicable
FFLOW1#
L
Enable force flow control feature on port 1.
Pulled up = no force flow control feature on port 1 (default).
Flow control feature is enabled and disabled by auto-negotiation.
Pulled down = enable force flow control feature on port 1 regardless of auto-negotia-
tion result.
FFLOW2#
L
Program force flow control feature on port 2.
Pulled up = no force flow control feature on port 2 (default).
Flow control feature is enabled and disabled by auto-negotiation.
Pulled down = enable force flow control feature on port 2 regardless of auto-negotia-
tion result.
LED[1][3]
Program advertise flow control feature for 10/100BaseTX ports during auto-negotia-
tion at reset time.
Pulled low = no advertise flow control during auto-negotiation.
Pulled high = advertise flow control during auto-negotiation (default).
LED[1][2]
Programs force flow control feature on port 3, incuding MII port at reset time.
Pulled low = no force flow control feature on port 3, including MII port (default).
Flow control feature is enabled/disabled by auto-negotiation result.
Pulled high = enable force flow control feature on port 3, including MII port regardless
of auto-negotiation result.
LED[1][1]
Reserved - use float configuration.



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