KS8997 View Datasheet(PDF) - Micrel
Part Name
Description
MFG CO.
KS8997 Datasheet PDF : 39 Pages
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Micrel, Inc.
KS8997/KSZ8997
I/O Grouping
Group Name
PHY
IND
UP
CTRL
TEST
PWR/GND
Description
Physical interface
LED Indicators
Unmanaged Programmable
Control and Miscellaneous
Test (Factory)
Power and Ground
I/O Descriptions
Group
PHY
IND
UP
I/O Names
RXP[1:8]
RXM[1:8]
TXP[1:8]
TXM[1:8]
ISET
LED[1:8][0]
LED[1:8][2]
LED[1:8][3]
MODESEL[1:0]
Active Status
Analog
Analog
Analog
L
L
L
H
Description
Differential inputs (receive) for connection to media transformer.
Differential outputs (transmit) for connection to media transformer.
Transmit Current Set. Connect an external reference resistor to set transmitter
output current. This pin is connected to a 1% 3kΩresistor to ground if a
transformer with 1:1 turn ratio is used.
Output (after reset)
Mode 0: Speed (on = 100/off = 10)
Mode 1: Reserve
Mode 2: Collision (on = collision/off = no collision)
Mode 3: Speed (on = 100/off = 10)
Output (after reset)
Mode 0: Collision (on = collision/off = no collision)
Mode 1: Reserve
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
Mode 1: Reserve
Mode 2: Link Activity (100Mb mode)
Mode 3: Link + Activity
Note: Mode is set by MODESEL[1:0] ; See description in UP (unmanaged
programming) section
Mode select at reset time. LED mode is selected by using the table below.
LED[1][3]
LED[1][2]
LED[1][0]
LED[2][3]
LED[2][2]
MODESEL
[1]
[0] Operation
0
0 LED mode 0
0
1 LED mode 1
1
0 LED mode 2
1
1 LED mode 3
Reserved – use float configuration
Reserved – use float configuration
Reserved – use float configuration
Reserved – use float configuration
Reserved – use float configuration
February 2007
11
M9999-022807-1.1
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