KS8001
Pin Number
Pin Name
Type
(Note 1)
Pin Function
LED mode = 10
100Mbps Link
No Link
28
LED2/
DUPLEX
Ipu/O
Pin State
H
LED Definition
Off
Micrel
Link
L
On
Programmable LED Output 2
Configuration Mode: Latched as DUPLEX (register 0h, bit 8) during power up
/ reset. See “Strapping Options” Section for details. Active Low. The LED2
pin is also programmable via register 1eh.
LED mode = 00
Duplex
Half
Full
LED mode = 01
Full Duplex/Col
Half
Full
Collision
LED mode = 10
Duplex
Half
Pin State
H
LED Definition
Off
Pin State
H
L
-
LED Definition
Off
On
Toggle
Pin State
H
L
LED Definition
Off
On
29
LED3/
NWAYEN
Ipu/O
Full
L
On
Programmable LED Output 3
Configuration Mode: Latched as ANEG_EN (register 0h, bit 12) during power
up / reset. See “Strapping Options” Section for details. Active Low. The
LED3 pin is also programmable via register 1eh.
LED mode = 00
Collision
No Collision
Collision
LED mode = 01
Activity
Activity
LED mode = 10
Activity
Pin State
LED Definition
Activity
-
Toggle
Power Down.
1=Normal operation, 0=Power down, Active low
Pin State
-
LED Definition
Toggle
Pin State
H
L
LED Definition
Off
On
30
31
32
33
34
35
PD#
VDDRX
RX-
RX+
FXSD/
FXEN
GND
Ipu
Pwr
I
I
Ipd/O
Gnd
Analog 1.8 V power supply
Receive Input
Differential receive input pins for FX, 100BASE-TX or 10BASE-T
Receive Input
Differential receive input pin for FX, 100BASE-TX or 10BASE-T
Fiber Mode Enable / Signal Detect in Fiber Mode
If FXEN=0, FX mode is disable. The default is “0”.
See “100BT FX Mode” section for more details.
Ground
May 2005 – SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE
KS8001
MICREL CONFIDENTIAL. DO NOT DISTRIBUTE.
8
MICREL [ MICREL SEMICONDUCTOR ]
