Datasheet

Micrel, Inc.
KSZ8081MNX/KSZ8081RNB
August
19, 2015 17
Revision 1.4
Pin Description – KSZ8081RNB (Continued)
Pin Number Pin Name Type
(6)
Pin Function
30
LED0/
NWAYEN
Ipu/O
LED Output: Programmable LED0 Output.
Config Mode: Latched as auto-negotiation enable (Register 0h, Bit [12]) at the de-
assertion of reset.
See the Strapping Options – KSZ8081RNB section for details.
The LED0 pin is programmable using Register 1Fh bits [5:4], and is defined as
follows:
LED Mode = [00]
Link/Activity Pin State LED Definition
No link High OFF
Link Low ON
Activity Toggle Blinking
LED Mode = [01]
Link Pin State LED Definition
No link High OFF
Link Low ON
LED Mode = [10], [11] Reserved
31
LED1/
SPEED
Ipu/O
LED Output: Programmable LED1 Output.
Config Mode: Latched as Speed (Register 0h, Bit [13]) at the de-assertion of reset.
See the Strapping Options – KSZ8081RNB section for details.
The LED1 pin is programmable using Register 1Fh bits [5:4], and is defined as
follows:
LED Mode = [00]
Speed Pin State LED Definition
10Base-T High OFF
100Base-TX Low ON
LED Mode = [01]
Activity
Pin State
LED Definition
No activity High OFF
Activity Toggle Blinking
LED Mode = [10], [11] Reserved
32 RST# Ipu Chip Reset (active low).
PADDLE GND GND Ground.