KSZ8051MNL Datasheet, PDF (12/66 Pages) Micrel Semiconductor – 10Base-T/100Base-TX Physical Layer Transceiver

KSZ8051MNL/RNL
TABLE 2-3: SIGNALS - KSZ8051RNL (CONTINUED)
Pin
Number
29
Pin Name
CONFIG1
Type
Note 2-1
Description
Ipd/O
The pull-up/pull-down value is latched as CONFIG1 at the de-assertion of
reset.
See the Strap-In Options - KSZ8051RNL section for details.
LED output: Programmable LED0 output
Config mode: Latched as auto-negotiation enable (Register 0h, bit [12]) at the
de-assertion of reset.
See the Strap-In Options - KSZ8051RNL section for details.
The LED0 pin is programmable using Register 1Fh bits [5:4], and is defined as
follows.
LED Mode = [00]
Link/Activity
30
LED0/
NWAYEN
Ipu/O No Link
Link
Activity
Pin State
High
Low
Toggle
LED Definition
OFF
ON
Blinking
LED Mode = [01]
Link
Pin State
LED Definition
No Link
High
OFF
Link
Low
ON
LED Mode = [10], [11]: Reserved
LED output: Programmable LED1 output
Config mode: Latched as SPEED (Register 0h, bit [13]) at the de-assertion of
reset.
See the Strap-In Options - KSZ8051RNL section for details.
The LED1 pin is programmable using Register 1Fh bits [5:4], and is defined as
follows.
LED Mode = [00]
31
LED1/
SPEED
Ipu/O
Speed
10BASE-T
Pin State
High
100BASE-TX
Low
LED Definition
OFF
ON
32
PADDLE
Note 2-1
LED Mode = [01]
Activity
No Activity
Pin State
High
LED Definition
OFF
Activity
Toggle
Blinking
RST#
LED Mode = [10], [11]: Reserved
Ipu Chip reset (active low)
GND
GND Ground
P = Power supply.
GND = Ground.
I = Input.
O = Output.
I/O = Bi-directional.
Ipu = Input with internal pull-up (see Electrical Characteristics for value).
Ipu/O = Input with internal pull-up (see Electrical Characteristics for value) during power-up/reset;
output pin otherwise.
Ipd/O = Input with internal pull-down (see Electrical Characteristics for value) during power-up/reset;
output pin otherwise.
Ipu/Opu = Input with internal pull-up (see Electrical Characteristics for value) and output with internal
pull-up (see Electrical Characteristics for value).
NC = Pin is not bonded to the die.
DS00002310A-page 12
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