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KSZ9021RL Datasheet(PDF) 9 Page - Microchip Technology

Part # KSZ9021RL
Description  Gigabit Ethernet Transceiver with RGMII Support
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

KSZ9021RL Datasheet(HTML) 9 Page - Microchip Technology

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 2009-2019 Microchip Technology Inc.
DS00003050A-page 9
KSZ9021RL/RN
21
LED1 /
PHYAD0
I/O
LED Output:
Programmable LED1 Output /
Config Mode:
The pull-up/pull-down value is latched as PHYAD[0] during power-
up/reset. See “Strapping Options” section for details.
The LED1 pin is programmed by the LED_MODE strapping option (pin
55), and is defined as follows.
Single LED Mode
Tri-color Dual LED Mode
For Tri-color Dual LED Mode, LED2 works in conjunction with LED1 (pin
21) to indicate 10 Mbps Link and Activity.
22
DVDDL
P
1.2V digital V
DD
23
VSS
Gnd
Digital ground
24
TXD0
I
RGMII Mode:
RGMII TD0 (Transmit Data 0) Input
25
TXD1
I
RGMII Mode:
RGMII TD1 (Transmit Data 1) Input
26
TXD2
I
RGMII Mode:
RGMII TD2 (Transmit Data 2) Input
27
TXD3
I
RGMII Mode:
RGMII TD3 (Transmit Data 3) Input
28
VSS
Gnd
Digital ground
29
DVDDL
P
1.2V digital V
DD
30
DVDDH
P
3.3V/2.5V digital V
DD
31
TX_ER
I
RGMII Mode:
This pin is not used and should be left as a no connect.
Pin
Number
Pin Name
Type
(Note 1)
Pin Function
Activity
Pin StateLED Definition
No Activity
H
OFF
Activity (RX, TX)
Toggle
Blinking
Pin State
LED Definition
Link / Activity
LED2
LED1
LED2
LED1
Link off
H
H
OFF
OFF
1000 Link / No Activity
L
H
ON
Off
1000 Link / Activity (RX, TX)
Toggle
H
Blinking
OFF
100 Link / No Activity
H
L
OFF
ON
100 Link / Activity (RX, TX)
H
Toggle
OFF
Blinking
10 Link / No Activity
L
L
ON
ON
10 Link / Activity (RX, TX)
Toggle
Toggle
Blinking
Blinking


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