KSZ9021RL 查看數據表（PDF） - Micrel
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产品描述 (功能)
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KSZ9021RL Datasheet PDF : 59 Pages
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Micrel, Inc.
Pin Number
21
Pin Name
LED1 /
PHYAD0
KSZ9021RL/RN
Type(1)
I/O
Pin Function
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
Activity
No Activity
Activity (RX, TX)
Pin State
H
Toggle
LED Definition
OFF
Blinking
Tri-color Dual LED Mode
Link / Activity
Link off
1000 Link / No Activity
1000 Link / Activity (RX, TX)
100 Link / No Activity
100 Link / Activity (RX, TX)
10 Link / No Activity
10 Link / Activity (RX, TX)
Pin State
LED2 LED1
H
H
L
H
Toggle H
H
L
H
Toggle
L
L
Toggle Toggle
LED Definition
LED2 LED1
OFF
OFF
ON
OFF
Blinking OFF
OFF
ON
OFF
Blinking
ON
ON
Blinking Blinking
For Tri-color Dual LED Mode, LED1 works in conjunction with LED2 (pin 19) to
indicate 10 Mbps Link and Activity.
22
DVDDL
P
1.2V digital VDD
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 VDD
30
DVDDH
P
3.3V/2.5V digital VDD
31
TX_ER
I
RGMII Mode: This pin is not used and should be left as a no connect.
32
GTX_CLK
I
RGMII Mode: RGMII TXC (Transmit Reference Clock) Input
33
TX_EN
I
RGMII Mode: RGMII TX_CTL (Transmit Control) Input
34
VSS
Gnd Digital ground
35
DVDDL
P
1.2V digital VDD
February 13, 2014
11
Revision 1.2
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