KSZ9021RL Ver la hoja de datos (PDF) - Micrel
Número de pieza
componentes Descripción
Fabricante
KSZ9021RL Datasheet PDF : 59 Pages
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Micrel, Inc.
Pin Number
13
14
Pin Name
AVDDL
TXRXP_D
15
TXRXM_D
16
AVDDH
17
VSS
18
VSS
19
LED2 /
PHYAD1
20
DVDDH
KSZ9021RL/RN
Type(1)
P
I/O
I/O
P
Gnd
Gnd
I/O
Pin Function
1.2V analog VDD
Media Dependent Interface[3], positive signal of differential pair
1000Base-T Mode:
TXRXP_D corresponds to BI_DD+ for MDI configuration and BI_DC+ for
MDI-X configuration, respectively.
10Base-T/100Base-TX Mode:
TXRXP_D is not used.
Media Dependent Interface[3], negative signal of differential pair
1000Base-T Mode:
TXRXM_D corresponds to BI_DD- for MDI configuration and BI_DC- for
MDI-X configuration, respectively.
10Base-T/100Base-TX Mode:
TXRXM_D is not used.
3.3V analog VDD
Digital ground
Digital ground
LED Output: Programmable LED2 Output /
Config Mode: The pull-up/pull-down value is latched as PHYAD[1] during
power-up/reset. See “Strapping Options” section for details.
The LED2 pin is programmed by the LED_MODE strapping option (pin 55), and is
defined as follows.
Single LED Mode
Link
Link off
Link on (any speed)
Pin State
H
L
LED Definition
OFF
ON
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, LED2 works in conjunction with LED1 (pin 21) to
indicate 10 Mbps Link and Activity.
P
3.3V/2.5V digital VDD
February 13, 2014
10
Revision 1.2
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