KSZ9031MNX Ver la hoja de datos (PDF) - Microsemi Corporation

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KSZ9031MNX

Gigabit Ethernet Transceiver with GMII/MII Support

Microsemi Corporation 

KSZ9031MNX

TABLE 2-1: SIGNALS - KSZ9031MNX (CONTINUED)

Pin

Number

Pin

Name

14

TXRXP_D

15

TXRXM_D

16

AVDDH

17

LED2/

PHYAD1

18

DVDDH

Type

Note

2-1

I/O

I/O

P

I/O

P

Description

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/2.5V (commercial temperature only) analog VDD

LED2 output: Programmable LED2 output

Config mode: The voltage on this pin is sampled and latched during the

power-up/reset process to determine the value of PHYAD[1]. See the Strap-

ping Options - KSZ9031MNX 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

Pin State

H

LED Definition

OFF

Link On (any speed)

L

ON

Tri-Color Dual-LED Mode

Link/Activity

Link Off

Pin State

LED2

H

LED1

H

LED Definition

LED2

OFF

LED1

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)

10 Link/No Activity

H

Toggle

OFF

Blinking

L

L

ON

ON

10 Link/Activity

(RX, TX)

Toggle

Toggle

Blinking Blinking

For tri-color dual-LED mode, LED2 works in conjunction with LED1 (Pin 19) to

indicate 10 Mbps link and activity.

3.3V, 2.5V, or 1.8V digital VDD_IO

 2016 Microchip Technology Inc.

DS00002096C-page 7

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