LAN7430 datasheet(16/77 Pages) MICROCHIP

16 / 77 page

LAN7430/LAN7431

DS00002631D-page 16

 2018-2019 Microchip Technology Inc.

3.3

Pin Descriptions

This section provides descriptions of each individual pin function. Buffer type definitions are detailed in Table 1-2.

TABLE 3-3:

PIN DESCRIPTIONS

Name

Symbol

Buffer

Type

Description

Gigabit Ethernet PHY Interface (LAN7430 only)

Ethernet TX/RX

Positive

Channel A

TXRXP_A

AIO

Media Dependent Interface[0], positive signal of differen-

tial pair

1000BT mode: TXRXP_A corresponds to BI_DA+ for

MDI configuration and BI_DB+ for MDI-X configuration,

respectively.

10BT/100BT mode: TXRXP_A is the positive transmit

signal (TX+) for MDI configuration and the positive

receive signal (RX+) for MDI-X configuration, respec-

tively.

Ethernet TX/RX

Negative

Channel A

TXRXM_A

AIO

Media Dependent Interface[0], negative signal of differen-

tial pair

1000BT mode: TXRXM_A corresponds to BI_DA- for

MDI configuration and BI_DB- for MDI-X configuration,

respectively.

10BT/100BT-TX mode: TXRXM_A is the negative trans-

mit signal (TX-) for MDI configuration and the negative

receive signal (RX-) for MDI-X configuration, respectively.

Ethernet TX/RX

Positive

Channel B

TXRXP_B

AIO

Media Dependent Interface[1], positive signal of differen-

tial pair

1000BT mode: TXRXP_B corresponds to BI_DB+ for

MDI configuration and BI_DA+ for MDI-X configuration,

respectively.

10BT/100BT mode: TXRXP_B is the positive receive sig-

nal (RX+) for MDI configuration and the positive transmit

signal (TX+) for MDI-X configuration, respectively.

Ethernet TX/RX

Negative

Channel B

TXRXM_B

AIO

Media Dependent Interface[1], negative signal of differen-

tial pair

1000BT mode: TXRXM_B corresponds to BI_DB- for

MDI configuration and BI_DA- for MDI-X configuration,

respectively.

10BT/100BT mode: TXRXP_B is the negative receive

signal (RX-) for MDI configuration and the negative trans-

mit signal (TX-) for MDI-X configuration, respectively.

Ethernet TX/RX

Positive

Channel C

TXRXP_C

AIO

Media Dependent Interface[2], positive signal of differen-

tial pair

1000BT mode: TXRXP_C corresponds to BI_DC+ for

MDI configuration and BI_DD+ for MDI-X configuration,

respectively.

10BT/100BT mode: TXRXP_C is not used.

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