LAN9250 datasheet(346/421 Pages) MICROCHIP

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LAN9250

DS00001913A-page 346

 2015 Microchip Technology Inc.

RX IP Address Enable (RX_IP_ADDR_EN)

This bit enables the checking of the IP destination address in PTP messages

for both IPv4 and IPv6 formats.

Note:

The host S/W must not change this bit while the 1588 Enable

(1588_ENABLE) bit in 1588 Command and Control Register

(1588_CMD_CTL) is set.

R/W

RX MAC Address Enable (RX_MAC_ADDR_EN)

This bit enables the checking of the MAC destination address in PTP mes-

sages.

Note:

The host S/W must not change this bit while the 1588 Enable

(1588_ENABLE) bit in 1588 Command and Control Register

(1588_CMD_CTL) is set.

R/W

RX Layer 2 Enable (RX_LAYER2_EN)

This bit enables the detection of the layer 2 formatted PTP messages.

Note:

The host S/W must not change this bit while the 1588 Enable

(1588_ENABLE) bit in 1588 Command and Control Register

(1588_CMD_CTL) is set.

R/W

RX IPv6 Enable (RX_IPV6_EN)

This bit enables the detection of the UDP/IPv6 formatted PTP messages.

Note:

The host S/W must not change this bit while the 1588 Enable

(1588_ENABLE) bit in 1588 Command and Control Register

(1588_CMD_CTL) is set.

R/W

RX IPv4 Enable (RX_IPV4_EN)

This bit enables the detection of the UDP/IPv4 formatted PTP messages.

Note:

The host S/W must not change this bit while the 1588 Enable

(1588_ENABLE) bit in 1588 Command and Control Register

(1588_CMD_CTL) is set.

R/W

Bits

Description

Type

Default

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