LAN9313 datasheet(196/398 Pages) SMSC

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Three Port 10/100 Managed Ethernet Switch with MII

Datasheet

Revision 1.2 (04-08-08)

196

SMSC LAN9313/LAN9313i

DATASHEET

13.1.5.3

Port 0(External MII) Manual Flow Control Register (MANUAL_FC_MII)

This read/write register allows for the manual configuration of the switch Port 0(External MII) flow

control. This register also provides read back of the currently enabled flow control settings, whether

set manually or Auto-Negotiated. Refer to Section 6.2.3, "Flow Control Enable Logic," on page 60 for

additional information.

Note:

The flow control values in the Section 13.1.7.5, "Virtual PHY Auto-Negotiation Advertisement

Offset:

1A8h

Size:

32 bits

BITS

DESCRIPTION

TYPE

DEFAULT

31:7

RESERVED

Port 0 Backpressure Enable (BP_EN_MII)

This bit enables/disables the generation of half-duplex backpressure on

switch Port 0.

0: Disable backpressure

1: Enable backpressure

R/W

Note 13.12

Port 0 Current Duplex (CUR_DUP_MII)

This bit indicates the actual duplex setting of the switch Port 0.

0: Full-Duplex

1: Half-Duplex

Note 13.13

Port 0 Current Receive Flow Control Enable (CUR_RX_FC_MII)

This bit indicates the actual receive flow setting of switch Port 0

0: Flow control receive is currently disabled

1: Flow control receive is currently enabled

Note 13.13

Port 0 Current Transmit Flow Control Enable (CUR_TX_FC_MII)

This bit indicates the actual transmit flow setting of switch Port 0.

0: Flow control transmit is currently disabled

1: Flow control transmit is currently enabled

Note 13.13

Port 0 Receive Flow Control Enable (RX_FC_MII)

When the MANUAL_FC_MII bit is set, or Virtual Auto-Negotiation is

disabled, this bit enables/disables the detection of full-duplex Pause packets

on switch Port 0.

0: Disable flow control receive

1: Enable flow control receive

R/W

Note 13.14

Port 0 Transmit Flow Control Enable (TX_FC_MII)

When the MANUAL_FC_MII bit is set, or Virtual Auto-Negotiation is

disabled, this bit enables/disables full-duplex Pause packets to be generated

on switch Port 0.

0: Disable flow control transmit

1: Enable flow control transmit

R/W

Note 13.14

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