lan9303m Standard Microsystems Corp., lan9303m Datasheet - Page 133

• Manufacturer Part Number: lan9303m
• Description: Small Form Factor Three Port 10/100 Managed Ethernet Switch With Dual Mii/rmii/turbo Mii
• Manufacturer: Standard Microsystems Corp.

Small Form Factor Three Port 10/100 Managed Ethernet Switch with Dual MII/RMII/Turbo MII
Datasheet
SMSC LAN9303M/LAN9303Mi
9.2.4.5
Switch Engine collision testing is available and is enabled when the
the
transmissions from the Switch Engine will result in the assertion of an internal collision signal to the
Switch Fabric Port 1. Switch Engine collision test occurs regardless of the setting of the
Loopback Mode
Two forms of loopback testing are available: External MAC loopback and Switch Engine loopback.
External MAC loopback is enabled when the
(P1_MII_BASIC_CONTROL)
Engine. Instead, they are looped back onto the receive path. Transmissions from the Switch Engine
are ignored.
Switch Engine loopback is enabled when the
Control Register (P1_MII_BASIC_CONTROL)
sent to the external MAC. Instead, they are looped back internally onto the receive path. Transmissions
from the external MAC are ignored. An internal collision signal to the Switch Engine is available and
is asserted when the
of the setting of the
Port 1 MII Basic Control Register (P1_MII_BASIC_CONTROL)
Isolate
Switch Collision Test Port 1
bit.
is set. Transmissions from the external MAC are not sent to the Switch
DATASHEET
133
Loopback
is set. Transmissions from the Switch Engine are not
Switch Looopback Port 1
bit is set. Switch Engine loopback occurs regardless
bit of the
Port 1 MII Basic Control Register
Switch Collision Test Port 1
is set. In this test mode, any
bit of the
Revision 1.3 (08-27-09)
Port 1 MII Basic
Isolate
bit.
bit of