TMC2072_07 SMSC [SMSC Corporation], TMC2072_07 Datasheet - Page 56

• Manufacturer Part Number: TMC2072_07
• Manufacturer: SMSC [SMSC Corporation]

2.13
Revision 0.1 (06-07-07)
Communication
Internal 3 Port HUB Block Diagram
HUB Function
CircLink integrates a 3-port HUB function to expand the network. The HUB function enables conversion of
different communication media among twist-pair cable, fiber optics, and the like. In addition, the HUB
function expands the connection node number and cable length limitations caused by transceiver
performance limitations.
The HUB function is enabled by nHUBON pin. Among three ports, one is used internally for the connection
to CircLink main unit and the remaining two are used as external ports.
function
HUB
Port
CircLink CORE
NHUBON=H
Port1
OFF
DATASHEET
nHUBON=L
Port1,Port2
ON
Page 56
nHUBON=H
Case of
3-Port HUB
RXIN ,
TXEN ,
TXD
Port-1
CMI
Peripheral Mode CircLink™ Controller
RXIN2 ,
TXEN2 ,
TXD (Shared)
Port-2
CMI
SMSC TMC2072
Datasheet