CX82100 Home Network Processor Data Sheet
7.5
Media Independent Interface (MII)
The MII provides a port for transmit and receive data that is media independent, multi-
vendor interoperable, and supports all data rates and physical standards. The port consists
of data paths that are 4 bits wide in each direction as well as control and management
signals. Figure 7-4 shows the MII connector with signal names and the contact
assignment.
Figure 7-4. MII Connector
ETXER
ETXCK
ETXEN
ERXER
ERXCK
ERXDV
ETXD[3:0]
ERXD[3:0]
ECOL
MDC
ECRS
MDIO
+5V
+5V
20
40
1
15 mm
21
+5V
Grounds (22-39)
50 mm
+5V
1015435_031
The primary function of the MII is to provide the interface to the EPHY and necessary
digital interface for EPHY management. The MII management interface utilizes a
communications protocol similar to a serial EEPROM. The 10/100 MAC MII interface
provides all services required by the MII, including encoding and decoding of MII.
101306C
Conexant Proprietary and Confidential Information
7-7
CONEXANT [ CONEXANT SYSTEMS, INC ]
