CX11656 HomePlug 1.0 PHY Data Sheet
3.1.2
MDI Control Interface
The Management Data Interface connects the external host to the CX11656 for purposes
of controlling the CX11656 and gathering status. A specific frame format and protocol
definition exists for exchanging management frames over this interface. A register
definition exists as well that specifies a basic register set with an extension mechanism.
The CX11656 implements the basic register set only.
The MDI receive timing is illustrated in Figure 3-11.
The MDI transmit timing is illustrated in Figure 3-12.
The MDI DC characteristics are listed in Table 3-2.
Figure 3-11. MDI Receive Timing
MII_MDCLK
tMII_RVAL
DATA
MII_MDIO
102069_015
Figure 3-12. MDI Transmit Timing
MII_MDCLK
tMII_TSU
tMII_TH
DATA
MII_MDIO
102069_016
Table 3-2. MI DC Characteristics
Parameter
Symbol
Parameter Name
Test Condition
Receive Timing
Min.
Max.
Unit
tMI_RVAL
Measured from Vilmax = 0.8V or
0
300
ns
MII_MDIO valid from ↑
Measured from Vihmin = 2.0V
MII_MDCLK
Transmit Timing
tMI_TSU
tMI_TH
Measured from Vilmax = 0.8V or
10
10
ns
ns
MII_MDIO setup to ↑
Measured from Vihmin = 2.0V
MII_MDCLK
Measured from Vilmax = 0.8V or
Measured from Vihmin = 2.0V
MII_MDIO hold to
↑ MII_MDCLK
102069A
Conexant Proprietary and Confidential Information
3-9
CONEXANT [ CONEXANT SYSTEMS, INC ]
