Freescale Semiconductor MCF52230 ColdFire, Reference Manual

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Ethernet Physical Transceiver (EPHY)
MCF52235 ColdFire® Integrated Microcontroller Reference Manual, Rev. 6
19-6 Freescale Semiconductor
Table 19-2. EPHYCTL0 Field Descriptions
Field Description
7
EPHYEN
EPHY Enable.
This bit can be written anytime.
1 Enables EPHY
0 Disables EPHY
6
ANDIS
Auto Negotiation Disable.
This bit can be written anytime, but the value is latched in the ANE bit of the MII PHY control register
(MII address 0.12) only when the EPHYEN bit transitions from 0 to 1.
1 Auto negotiation is disabled after start-up. A 0 is latched in the ANE bit of the MII PHY control
register (MII address 0.12), and upon completion of the start-up delay (t
Start-up
), the EPHY
bypasses auto-negotiation. The mode of operation is determined by the manual setting of MII
registers.
0 Auto negotiation is enabled after start-up. A 1 is latched in the ANE bit of the MII PHY control
register (MII address 0.12), and upon completion of the start-up delay (t
Start-up
), the EPHY enters
auto-negotiation. The mode of operation is automatically determined.
5
DIS100
Disable 100 BASE-TX PLL.
This bit can be written anytime. Allows user to power down the clock generation PLL for 100BASE-TX
clocks.
1 Disables 100BASE-TX PLL
0 100BASE-TX PLL state determined by EPHY operation mode
4
DIS10
Disable 10BASE-T PLL.
This bit can be written anytime. Allows user to power down the clock generation PLL for 10BASE-T
clocks.
1 Disables 10BASE-T PLL
0 10BASE-T PLL state determined by EPHY operation mode
3
LEDEN
LED Drive Enable.
This bit can be written anytime.
1 Enables the EPHY to drive LED signals.
0 Disables the EPHY to drive LED signals.
2
EPHYWAI
EPHY Module Stops While in Wait. This bit can be written anytime.
1 Disables the EPHY module while the MCU is in wait mode. EPHY interrupts cannot be used to
bring the MCU out of wait.
0 Allows the EPHY module to continue running during wait.
1 Reserved, should be cleared.
0
EPHYIEN
EPHY Interrupt Enable.
This bit can be written anytime.
1 Enables EPHY module interrupts
0 Disables EPHY module interrupts
Because
of
an
order
from
the
United
States
International
Trade
Commission,
BGA-packaged
product
lines
and
part
numbers
indicated
here
currently
are
not
available
from
Freescale
for
import
or
sale
in
the
United
States
prior
to
September
2010:MCF52234CVM60,
MCF52235CVM60