Marvell 88E3015 Manual page 15

Table 4: Network Interface
88E3 015 88 E3018
26 31
25 30
23 26
22 25
16 18
Table 5: Serial Management Interface
88E30 15 88E3 018
38 48
35 45
Copyright © 2008 Marvell
January 4, 2008, Advance
Pin Nam e Typ e
MDIP[0] I/O
MDIN[0]
MDIP[1] I/O
MDIN[1]
SIGDET I
Pin Name Type
MDC I
MDIO I/O
Document Classification: Proprietary Information
Des cription
Media Dependent Interface[0].
In MDI configuration, MDI[0]± is used for the trans-
mit pair. In MDIX configuration, MDI[0]± is used for
the receive pair.
Media Dependent Interface[1].
In MDI configuration, MDI[1]± is used for the
receive pair. In MDIX configuration, MDI[1]± is used
for the transmit pair.
In 100BASE-FX mode, SIGDET indicates whether
a signal is detected by the fiber optic transceiver.
In 100BASE-TX/10BASE-T modes, this pin should
not be left floating. It should be tied either high or
low.
De scrip tio n
MDC is the clock reference for the serial manage-
ment interface. A continuous clock stream is not
required (i.e., MDC can be stopped when the MDC/
MDIO master is not sending a command). The
maximum frequency supported is 8.33 MHz.
MDIO is the management data. MDIO is used to
transfer management data in and out of the device
synchronously to MDC. This pin requires a pull-up
resistor in a range from 1.5 kohm to 10 kohm.
Doc. No. MV-S103657-00, Rev. D
Signal Description
Pin Description
Page 15