88e1118r Marvell Semiconductor, Inc., 88e1118r Datasheet - Page 7

• Manufacturer Part Number: 88e1118r
• Description: Gigabit Ethernet Transceiver
• Manufacturer: Marvell Semiconductor, Inc.

Table 1:
Copyright © 2011 Marvell
May 6, 2011, Advance
64-QFN
P i n #
30
31
25
26
23
24
19
20
Media Dependent Interface
Pin Name
MDIN[0]
MDIP[0]
MDIN[1]
MDIP[1]
MDIN[2]
MDIP[2]
MDIN[3]
MDIP[3]
Pin
Typ e
I/O, D
I/O, D
I/O, D
I/O, D
Document Classification: Proprietary Information
De scr ip tio n
Media Dependent Interface[0].
In 1000BASE-T mode in MDI configuration, MDIN/P[0] correspond to
BI_DA±. In MDIX configuration, MDIN/P[0] correspond to BI_DB±.
In 100BASE-TX and 10BASE-T modes in MDI configuration, MDIN/P[0] are
used for the transmit pair. In MDIX configuration, MDIN/P[0] are used for the
receive pair.
“The unused MDI pins cannot be connected to ground. They need to be left
floating, because they have internal bias.The 88E1118R device contains an
internal 100 ohm resistor between the MDIP/N[0] pins.
Media Dependent Interface[1].
In 1000BASE-T mode in MDI configuration, MDIN/P[1] correspond to
BI_DB±. In MDIX configuration, MDIN/P[1] correspond to BI_DA±.
In 100BASE-TX and 10BASE-T modes in MDI configuration, MDIN/P[1] are
used for the receive pair. In MDIX configuration, MDIN/P[1] are used for the
transmit pair.
“The unused MDI pins cannot be connected to ground. They need to be left
floating, because they have internal bias.The 88E1118R device contains an
internal 100 ohm resistor between the MDIP/N[0] pins.
Media Dependent Interface[2].
In 1000BASE-T mode in MDI configuration, MDIN/P[2] correspond to
BI_DC±. In MDIX configuration, MDIN/P[2] corresponds to BI_DD±.
In 100BASE-TX and 10BASE-T modes, MDIN/P[2] are not used.
“The unused MDI pins cannot be connected to ground. They need to be left
floating, because they have internal bias.The 88E1118R device contains an
internal 100 ohm resistor between the MDIP/N[0] pins.
Media Dependent Interface[3].
In 1000BASE-T mode in MDI configuration, MDIN/P[3] correspond to
BI_DD±. In MDIX configuration, MDIN/P[3] correspond to BI_DC±.
In 100BASE-TX and 10BASE-T modes, MDIN/P[3] are not used.
“The unused MDI pins cannot be connected to ground. They need to be left
floating, because they have internal bias.The 88E1118R device contains an
internal 100 ohm resistor between the MDIP/N[0] pins.
Doc. No. MV-S105538-00, Rev. --
Pin Description
Page 7