88e3015 Marvell Semiconductor, Inc., 88e3015 Datasheet - Page 14

• Manufacturer Part Number: 88e3015
• Description: Integrated 10/100 Fast Ethernet Transceiver
• Manufacturer: Marvell Semiconductor, Inc.

Table 3:
Doc. No. MV-S103657-00, Rev. C
Page 14
8 8E301 5
18
19
MII Interface (Continued)
88E30 18
20
23
88E3015/88E3018
Integrated 10/100 Fast Ethernet Transceiver
Pin Name
CRS
COL
Document Classification: Proprietary Information
CONFIDENTIAL
Ty pe
O, Z
O, Z
Des cription
MII Carrier Sense. CRS asserts when the receive
medium is non-idle.
CRS is asynchronous to RX_CLK, and TX_CLK.
MII Collision. In full-duplex modes, COL is always
low. In 10BASE-T/100BASE-TX half-duplex
modes, COL asserts only when both the transmit
and receive media are non-idle.
In 10BASE-T half-duplex mode, COL is asserted to
indicate signal quality error (SQE). Disable SQE by
clearing register 16.2 to zero.
COL is asynchronous to RX_CLK, and TX_CLK.
October 26, 2006, Advance
Copyright © 2006 Marvell