88e3015 Marvell Semiconductor, Inc., 88e3015 Datasheet - Page 60
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88e3015
Manufacturer Part Number
88e3015
Description
Integrated 10/100 Fast Ethernet Transceiver
Manufacturer
Marvell Semiconductor, Inc.
Datasheet
1.88E3015.pdf
(126 pages)
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Table 32:
Doc. No. MV-S103657-00, Rev. C
Page 60
B i ts
11
10
9
8
7
6
5
4:0
F i el d
PwrDwn
Isolate
RestartAneg
Duplex
ColTest
SpeedMSB
Unidirectional
Enable
Reserved
Register 0
PHY Control Register (Continued)
88E3015/88E3018
Integrated 10/100 Fast Ethernet Transceiver
M o d e
R/W
R/W
R/W,
SC
R/W
R/W
RO
R/W
RO
Document Classification: Proprietary Information
H W
R s t
0x0
0x0
0x0
0x1
0x0
Always
0
0x0
Always
0
CONFIDENTIAL
S W
R s t
Retain
Retain
Self
Clear
Update
Retain
Always
0
Retain
Always
0
D e s c r i p t io n
Power Down Mode
When the port is switched from power down to normal
operation, software reset and restart Auto-Negotiation
are performed even when bits Reset (bit 15, above) and
Restart Auto-Negotiation (bit 9, below) are not set by the
user.
0 = Normal operation
1 = Power down
Isolate Mode
0 = Normal operation
1 = Isolate
Restart Auto-Negotiation
Auto-Negotiation automatically restarts after hardware
or software reset regardless of whether or not the restart
bit is set.
0 = Normal operation
1 = Restart Auto-Negotiation Process
Duplex Mode Selection
A write to this registers has no effect unless any one of
the following also occurs:
Software reset is asserted (bit 15), Power down (bit 11),
or transitions from power down to normal operation.
0 = Half-duplex
1 = Full-duplex
Collision Test Mode - This applies to E3010 only.
0 = Disable COL signal test
1 = Enable COL signal test
Speed Selection Mode (MSB)
Will always be 0.
0 = 100 Mbps or 10 Mbps
0 = Enable transmit direction only when valid link is
1 = Enable transmit direction regardless of valid link if
Will always be 0.
established.
register 0.12 = 0 and 0.8 = 1. Otherwise enable
transmit direction only when valid link is established.
October 26, 2006, Advance
Copyright © 2006 Marvell
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