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AM79C971VCW Datasheet(PDF) 249 Page - Advanced Micro Devices

No. de pieza AM79C971VCW
Descripción Electrónicos  PCnet??FAST Single-Chip Full-Duplex 10/100 Mbps Ethernet Controller for PCI Local Bus
PDF  265 Pages
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AM79C971VCW Datasheet(HTML) 249 Page - Advanced Micro Devices

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Am79C971
E-3
6
MFPS
0
Management Frame
Preamble
Suppression.
Defaults
to
ZERO
after power-up and
after hardware resets
(H_RESET). This is
used
by
the
Am79C971 controller
to reduce the time
delay overhead with
processing
the
MII
Management
Frames. Strips the 32
bit preamble off of
each frame sent.
5
ANC
0
Auto-Negotiation
Complete. Defaults to
ZERO after power-up
and after hardware
resets
(H_RESET).
This bit indicates that
the Auto-Negotiation
process
has
completed and that
the
contents
of
registers
4-8
are
valid.
4
RF
0
Remote
Fault.
Defaults
to
ZERO
after power-up and
after hardware resets
(H_RESET). This is a
indication
that
the
remote
node
has
detected a fault with
your system.
3
ANA
1
Auto-Negotiation
Ability.
Defaults
to
ONE after power-up
and after hardware
resets
(H_RESET).
This bit indicates that
PHY’s ability to do
Auto-Negotiation.
This bit is defaulted
ONE
on
the
Am79C971
controller.
2
LS0
0
Link Status. Defaults
to ZERO after power-
up and after hardware
resets
(H_RESET).
This bit indicates the
current status of the
network link.
1
JD
0
Jabber
Detect.
Defaults
to
ZERO
after power-up and
after hardware resets
(H_RESET). This bit
indicates that a jabber
event occurred on the
network.
0
EC
1
Extended Capability.
Defaults to ONE after
power-up and after
hardware
resets
(H_RESET). This bit
indicates
that
the
PHY
has
Auto-
Negotiation
capability. If this bit is
not set then the line
must be forced.
Register 2: PHY Identifier
Bit
Name
Default
Description
15-0
OUI
0000
Organizationally
Unique
Identifier.
Administered by the
IEEE.
Register 3: PHY Identifier
Bit
Name
Default
Description
15-10
OUI
68
Organizationally
Unique
Identifier.
Administered by the
IEEE.
9-4
MMN
01
Manufacturers Model
Number.
The
Am79C971 Controller
will have a default
model number of 1.
3-0
RN
1
Revision
Number.
Initially ZERO.



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