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參數(shù)資料
| 型號： | AM79C970 |
| 廠商： | Advanced Micro Devices, Inc. |
| 英文描述： | PCnetTM-PCI Single-Chip Ethernet Controller for PCI Local Bus |
| 中文描述： | PCnetTM - PCI單芯片以太網(wǎng)控制器的PCI總線 |
| 文件頁數(shù)： | 113/168頁 |
| 文件大?。?/td> | 943K |
| 代理商： | AM79C970 |
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AMD
P R E L I M I N A R Y
1-980
Am79C970
each new occurrence of the en-
abled function for this LED
output.
A value of 0 disables the signal.
A value of 1 enables the signal.
Link Status Enable. Indicates the
current link status on the Twisted
Pair interface. When this bit is en-
abled, a value of ONE will be
passed to the LEDOUT signal to
indicate that the link status state
is PASS. A value of ZERO will be
passed to the LEDOUT signal to
indicate that the link status state
is FAIL.
A value of 0 disables the signal.
A value of 1 enables the signal.
Receive Match status Enable. In-
dicates receive activity on the
network that has passed the ad-
dress match function for this
node. All address matching
modes are included: Physical,
Logical
filtering
Promiscuous.
A value of 0 disables the signal.
A value of 1 enables the signal.
Transmit status Enable. Indi-
cates
PCnet-PCI
transmit activity.
A value of 0 disables the signal.
A value of 1 enables the signal.
Receive Polarity status Enable.
Indicates the current Receive
Polarity condition on the Twisted
Pair interface. A value of ONE in-
dicates that the polarity of the
RXD
±
pair has been reversed. A
value of ZERO indicates that the
polarity of the RXD
±
pair has not
been reversed.
Receive polarity indication is
valid only if the T-MAU is in the
Link Pass state
A value of 0 disables the signal.
A value of 1 enables the signal.
Receive status Enable. Indicates
receive activity on the network.
A value of 0 disables the signal.
A value of 1 enables the signal.
Jabber status Enable. Indicates
that the PCnet-PCI controller is
jabbering on the network.
A value of 0 disables the signal.
A value of 1 enables the signal.
6
LNKSTE
5
RCVME
and
4
XMTE
controller
3
RXPOLE
2
RCVE
1
JABE
0
COLE
Collision status Enable. Indi-
cates collision activity on the net-
work.
A value of 0 disables the signal.
A value of 1 enables the signal.
BCR6: LED2 Status
Bit
Name
Description
31–16
RES
Reserved locations. Written as
ZEROs and read as undefined.
Reserved locations. After H_RE-
SET, the value in this register will
be 0x0088h. The settings of this
register will have no effect on any
PCnet-PCI controller function.
Writes to this register have no ef-
fect on the operation of the
PCnet-PCI controller.
15–0
LED2
BCR7: LED3 Status
Bit
Name
Description
BCR7 controls the function(s)
that the
LED3
pin displays. Multi-
ple functions can be simultane-
ously enabled on this LED pin.
The LED display will indicate the
logical OR of the enabled func-
tions. BCR7 defaults to Transmit
Status
(XMT)
stretcher enabled (PSE = 1) and
is fully programmable.
The default setting after H_RE-
SET for the LED3 register is
0090h. The LED3 register
value is unaffected by S_RESET
or STOP.
Reserved location. Written as
ZEROs and read as undefined.
This bit indicates the current
(non-stretched) value of the LED
output pin. A value of ONE in this
bit indicates that the OR of the
enabled signals is true.
The logical value of the LEDOUT
status signal is determined by the
settings of the individual Status
Enable bits of the LED register
(Bits 6–0).
This bit is READ only by the host,
and is unaffected by H_RESET,
S_RESET or STOP.
LED Polarity. When this bit has
the value ZERO, then the LED
with
pulse
31–16
RES
15
LEDOUT
14
LEDPOL
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| AM79C970A | 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:PCnet-PCI II Single-Chip Full-Duplex Ethernet Controller for PCI Local Bus Product |
| AM79C970AKC | 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:PCnet-PCI II Single-Chip Full-Duplex Ethernet Controller for PCI Local Bus Product |
| AM79C970AKC\\W | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Advanced Micro Devices 功能描述: |
| AM79C970AKC\W | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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