AM79C976 Advanced Micro Devices, AM79C976 Datasheet - Page 206

• Manufacturer Part Number: AM79C976
• Description: PCnet-PRO 10/100 Mbps PCI Ethernet Controller
• Manufacturer: Advanced Micro Devices

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LEDDIS
100E
RES
MPSE
FDLSE
same polarity as the LEDOUT
status bit).
The setting of this bit will not ef-
fect the polarity of the LEDOUT
bit for this register.
Read/Write accessible. LEDPOL
is cleared by H_RESET and is
not affected by S_RESET or set-
ting the STOP bit.
disable the LED output. When
LEDDIS has the value 1, then the
LED output will always be dis-
abled. When LEDDIS has the val-
ue 0, then the LED output value
will be governed by the LEDOUT
and LEDPOL values.
Read/Write accessible. LEDDIS
is cleared by H_RESET and is
not affected by S_RESET or set-
ting the STOP bit.
is set to 1, a value of 1 is passed
to the LEDOUT bit in this register
when the Am79C976 controller is
operating at 100 Mbps mode.
Read/Write accessible. 100E is
cleared by H_RESET and is not
affected by S_RESET or setting
the STOP bit.
read as zeros.
When this bit is set to 1, a value
of 1 is passed to the LEDOUT bit
in this register when magic frame
mode is enabled and a magic
frame is detected on the network.
Read/Write accessible. MPSE is
cleared by H_RESET and is not
affected by S_RESET or setting
the STOP bit.
Indicates the Full-Duplex Link
Test Status. When this bit is set,
a value of 1 is passed to the LED-
OUT signal when the Am79C976
controller is functioning in a Link
Pass state and full-duplex opera-
LED Disable. This bit is used to
100 Mbps Enable. When this bit
Reserved locations. Written and
Magic Packet Status Enable.
Full-Duplex Link Status Enable.
P R E L I M I N A R Y
Am79C976
7
6
5
4
PSE
LNKSE
RCVME
XMTE
Read/Write accessible. FDLSE is
cleared by H_RESET and is not
affected by S_RESET or setting
the STOP bit.
Read/Write accessible. PSE is
set to 1 by H_RESET and is not
affected by S_RESET or setting
the STOP bit.
Read/Write accessible. RCVME
is cleared by H_RESET and is
not affected by S_RESET or set-
ting the STOP bit.
Read/Write accessible. XMTE is
cleared by H_RESET and is not
tion
Am79C976 controller is not func-
tioning in a Link Pass state with
full-duplex operation being en-
abled, a value of 0 is passed to
the LEDOUT signal.
this bit is set, the LED illumination
time is extended for each new oc-
currence of the enabled function
for this LED output. A value of 0
disables the pulse stretcher.
is set, a value of 1 will be passed
to the LEDOUT bit in this register
in Link Pass state.
is cleared by H_RESET and is
not affected by S_RESET or set-
ting the STOP bit.
When this bit is set, a value of 1 is
passed to the LEDOUT bit in this
register when there is receive ac-
tivity on the network that has
passed the address match func-
tion for this node. All address
matching modes are included:
physical, logical filtering, broad-
cast, and promiscuous.
this bit is set, a value of 1 is
passed to the LEDOUT bit in this
register when there is transmit
activity on the network.
Pulse Stretcher Enable. When
Link Status Enable. When this bit
Read/Write accessible. LNKSE
Receive Match Status Enable.
Transmit Status Enable. When
is
enabled.
When
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the