AM79C978 Advanced Micro Devices, AM79C978 Datasheet - Page 154
AM79C978
Manufacturer Part Number
AM79C978
Description
Single-Chip 1/10 Mbps PCI Home Networking Controller
Manufacturer
Advanced Micro Devices
Datasheet
1.AM79C978.pdf
(261 pages)
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12
11-10 RES
9
8
7
154
100E
MPSE
FDLSE
PSE
will be governed by the LEDOUT
and LEDPOL values.
100 Mbps Enable. When this bit
is set to 1, a value of 1 is passed
to the LEDOUT bit in this register
when the Am79C978 controller is
operating at 100 Mbps mode.
Reserved locations. Written and
read as zeros.
Magic Packet Status Enable.
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.
Full-Duplex Link Status Enable.
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 Am79C978
controller is functioning in a Link
Pass state and full-duplex opera-
tion
Am79C978 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.
Pulse Stretcher Enable. When
this bit is set, the LED illumination
This bit is always read/write ac-
cessible. LEDDIS is cleared by
H_RESET and is not affected by
S_RESET or setting the STOP
bit.
This bit is always read/write ac-
cessible. 100E is cleared by
H_RESET and is not affected by
S_RESET or setting the STOP
bit.
This bit is always read/write ac-
cessible. MPSE is cleared by
H_RESET and is not affected by
S_RESET or setting the STOP
bit.
This bit is always read/write ac-
cessible. FDLSE is cleared by
H_RESET and is not affected by
S_RESET or setting the STOP
bit.
is
enabled.
When
the
Am79C978
6
5
4
3
2
LNKSE
RCVME
XMTE
POWER
RCVE
time is extended for each new oc-
currence of the enabled function
for this LED output. A value of 0
disables the pulse stretcher.
This bit is always read/write ac-
cessible. PSE is set to 1 by
H_RESET and is not affected by
S_RESET or setting the STOP
bit.
Link Status Enable. When this bit
is set, a value of 1 will be passed
to the LEDOUT bit in this register
in Link Pass state.
This bit is always read/write ac-
cessible. LNKSE is cleared by
H_RESET and is not affected by
S_RESET or setting the STOP
bit.
Receive Match Status Enable.
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 always read/write ac-
cessible. RCVME is cleared by
H_RESET and is not affected by
S_RESET or setting the STOP
bit.
Transmit Status Enable. When
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.
This bit is always read/write ac-
cessible. XMTE is set to 1 by
H_RESET and is not affected by
S_RESET or setting the STOP
bit.
Power. When this bit is set to 1,
the device is operating in HIGH
power mode.
Receive Status Enable. When
this bit is set, a value of 1 is
passed to the LEDOUT bit in this
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