P R E L I M I N A R Y
AMD
1-418
Am79C960
ISACSR6:
LED2
Status
Bit
Name
Description
ISACSR6 controls the func-
tion(s) that the
LED2
pin
displays. Multiple functions can
be simultaneously enabled on
this LED pin. The LED display will
indicate the logical OR of the en-
abled
functions.
defaults to twisted pair MAU Re-
ceive Polarity (RCVPOL) with
pulse stretcher enabled (PSE =
1) and is fully programmable.
Indicates the current (non-
stretched) state of the function(s)
generated. Read only.
Reserved locations. Read and
written as zero.
Pulse Stretcher Enable. Extends
the LED illumination for each en-
abled function occurrence.
0 is disabled, 1 is enabled.
Reserved locations. Read and
written as zero.
Enable Transmit Status Signal.
Indicates PCnet-ISA controller
transmit activity .
0 disables the signal, 1 enables
the signal.
Enable Receive Polarity Signal.
Enables LED pin assertion when
receive polarity is correct on the
10BASE-T port. Clearing the bit
indicates this function is to
be ignored.
Enable Receive Status Signal.
Indicates receive activity on the
network.
0 disables the signal, 1 enables
the signal.
Enable Jabber Signal. Indicates
the PCnet-ISA controller is jab-
bering on the network.
0 disables the signal, 1 enables
the signal.
Enable Collision Signal. Indi-
cates collision activity on the
network.
0 disables the signal, 1 enables
the signal.
ISACSR6
15
LEDOUT
14-8
RES
7
PSE
6-5
RES
4
XMT E
3
RVPOL E
2
RCV E
1
JAB E
0
COL E
ISACSR7:
LED3
Status
Bit
Name
Description
ISACSR7 controls the func-
tion(s) that the
LED3
pin
displays. Multiple functions can
be simultaneously enabled on
this LED pin. The LED display will
indicate the logical OR of the en-
abled
functions.
defaults to Transmit Status
(XMT) with pulse stretcher en-
abled (PSE = 1) and is fully
programmable.
Indicates the current (non-
stretched) state of the function(s)
generated. Read only.
Reserved locations. Read and
written as zero.
Pulse Stretcher Enable. Extends
the LED illumination for each en-
abled function occurrence.
0 is disabled, 1 is enabled.
Reserved locations. Read and
written as zero.
Enable Transmit Status Signal.
Indicates PCnet-ISA controller
transmit activity .
0 disables the signal, 1 enables
the signal.
Enable Receive Polarity Signal.
Enables LED pin assertion when
receive polarity is correct on the
10BASE-T port. Clearing the bit
indicates this function is to
be ignored.
Enable Receive Status Signal.
Indicates receive activity on the
network.
0 disables the signal, 1 enables
the signal.
Enable Jabber Signal. Indicates
the PCnet-ISA controller is jab-
bering on the network.
0 disables the signal, 1 enables
the signal.
Enable Collision Signal. Indi-
cates collision activity on the
network.
0 disables the signal, 1 enables
the signal.
ISACSR7
15
LEDOUT
14-8
RES
7
PSE
6-5
RES
4
XMT E
3
RVPOL E
2
RCV E
1
JAB E
0
COL E