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參數(shù)資料
| 型號： | AM79C985JC |
| 廠商： | ADVANCED MICRO DEVICES INC |
| 元件分類： | 網(wǎng)絡(luò)接口 |
| 英文描述： | enhanced Integrated Multiport Repeater Plus (eIMR+⑩) |
| 中文描述： | DATACOM, ETHERNET TRANSCEIVER, PQCC84 |
| 封裝： | PLASTIC, LCC-84 |
| 文件頁數(shù)： | 28/48頁 |
| 文件大?。?/td> | 260K |
| 代理商： | AM79C985JC |
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Am79C985
P R E L I M I N A R Y
Enable Automatic Receiver Polarity Reversal (Per TP
Port)
SI Data
0111 0###
SO Data (Pri)
None
SO Data (Sec)
None
This command enables the Automatic Receiver Polarity
Reversal function for the TP port designated by the three
least-significant bits in the command byte. If enabled in
a TP port, the eIMR+ chip will automatically invert the
polarity of that port’s receiver circuitry if the TP port is
detected as having reversed polarity (due to wiring er-
ror). After reversing the receiver polarity, the TP port
could then receive subsequent (reverse polarity) packets
correctly. Designated port values of b111 through b100
in the command byte correspond to TP7 through TP4 in
the primary eIMR+ device. Designated port values of
b011 through b000 in the command byte correspond to
TP3 through TP0 in the secondary eIMR+ device.
Disable Receiver Extended Distance Mode (Per TP
Port)
SI Data
0110 1###
SO Data (Pri)
None
SO Data (Sec)
None
This command disables the Receiver Extended Dis-
tance Mode and restores the RXD circuit of the trans-
ceiver to normal squelch levels for the TP-port driver
designated by the three least-significant bits of the com-
mand data. Designated port values of b111 through
b100 in the command byte correspond to TP7 through
TP4 in the primary eIMR+ device. Designated port val-
ues of b011 through b000 in the command byte corre-
spond to TP3 through TP0 in the secondary eIMR+
device.
Enable Receiver Extended Distance Mode (Per TP
Port)
SI Data
0111 1###
SO Data (Pri)
None
SO Data (Sec)
None
This command modifies the RXD circuit of the trans-
ceiver for the TP-port driver designated by the three
least-significant bits of the command data. The RXD
squelch-threshold value is lowered to accommodate
signal attenuation associated with lines longer than 100
meters. Designated port values of b111 through b100
in the command byte correspond to TP7 through TP4
in the primary eIMR+ device. Designated port values of
b011 through b000 in the command byte correspond to
TP3 through TP0 in the secondary eIMR+ device. At
reset, Receiver Extended Distance Mode is disabled
and the RXD circuit defaults to normal squelch-thresh-
old values.
Disable Software Override of LEDs
(Per Port - AUI and TP Global)
SI Data
SO Data (Pri)
SO Data (Sec)
1001 ####
None
None
This command Disables software override of the Port
LEDs.
Individual LEDs and combinations of LEDs can be se-
lected via the lower four bits of the command byte, as
follows:
####
0000-0111 TP0 - TP7
1000
1001
1010
1011
1100
1101
1110
1111
Port(s) affected
Primary AUI
Secondary AUI
Both AUI ports
All TP ports
All ports
Primary Global
Secondary Global
All Global
Following command execution, the attributes displayed
on the LEDs will be determined by LDC
override of LEDs is disabled after reset.
0-2
. Software
Enable Software Override of Bank-A LEDs (Per Port -
AUI and TP Global)
SI Data
1011 ####
SO Data (Pri)
None
SO Data (Sec)
None
This command forces the LEDs in Bank A to blink. In-
dividual LEDs and combinations of LEDs can be select-
ed via the lower four bits of the command byte, as
follows:
####
0000-0111 TP0 - TP7
1000
1001
1010
1011
1100
1101
1110
1111
Port(s) affected
Primary AUI
Secondary AUI
Both AUI ports
All TP ports
All ports
Primary Global
Secondary Global
All Global
The designated LED drivers(s) will switch between
LOW and ‘off’ at the rate set by the Software Override
Blink Rate command. Enable Software Override of
Bank A LEDs references the blink rate last issued, and
overrides any other attribute specified by LDC
ware override of LEDs is disabled after reset.
0-2
. Soft-
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AM79C985 | enhanced Integrated Multiport Repeater Plus (eIMR+⑩) |
| AM79C985KCW | enhanced Integrated Multiport Repeater Plus (eIMR+⑩) |
| AM79C987 | Hardware Implemented Management Information Base (HIMIB) Device |
| AM79C987JC | Hardware Implemented Management Information Base (HIMIB) Device |
| AM79C987JCB | Hardware Implemented Management Information Base (HIMIB) Device |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AM79C985KCW | 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:enhanced Integrated Multiport Repeater Plus (eIMR+⑩) |
| AM79C985WW WAF | 制造商:Advanced Micro Devices 功能描述: |
| AM79C987 | 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:Hardware Implemented Management Information Base (HIMIB) Device |
| AM79C987JC | 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:Hardware Implemented Management Information Base (HIMIB) Device |
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