- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄366551 > AM79C984 (Advanced Micro Devices, Inc.) enhanced Integrated Multiport Repeater (eIMR⑩) PDF資料下載
參數(shù)資料
| 型號： | AM79C984 |
| 廠商： | Advanced Micro Devices, Inc. |
| 英文描述： | enhanced Integrated Multiport Repeater (eIMR⑩) |
| 中文描述： | 強(qiáng)化的綜合多端中繼器（eIMR⑩） |
| 文件頁數(shù)： | 25/44頁 |
| 文件大小： | 222K |
| 代理商： | AM79C984 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁當(dāng)前第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁
P R E L I M I N A R Y
Am79C984A
25
Disable Automatic Receiver Polarity Reversal (Per TP
Port)
SI Data
0110 00##
SO Data
None
This command disables the Automatic Receiver Polarity
Reversal function for the TP port designated by the two
least-significant bits in the command byte. If this func-
tion is disabled on a TP port receiving with reversed
polarity (due to a wiring error), the TP port will fail the
Link Test due to the incorrect polarity of the received
Link pulses.
The state of Automatic Polarity Reversal function is set
by SI on reset. If SI is HIGH at the rising edge of RST,
the eIMR device disables Automatic Polarity Reversal.
If SI is LOW at the rising edge of RST, the eIMR device
enables Automatic Polarity Reversal.
Enable Automatic Receiver Polarity Reversal (Per TP
Port)
SI Data
0111 00##
SO Data
None
This command enables the Automatic Receiver Polarity
Reversal function for the TP port designated by the two
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.
Disable Receiver Extended Distance Mode (Per TP
Port)
SI Data
0110 10##
SO Data
None
This command disables the Receiver Extended
Distance Mode and restores the RXD circuit of the trans-
ceiver to normal squelch levels for the TP port driver
designated by the two least-significant bits of the com-
mand data.
Enable Receiver Extended Distance Mode (Per TP Port)
SI Data
0111 10##
SO Data
None
This command modifies the RXD circuit of the trans-
ceiver for the TP port driver designated by the two least-
significant bits of the command data. The RXD squelch-
threshold value is lowered to accommodate signal at-
tenuation associated with lines longer than 100 meters.
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
1001 ####
None
This command disables Software Override of the Port
LEDs.
Individual LEDs and combinations of LEDs can be
selected via the lower four bits of the command byte as
follows:
####
0000-0011 TP0 - TP3
0100-0111 Reserved
1000
1001
1010
1011
1100
1101
1110
1111
Port(s) affected
AUI port
Reserved
Reserved
All TP ports
All ports
Global
Reserved
Reserved
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
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:
####
0000-0011 TP0 - TP3
0100-0111 Reserved
1000
1001
1010
1011
1100
1101
1110
1111
Port(s) affected
AUI port
Reserved
Reserved
All TP ports
All ports
Global
Reserved
Reserved
The designated LED driver(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
ride of LEDs is disabled after reset.
0-2
. Software Over-
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AM79C984A | enhanced Integrated Multiport Repeater (eIMR⑩) |
| AM79C984AJC | enhanced Integrated Multiport Repeater (eIMR⑩) |
| AM79C984AKCW | Circular Connector; No. of Contacts:6; Series:MS27474; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:8; Circular Contact Gender:Pin; Circular Shell Style:Jam Nut Receptacle; Insert Arrangement:8-35 RoHS Compliant: No |
| AM79C985JC | enhanced Integrated Multiport Repeater Plus (eIMR+⑩) |
| AM79C985 | enhanced Integrated Multiport Repeater Plus (eIMR+⑩) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AM79C984A | 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:enhanced Integrated Multiport Repeater (eIMR⑩) |
| AM79C984AJC | 制造商:Advanced Micro Devices 功能描述:AM79C984AJC - Bulk 制造商:Rochester Electronics LLC 功能描述: |
| AM79C984AKC\\W | 制造商:Advanced Micro Devices 功能描述: 制造商:Rochester Electronics LLC 功能描述: |
| AM79C984AKC\W | 制造商:Advanced Micro Devices 功能描述: 制造商:Rochester Electronics LLC 功能描述: |
| AM79C984AKCW | 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:enhanced Integrated Multiport Repeater (eIMR⑩) |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。