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參數(shù)資料
| 型號： | LXT9880HC |
| 英文描述： | Controller Miscellaneous - Datasheet Reference |
| 中文描述： | 控制器雜項-數(shù)據(jù)表參考 |
| 文件頁數(shù)： | 17/96頁 |
| 文件大?。?/td> | 1309K |
| 代理商： | LXT9880HC |
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LXT980/980A Dual-Speed, 5-Port Fast Ethernet Repeater
Datasheet
17
86
COL100_LED
TTL
Output
100 Mbps Collision LED Driver.
Active Low indicates collision on 100 Mbps
segment.
87
MGR_LED
TTL
Output
Manager Present LED Driver.
Active Low indicates Manager present.
90
ACT10_LED
TTL
Output
10 Mbps Activity LED Driver.
Active Low indicates activity on 10 Mbps segment.
91
ACT100_LED
TTL
Output
100 Mbps Activity LED Driver.
Active Low indicates activity on 100 Mbps segment.
92
FAULT_LED
TTL
Output
Fault LED Driver.
Active Low indicates global fault.
98
RPS_LED
TTL
Output
Redundant Power Supply LED Driver.
Active Low indicates RPS fault.
Table 9. Power Supply and Indication Signal Descriptions
Pin
Symbol
Type
1
Description
12, 28, 35,
51, 57, 76,
84, 89, 96,
170, 201,
203-206
VCC
Digital
Power Supply Inputs.
Each of these pins must be connected to a common
+5 VDC power supply. A de-coupling capacitor to digital ground should be
supplied for every one of these pins.
2, 11, 34,
50, 75, 82,
83, 88, 93,
158, 159,
163, 167,
174, 178,
200, 202
GND
Digital
Ground.
Connect each of these pins to digital ground.
74
GND (
LXT980
only
)
Digital
Ground.
Connect this pin to digital ground.
Note:
For LXT980A, refer to
Table 11 on page 18
.
94, 169
VCCV
Analog
VCO Supply Inputs.
Each of these pins must be connected to a common
+5 VDC power supply. A de-coupling capacitor to GNDV should be supplied for
every one of these pins.
95, 168
GNDV
Analog
VCO Ground
.
111, 124,
139, 152
VCCT
Analog
Transmitter Supply Inputs.
Each of these pins must be connected to a
common +5 VDC power supply. A de-coupling capacitor to GNDT should be
supplied for every one of these pins.
109, 122,
137, 150
GNDT
Analog
Transmitter Ground.
107, 120,
135, 148
VCCR
Analog
Receiver Supply Inputs.
Each of these pins must be connected to a common
+5 VDC power supply. A de-coupling capacitor to GNDR should be supplied for
every one of these pins
104, 117,
132, 145,
GNDR
Analog
Receiver Ground.
1. PU = Input contains pull-up.
PD = Input contains pull-down.
TTL = Transistor-Transistor Logic.
Table 8. LED Signal Descriptions (Continued)
Pin
Symbol
Type
1
Description
1. PD = Input contains pull-down.
TTL = Transistor-Transistor Logic
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