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參數(shù)資料
| 型號： | 9860 |
| 廠商： | Intel Corp. |
| 英文描述： | Advanced 10/100 Repeater with Intergrated Management |
| 中文描述： | 高級10/100中繼器與綜合管理 |
| 文件頁數(shù)： | 42/118頁 |
| 文件大?。?/td> | 1648K |
| 代理商： | 9860 |
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LXT9860/9880
—
Advanced 10/100 Repeater with Integrated Management
42
Datasheet
Document #: 248987
Revision#: 003
Rev Date: 08/07/01
3.7.5
Direct Drive LEDs
The LXT98x0 provides three direct drive LEDs for each port (PORT
n
_LED1:3), excluding the two
MII ports. Four additional segment LEDs indicate Collision 10/100 and Activity 10/100. The per-
port LEDs are updated simultaneously to illustrate clear, non-overlapping status.
The following device pins are multifunctional (input = configuration; output = LED driver):
COL10_LED (185), COL100_LED (186), ACT10_LED (183), ACT100_LED (184), and,
PORT8_LED2 (175) . The LED drive level is determined by the particular input configuration
function of the respective pin. Collision and Activity indications for both 10 Mbps and 100 Mbps
segments are available in both serial and direct drive.
Direct Drive LED outputs can be overridden by software control. Two bits per port configure the
LEDs to one of four states:
LED Off
LED On
LED Fast Blink
LED Under Hardware Control
3.7.6
LED Modes
The four available LED modes are described in
Table 15 - Table 18
. Hardware pins provide global
LED mode control. Refer to
Table 8 on page 27
for pin assignments and signal descriptions.
Software can configure each port individually to operate in any mode. Refer to
“
Port LED Control
Register
”
on page 111
.
“
LED Global Control Register
”
on page 111
outlines how the Global LEDs
are similarly controlled.
Table 14
defines terms used to describe LED operation.
Table 13. ACTGLED Display Modes
LED
LEDABGSEL = 0
(Base-10)
LEDABGSEL = 1
(Base-2)
ACTG 8
60+% Activity
80+% Activity
ACTG 7
50% Activity
64% Activity
ACTG 6
40% Activity
32% Activity
ACTG 5
30% Activity
16% Activity
ACTG 4
20% Activity
8% Activity
ACTG 3
10% Activity
4% Activity
ACTG 2
5% Activity
2% Activity
ACTG 1
1% Activity
1% Activity
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|---|---|
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