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參數(shù)資料
| 型號(hào)： | 9860 |
| 廠商： | Intel Corp. |
| 英文描述： | Advanced 10/100 Repeater with Intergrated Management |
| 中文描述： | 高級(jí)10/100中繼器與綜合管理 |
| 文件頁數(shù)： | 47/118頁 |
| 文件大?。?/td> | 1648K |
| 代理商： | 9860 |
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Advanced 10/100 Repeater with Integrated Management
—
LXT9860/9880
Datasheet
Document #: 248987
Revision#: 003
Rev Date: 08/07/01
47
3.7.6.4
LED Mode 4
Mode 4 operations are described in
Table 18
.
3.8
IRB Operation
The Inter-Repeater Backplane (IRB) allows multiple devices to operate as a single logical repeater,
exchanging data and collision status information. Each segment on the LXT98x0 has its own
complete, independent IRB. The backplanes use a combination of digital and analog signals as
shown in
Figure 9 on page 50
.
Table 18. LED Mode 4 Indications
LED
Operating Mode
Hardware Control
1
Software
Control
On
Blink
Off
PORT
n
LED1
10 Mbps operation
Link_OK, not
Port_Partitioned
20 ms Blink
indicates
Rcv_Activity
2
Any other state
Off via port
LED
Control
Register
100 Mbps operation
Any other state
PORT
n
LED2
10 Mbps operation
Link_OK,
Port_Partitioned
N/A
Any other state
100 Mbps operation
PORT
n
LED3
Auto-
neg
enabled
AUTOBLINK
active
100 Mbps Link_OK
No Link_OK
(Fast Blink))
10 Mbps
Link_OK
AUTOBLINK
inactive
N/A
Auto-neg disabled
100 Mbps Mode
selected
(Link_Enabled)
10 Mbps
Link_Enabled
Collision and
Activity LEDs
Any
The collision and activity LEDs are on a Per Segment
basis. Pulse stretchers are used to extend the on-time
for the LEDs. For every on-cycle of the stretched
LEDs, an off-cycle, with the same period as the on-
cycle, always follows.
The collision LEDs turn on for approximately 120
μ
s
when the LXT98x0 detects a collision on the
segments. During the time that the LED is on, any
additional collisions are ignored by the collision LED
logic.
The activity LEDs turns on for approximately 4 ms
when the LXT98x0 detects any activity on the
segments. During the time that the LED is on, any
additional activity is ignored by the activity LED logic.
N/A
Global
Fault
Any
Any port partitioned
or
RPS_Fault and
RPS_ Present
N/A
Any other state
Off via
global LED
Control
Register
RPS Fault
RPS_Fault and
RPS_ Present
N/A
Manager
Present
Mgr_Present
N/A
Not
Mgr_Present
1. Refer to
Table 14
: LED Terms, which defines all key terms used in this section.
2. Receive activity is stretched to a 20 ms wide pulse. For every on-cycle of the stretched LEDs, an off-cycle,
with the same period as the on-cycle, always follows.
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