參數(shù)資料
型號： 9880
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)： 45/118頁
文件大?。?/td> 1648K
代理商： 9880
Advanced 10/100 Repeater with Integrated Management
—
LXT9860/9880
Datasheet
Document #: 248987
Revision#: 003
Rev Date: 08/07/01
45
3.7.6.2
LED Mode 2
Mode 2 operations are described in
Table 16
.
Table 16. LED Mode 2 Indications
LED
Operating
Mode
Hardware Control
1
Software
Control
On
Blink
Off
PORT
n
LED1
Any
10 Mbps:
Port_Enabled,
Link_OK, not
Port_Partitioned
100 Mbps:
Port_Enabled,
Link_OK, not
Port_Partitioned
10 Mbps:
Port_Enabled,
Link_OK, and
Port_Partitioned
(slow blink)
100 Mbps:
Port_Enabled,
Port_Partitioned
(Slow Blink)
Any other state
On, Off or
Fast Blink
via Port
LED
Control
Register
PORT
n
LED2
Rcv_Activity
(20 ms pulse)
2
N/A
Any other state
N/A
PORT
n
LED3
Auto-
negotiate
enabled
AUTOBLINK
active
100 Mbps
Link_OK
No Link_OK
(Fast Blink)
10 Mbps
Link_OK
Off via Port
LED
Control
Register
AUTOBLINK
inactive
N/A
Auto-negotiate disabled
100 Mbps mode
selected
(Link_Enabled)
10 Mbps mode
selected
(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 turn 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
Manager
Present
Any
N/A
N/A
Always Off
N/A
RPS
RPS_Present,
no RPS_Fault
RPS_Present,
RPS_Fault
(Slow Blink)
Not
RPS_Present
N/A
Global
FAULT
N/A
Any
Port_Partitioned,
any Port Isolated
or
RPS_Fault and
RPS_Present
(Slow Blink)
Any other state
On, off, or
slow blink
via global
LED
Control
Register
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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