參數(shù)資料
型號(hào)： 9880
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)： 46/118頁
文件大小： 1648K
代理商： 9880
LXT9860/9880
—
Advanced 10/100 Repeater with Integrated Management
46
Datasheet
Document #: 248987
Revision#: 003
Rev Date: 08/07/01
3.7.6.3
LED Mode 3
Mode 3 operations are described in
Table 17
.
Table 17. LED Mode 3 Indications
LED
Operating Mode
Hardware Control
Software
Control
On
Blink
Off
PORT
n
LED1
10 Mbps operation
Link_OK, not
Port_Partitioned
N/A
Any other state
Off via port
LED Control
Register
100 Mbps operation
PORT
n
LED2
10 Mbps or 100 Mbps
ops
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
100 Mbps mode
selected
(Link_Enabled)
N/A
10 Mbps mode
selected
(Link_Enabled)
Auto-negotiate
disabled
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 is 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
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_Present,
RPS_Fault
N/A
Manager
Present
Mgr_Present
N/A
Not
Mgr_Present
N/A
1. Refer to Table
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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