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): 39/118頁
文件大小: 1648K
代理商: 9860
Advanced 10/100 Repeater with Integrated Management
LXT9860/9880
Datasheet
Document #: 248987
Revision#: 003
Rev Date: 08/07/01
39
3.7
LED Operation
The LXT98x0 drives the most commonly used LEDs directly (see
Direct Drive LEDs
on
page 42
). The less frequently used LEDs are optionally driven via a serial bus to inexpensive
Serial-to-Parallel devices (see
Serial LEDs
on this page).
3.7.1
LEDs at Start-up
For approximately 2 seconds after the LXT98x0 is reset, all LEDs are driven to the ON state. This
start-up routine is an LED check.
3.7.2
LED Event Stretching
Short lived LED status events are stretched so they may be observed by the human eye. Refer to the
LED1, 2, 3 Modes section for stretching specifics.
3.7.3
LED Blink Rates
Two programmable blink rates are provided. The default period for the slow blink rate is 1.6s. The
default period is 0.4s for the fast blink rate. These rates may be changed via the LED Timer Control
Register. The slow blink rate is defined by the upper 8 bits and the fast blink rate is defined by the
lower 8 bits of the LED Timer Control Register. Refer to
LED Timer Control Register
on
page 112
for details.
100 Mbps IRB
10 Mbps IRB
IR100CFS
IR10DAT
IR100CFSBP
IR10ENA
IR100DV
IR10COL
IR100CLK
IR10CFS
IR10COLBP
IR10CFSBP
Figure 5. LED Blink Rates
Time
On Solid
Slow Blink
Fast Blink
Off
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