参数资料
型号: CP2200-GQR
厂商: SILICON LABORATORIES
元件分类: 微控制器/微处理器
中文描述: 1 CHANNEL(S), LOCAL AREA NETWORK CONTROLLER, PQFP48
封装: 9 X 9 MM, LEAD FREE, TQFP-48
文件页数: 23/108页
文件大小: 1432K
代理商: CP2200-GQR
CP2200/1
Rev. 1.0
21
6.5. LED Control
The CP2200/1 can be used to control link status and activity LEDs. The CP2200 (48-pin TQFP) has two push-pull
LED drivers that can source up to 10 mA each. The CP2201 (28-pin QFN) has a single push-pull LED driver that
turns the LED on or off based on the link status and blinks the LED when activity is detected on a good link. Table 9
shows the function of the LED signals available on the CP2200/1.
Figure 12 shows a typical LED connection for the CP2200. The CP2201 uses an identical connection for the LA
(link/activity) pin. The LED drivers are enabled and disabled using the IOPWR register on page 45.
Figure 12. LED Control Example (CP2200)
Table 9. LED Control Signals
Signal
Device
Description
LINK
CP2200
Asserted when valid link pulses are detected.
ACT
CP2200
Asserted for 50 ms for each packet transmitted or received.
LA
CP2201
Asserted when valid link pulses are detected and toggled for 50 ms for
each packet transmitted or received.
LINK
ACT
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