CP2201 datasheet(21/108 Pages) SILABS

Nome de Peças	CP2201

Descrição Electrónicos	SINGLE-CHIP ETHERNET CONTROLLER

PDF	108 Pages

Scroll/Zoom	100%

Fabricante Electrônico	SILABS [Silicon Laboratories]

Página de início	http://www.silabs.com

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21 / 108 page

CP2200/1

Rev. 1.0

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.

CP2201

Asserted when valid link pulses are detected and toggled for 50 ms for

each packet transmitted or received.

LINK

ACT

CP2201 Folha de dados(PDF) 21 Page - Silicon Laboratories