IRCC datasheet(20/79 Pages) SMSC

Nome de Peças	IRCC

Descrição Electrónicos	INFRARED COMMUNICATIONS CONTROLLER

PDF	79 Pages

Scroll/Zoom	100%

Fabricante Electrônico	SMSC [SMSC Corporation]

Página de início	http://www.smsc.com

Logo

20 / 79 page

The SIR Interaction Pulse is controlled by the

IrCC configuration register SIP ENABLE bit and

a timer. The IrCC transmits an SIR Interaction

Pulse every 500ms when the SIP enable is

active, an IrDA FIR mode has been selected,

and the transmitter or receiver is not otherwise

engaged.

The timer that controls the SIP pulse is reset

whenever 1) the SIP enable is inactive, 2) an

active FIR frame is being transmitted or received

or, 3) during an active SIP pulse. The timer is

decrementing whenever the SIP enable bit is

active and the SIP pulse generator, the

transmitter, and the receiver are inactive. When

the timer reaches zero, the SIP pulse generator

is activated (Figure 13).

1.6us

8.7us

SIP

ActiveSIP

Time

FIGURE 12 - SIR INTERACTION PULSE

Active Frame

SIP Enable

Reset SIP

Timer

SIP Timer

Countdown

Active SIP

Time

SIP Timer

Zero

FIGURE 13 - SIP CONTROL TIMING

IRCC Folha de dados(PDF) 20 Page - SMSC Corporation