TMPR3911 datasheet(238/462 Pages) TOSHIBA

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Chapter 10 IR Module

10-8

10.5 IR Registers

10.5.1

IR Control 1 Register

OFFSET

= $0A0:

Bit

Label

RESET

Read/Write

31-25

Reserved

CARDET

–

23-16

BAUDVAL[7:0]

R/W

15-5

Reserved

4TESTIR

R/W

DTINVERT

R/W

2RXPWR

R/W

ENSTATE

R/W

ENCONSM

R/W

CARDET:

read-only

This bit provides the status of the CARDET (carrier detect) input pin.

BAUDVAL[7:0]:

These bits are used to pre-scale the IR master clock (IRCLK). The bits are loaded into an 8-bit

down-counter that counts at the IRCLK rate. The resulting baud clock is used to clock the Period

Width Counter and OnTime Width Counter.

TESTIR:

This bit is used to speed up the counters for IC testing and should not be set.

DTINVERT:

Setting this bit to a logic “1” will cause the IROUT signal to be active low instead of active high.

RXPWR:

This bit is connected to the RXPWR pin.

ENSTATE:

Setting this bit to a logic “1” enables the Communication IR carrier detect state machine.

ENCONSM:

Setting this bit to a logic “1” enables the Consumer IR function.

TMPR3911 Datasheet(PDF) 238 Page - Toshiba Semiconductor

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