TL16PIR552 datasheet(39/52 Pages) TI

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TL16PIR552

DUAL UART WITH DUAL IrDA AND

1284 PARALLEL PORT

SLLS222A – DECEMBER 1995 – REVISED AUGUST 1996

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

PRINCIPLES OF OPERATION

IR encoder and decoder (continued)

IR mode can be chosen through the use of SLR(6) with DLAB = 1. With DLAB = 1 and if SCR(6) = 1, IR mode

is selected. Built in multiplexers are used to choose the correct signal to input to the UART. Refer to Figure 28

for more detail.

Encoder

IR_TX

SOUT

To 232 Port

or IR Module

SCR 6

SIN

To ACE

Decoder

SIN

From 232 Port

IRSIN From IR

Module

SOUT

From UART

Figure 28. TL16PIR552 Mode Select

Encoder

Transmitter

Decoder

Receiver

UART

SOUT

BDOUT

CLK

SIN

RCLK

CLK

IR_TX

IR_RX

Figure 29. TL16PIR552 IR Encoder/Decoder

For encoding, the IR_TX is selected when SCR6 is set to 1. This sends IR_TX on the device SOUT terminal.

This signal can be used as an input to any IR transceiver (see Figure 29).

For decoding, the IRSIN from the device (this can be connected to any IR transceiver) goes through the IR

decode block and then it is the input to the UART (see Figure 29).

TL16PIR552 Datasheet(PDF) 39 Page - Texas Instruments

TL16PIR552 Datasheet(HTML) 39 Page - Texas Instruments

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