TIR2000 datasheet(58/63 Pages) TI

58 / 63 page

6–2

6.1

Transceiver Connections

The TIR2000 can be connected to an HP or TI transceiver as shown in Figure 6–2. The HP and TI

transceivers which are pin-to-pin compatible have one transmit pin (TXD) and two receive pins (RXD-A and

RXD-B). TXD pin of the transceiver should be connected to the IRTX pin of TIR2000 device. RXD-A pin of

the transceiver should be connected to the IRRVL pin of the TIR2000 device and is used to receive data

in the slow speed IR and TV mode. RXD-B pin of the transceiver should be connected to the IRRVH pin of

the TIR2000 device and is used to receive data in the medium speed IR, high speed IR and SHARP ASK

modes.

HP/TI XCVR

IRTX

IRRVH

IRRVL

TXD

RXD-B

RXD-A

TIR2000

Figure 6–2. HP/TI Transceiver Connection

The TIR2000 can also be connected to a Temic transceiver as shown in Figure 6–3. Connect TXD pin of

the transceiver to IRTX pin of TIR2000 device. The transceiver has only one RXD pin which is used for both

high speed IR as well as slow speed IR operation. Connect RXD pin of the transceiver to IRRVH and IRRVL

of the TIR2000 device. The SD pin of the transceiver needs to be programmed correctly so that it will operate

properly in high speed IR mode. Follow the programming steps for different modes as described next.

TEMIC XCVR

IRTX

GPIO0

IRRVH

TxD

RxD

TIR2000

IRRVL

Figure 6–3. Temic Transceivers

TIR2000 Datasheet(PDF) 58 Page - Texas Instruments