Overview
The TIR1000IPWRG4, produced by Texas Instruments, is a standalone IrDA (Infrared Data Association) encoder and decoder. This device is designed to facilitate serial infrared data communication and serves as an interface between wireless infrared and UART (Universal Asynchronous Receiver-Transmitter) communication. It operates in compliance with IrDA specifications, particularly at the 115.2 kbps rate, ensuring downward compatibility with other IrDA protocols. The TIR1000IPWRG4 requires an optoelectronics device and a UART device for proper operation.
Key Specifications
| Parameter | Description |
|---|---|
| Package Type | 8-Terminal Plastic Small Outline TSSOP (PSOP) |
| Package Size | 3.00 mm × 4.40 mm (TSSOP), 6.20 mm × 5.30 mm (PS Package) |
| Data Rates | 115.2 kbps, 0.576 Mbps, 1.152 Mbps, 4 Mbps (with 115.2 kbps as the primary rate) |
| Clock Frequency | 16 times the baud rate, maximum 1.843 MHz |
| Pulse Width | At least 1.6 μs wide and 3 clock cycles long at 1.843 MHz |
| IR_TXD | Transmitter output intended to drive an LED circuit to generate an infrared pulse |
| IR_RXD | Receiver input that can decode either negative or positive pulses |
| RoHS Compliance | Compliant with EU RoHS requirements |
Key Features
- Encodes and decodes bit data according to IrDA specifications.
- Operates as an interface between wireless infrared and UART communication.
- Supports multiple data rates with primary operation at 115.2 kbps.
- Simple protocol implementation at 115.2 kbps rate.
- Can decode either negative or positive pulses on IR_RXD.
- Transmitter output (IR_TXD) drives an LED circuit to generate infrared pulses.
Applications
- UART Interfacing: Facilitates communication between UART devices and infrared interfaces.
- Infrared Data Communications: Enables serial infrared data transfer in various applications.
- Wireless Communication Systems: Used in systems requiring wireless data transfer via infrared.
Q & A
- What is the primary function of the TIR1000IPWRG4?
The primary function of the TIR1000IPWRG4 is to encode and decode bit data according to IrDA specifications, serving as an interface between wireless infrared and UART communication.
- What are the supported data rates for the TIR1000IPWRG4?
The device supports data rates of 115.2 kbps, 0.576 Mbps, 1.152 Mbps, and 4 Mbps, with 115.2 kbps being the primary rate.
- What is the significance of the 115.2 kbps data rate?
The 115.2 kbps rate is the initial specified rate by IrDA and ensures downward compatibility with other IrDA protocols.
- How does the TIR1000IPWRG4 handle pulse encoding and decoding?
The device encodes a 1 by not sending or receiving a pulse for a 1-bit time period and encodes a 0 by sending or receiving a pulse within a 1-bit time period. The pulse must be at least 1.6 μs wide and 3 clock cycles long at 1.843 MHz.
- What is the purpose of the IR_TXD output?
The IR_TXD output is intended to drive an LED circuit to generate an infrared pulse.
- Can the TIR1000IPWRG4 decode both negative and positive pulses?
Yes, the TIR1000IPWRG4 can decode either negative or positive pulses on the IR_RXD input.
- What type of packages are available for the TIR1000IPWRG4?
The device is available in 8-Terminal Plastic Small Outline TSSOP (PSOP) packages with dimensions of 3.00 mm × 4.40 mm and 6.20 mm × 5.30 mm for the PS package.
- Is the TIR1000IPWRG4 RoHS compliant?
Yes, the TIR1000IPWRG4 is compliant with EU RoHS requirements.
- What are the typical applications of the TIR1000IPWRG4?
The device is typically used in UART interfacing, infrared data communications, and wireless communication systems.
- Is the TIR1000IPWRG4 recommended for new designs?
No, the TIR1000IPWRG4 is not recommended for new designs; it is in production to support existing customers only.
