Microchip | MCP2122-E/SN

The MCP2122 is a stand-alone IrDA standard encoder/ decoder device that is pinout-compatible with the Agilent® HSDL-7000 encoder/decoder. The MCP2122 has two interfaces: the host UART interface and the IR interface (see Figure 1-1). The host UART interfaces to the UART of the Host Controller.

The Host Controller is the device in the embedded system that transmits and receives the data. The IR interface connects to an infrared (IR) optical transceiver circuit that converts electrical pulses into IR light (encode) and converts IR light into electrical pulses (decode). This IR optical transceiver circuit  could be either a standard infrared optical transceiver (such as a Vishay® TFDU 4100) or it could be implemented with
discrete components. For additional information, please refer to AN243, “Fundamentals of the Infrared Physical Layer” (DS00243).

Features:

• Pinout compatible with HSDL-7000
• Compliant with IrDA® Standard Physical Layer Specification (version 1.3)
• UART to IrDA Standard Encoder/Decoder
• Interfaces with IrDA Standard Compliant Transceiver
• Baud Rates:
• Up to IrDA Standard 115.2 Kbaud Operation
• Transmit/Receive Formats (Bit Width) Supported:
• 1.63 μs
• Low-power Mode (2 μA at 1.8 V, +125°C)
• Low power mode, extended temperature range

Applications:

• Data-Logging/Data Exchange
• System Setup
• System Diagnostic Read Out
• Manufacturing Configuration
• Host Controller Firmware Updates
• System Control