TOIM3232

TOIM3232 Vishay Telefunken Integrated Interface Circuits ULC Technology: High-performance gate array package using dual metal layer CMOS technology, featuring sub-micron channel length (0.8 mm) Description The TOIM3232 IC provides proper pulse shaping for the front end infrared transceivers of the 3000- and 4000-series (3000- and 4000-series devices are infrared transceiver compliant to the IrDA standard made by Vishay Telefunken), as specified by the IrDA standard. In the transmit mode, the TOIM3232 shortens the RS232 output signal to IrDA compatible electrical pulses to drive the infrared. In the receive mode, the TOIM3232 stretches the received infrared pulses to the proper bit width at the operating bit rate. The IrDA bit rate varies between 2.4 kbit/s to 115.2 kbit/s. The TOIM3232 is using a crystal clock 3.6864 MHz for its pulse stretching and shortening. The clock can be generated by the internal oscillator or an external clock can be used, too. The TOIM3232 is programmable to operate from 1200 bit/s to 115.2kbit/s by the communication software through the RS232 port. The output pulses are software programmable as either 1.627 ms or 3/16 of bit time. The typical power consumption is very low with about 10 mW in operational state and in the order of a few microwatts in standby mode. Features D Pulse shaping function (shortening and stretching) used in infrared IrDA standard applications D Programmable baud clock generator D D (1200 Hz to 115 kHz), 13 baud rates SO16...