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TOIM4232 Datasheet(数据表) 1 Page - Vishay Siliconix

部件型号  TOIM4232
说明  SIR Endec for IrDA Applications Integrated Interface Circuit
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制造商  VISHAY [Vishay Siliconix]
网页  http://www.vishay.com
标志 VISHAY - Vishay Siliconix

TOIM4232 Datasheet(HTML) 1 Page - Vishay Siliconix

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TOIM4232
Document Number 82546
Rev. 1.5, 06-Jun-06
Vishay Semiconductors
www.vishay.com
1
18080
SIR Endec for IrDA Applications
Integrated Interface Circuit
Description
The TOIM4232 Endec IC provides proper pulse shap-
ing for the SIR IrDA® front end infrared transceivers
as of the 4000-series. For transmitting the TOIM4232
shortens the RS232 output signal to IrDA compatible
electrical pulses to drive the infrared transmitter. In
the receive mode, the TOIM4232 stretches the
received infrared pulses to the proper bit width
depending on the operating bit rate. The IrDA bit rate
varies from 2.4 kbit/s to 115.2 kbit/s.The TOIM4232 is
using a crystal clock 3.6864 MHz for its pulse stretch-
ing and shortening. The clock can be generated by
the internal oscillator. An external clock can be used,
too. The TOIM4232 is programmable to operate from
1200 bit/s to 115.2 kbit/s by the communication soft-
ware through the RS232 port. The output pulses are
software programmable as either 1.627 µs 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.
ULC Technology: High performance gate array
package using multiple metal layer CMOS technology
featuring sub-micron channel lengths (0.35 µm).
Features
• Pulse shaping function (shortening
and stretching) used in SIR IrDA®
applications
• Directly interfaces the SIR transceiver
TFD..- and TFB..- series to an RS232 port
• Programmable baud clock generator (1200 Hz to
115.2 kHz), 13 baud rates
• 3/16 bit pulse duration or 1.627 µs pulse select-
able
• SO16 - package
• 2.7 V to 3.6 V operation voltage, 5 V tolerant inputs
• Low operating current
• Lead (Pb)-free device
• Device in accordance to RoHS 2002/95/EC and
WEEE 2002/96EC
Ordering Information
Block Diagram
Part Number
Qty / Reel
TOIM4232-TR1
500 pcs
TD_232
RD_232
BR/D
RESET
TD_IR
RD_IR
TD_LED
RD_LED
Vcc_SD
S2
S1
GND
X1
X2
Vcc
Osci llator
Endec
Baud
Generator
Logic
18079
e3




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