toim3232 ETC-unknow, toim3232 Datasheet

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toim3232

Manufacturer Part Number
toim3232
Description
Infrared Irda Integrated Interface Circuits
Manufacturer
ETC-unknow
Datasheet

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TELEFUNKEN Semiconductors
Rev. A4, 26-Mar-96
Infrared IrDA Integrated Interface Circuits
ULC-Technology: High-performance gate array package using dual metal layer CMOS technology, featuring
sub-micronic channel length (0.8
Description
The TOIM3xxx series ICs provide proper timing for the
front end infrared transceiver TFDS3000, as specified by
the IrDA standard. In the transmit mode, the TOIM3xxx
provides IrDA-compatible electrical pulses to the in-
frared transceiver TFDS3000 on logic LOW electrical
input. In the receive mode, the TOIM3xxx stretches re-
ceived infrared pulses to the proper bit width at the
operating bit rate. The IrDA bit rate varies from 2.4 to
115.2 kbit/s.
D
Features
TOIM3000
D
D
D
D
*)
Block Diagrams
TD_UART
RD_UART
TFDS3000 is an infrared IrDA transceiver made by TEMIC
For the UART interface, the TOIM3000 uses the
1.8432 MHz clock input as the fast clock and the baud
clock output from the UART to do the pulse stretching
and shortening. The baud clock is 16 times the baud
Pulse shaping function (shortening and stretching)
used in infrared IrDA standard applications
Directly interfaces the infrared transceiver
TFDS3000
3 V and 5 V operation with low operating current
SO16L package
B_CLK
RESET
XIN
TOIM3000
*)
to a UART or a microcontroller
V
shaper
CC
Pulse
GND
m
m)
Preliminary Information
TD_IR
TD_232
RD_232
RD_IR
D
The typical power consumption of both circuits is very
low with about 10 mW in operational state. It is in the or-
der of magnitude of microwatts in standby mode.
TOIM3232
D
D
D
D
D
RD_232
TOIM3232
TD_232
RESET
rate. The output pulses are fixed at 1.627
bit time.
For the RS232 interface, the TOIM3232 uses an exter-
nal crystal clock 3.6864 MHz for its pulse stretching
and shortening. The TOIM3232 is programmable to
operate from 1200 bit/s to 115.2 kbit/s by the commu-
nication software through the RS232 port. Output
pulses are software-programmable as either 1.627
or 3/16 of bit time.
Pulse shaping function (shortening and stretching)
used in infrared IrDA standard applications
Directly interfaces the infrared transceiver
TFDS3000
Programmable baud clock generator
(1200 Hz 115 kHz), 13 baud rates
3 V and 5 V operation
SO16L package
BR/D
TOIM3000/3232
*)
to an RS232 port
GND
V
generator
CC
shaper
Pulse
clock
Baud
X1
3.6864 MHz
X2
m
s or 3/16 of
TD_IR
RD_IR
TD_LED
RD_LED
S2
S1
1 (9)
m
s

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toim3232 Summary of contents

Page 1

... TOIM3000/3232 rate. The output pulses are fixed at 1.627 bit time. D For the RS232 interface, the TOIM3232 uses an exter- nal crystal clock 3.6864 MHz for its pulse stretching and shortening. The TOIM3232 is programmable to operate from 1200 bit/s to 115.2 kbit/s by the commu- nication software through the RS232 port. Output pulses are software-programmable as either 1 ...

Page 2

TOIM3000/3232 Pin Description TOIM3000 Pin Symbol 1 RESET Resets all internal registers. Initially must be HIGH to reset internal regis- ters. When LOW, the TOIM3000 connects the UART with IrDA trans- ceiver. Data received from the UART transmits out through ...

Page 3

... RESET Resets all internal registers. Initially must be HIGH (“1”) to reset internal registers. When HIGH, the TOIM3232 sets the IrDA default bit rate of 9600 b/s, sets pulse width to 1.627 power-saving mode. When RESET turns to LOW, the TOIM3232 exits power-saving mode, and sets the baud rate and 1.627 mode ...

Page 4

... The baud rate generator is programmable. A description of programming is given in the Chapter “Soft- ware for the TOIM3232” page 7 (IrDA Design Guide). When BR the TOIM3232 interprets RD_232 data as data transmitted to the TFDS3000. On the other hand, whenever BR the TOIM3232 interprets RD_232 as the control word. The baud rate can be programmed to m operate from 1200 bit/s to 115 kbit/s ...

Page 5

Absolute Maximum Ratings Parameter Symbol Supply voltage V CC Input/ output voltage Output sinking current I out Junction temperature T j Ambient temperature T amb (operating) Storage temperature T stg Soldering temperature T sldr DC Characteristics Specified ...

Page 6

... RD_232 and RD_IR pins as data to be transmitted and received data. On the other hand, when- ever BR the TOIM3232 interprets the seven LSBs at the RD_232 input as the control word. The operating baud rate will change to its supposedly new baud rate when the BR/D returns back to LOW (“ ...

Page 7

... For programming the UART, refer to the National Semiconductor’s data sheet of PC 16550 UART. TELEFUNKEN Semiconductors Rev. A4, 26-Mar-96 Preliminary Information TOIM3000/3232 gramming must be identical with the formerly programmed data rate, or after resetting the TOIM3232, the default rate of 9600 bit/s is used. TD_IR ...

Page 8

TOIM3000/3232 SO16L Package and Pin Assignment of TOIM3000 10.5 Dimensions in mm 10.1 0.49 0.35 1.27 8. (9) Preliminary Information 9.25 8.75 2.45 2.70 0.3 2.25 2.45 0.2 0.25 7.5 0.10 7.3 10.56 10.15 technical drawings according to ...

Page 9

Ozone Depleting Substances Policy Statement It is the policy of TEMIC TELEFUNKEN microelectronic GmbH to 1. Meet all present and future national and international statutory requirements. 2. Regularly and continuously improve the performance of our products, processes, distribution and operating ...

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