TOIM3232 Interface Circuits Datasheet

TOIM3232 Datasheet, PDF, Equivalent


Part Number

TOIM3232

Description

Infrared IrDA Integrated Interface Circuits

Manufacture

TEMIC Semiconductors

Total Page 9 Pages
Datasheet
Download TOIM3232 Datasheet


TOIM3232
TOIM3000/3232
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 mm)
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 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
rate. The output pulses are fixed at 1.627 ms or 3/16 of
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 1.627 ms
or 3/16 of bit time.
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.
Features
TOIM3000
D Pulse shaping function (shortening and stretching)
used in infrared IrDA standard applications
D Directly interfaces the infrared transceiver
TFDS3000*) to a UART or a microcontroller
D 3 V and 5 V operation with low operating current
D SO16L package
*) TFDS3000 is an infrared IrDA transceiver made by TEMIC
Block Diagrams
TOIM3232
D Pulse shaping function (shortening and stretching)
used in infrared IrDA standard applications
D Directly interfaces the infrared transceiver
TFDS3000*) to an RS232 port
D Programmable baud clock generator
(1200 Hz 115 kHz), 13 baud rates
D 3 V and 5 V operation
D SO16L package
XIN
B_CLK
VCC
Pulse
shaper
TD_UART
RD_UART
RESET
TOIM3000
GND
TD_IR
RD_IR
TD_232
RD_232
TD_232
RD_232
BR/D
RESET
VCC
Pulse
shaper
Baud
clock
generator
TD_IR
RD_IR
TD_LED
RD_LED
S1
S2
TOIM3232
GND X1
X2
3.6864 MHz
TELEFUNKEN Semiconductors
Rev. A4, 26-Mar-96
Preliminary Information
1 (9)

TOIM3232
TOIM3000/3232
Pin Description TOIM3000
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
*)
Symbol
Function
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 the infrared
transmitter. Data received from the infrared receiver is routed to the
UART. When HIGH, the TOIM3000 connects the UART with the RS232
port. Data received from the UART transmits out through the RS232 port,
while data received from the RS232 port is routed to the UART. Minimum
hold time for reset is 1 ms.
RD_UART Received data to the UART
TD_UART Data fom the UART to be transmitted
B_CLK 16 times baud rate clock, input from the UART (Baudout)
XIN Oscillator input, 1.8432 MHz clock (to be connected to Xout pin of the
UART)
NC No connection
NC No connection
GND Ground in common with the UART and RS232 port
S0 Must be connected to GND
S1
RD_232
Must be connected to GND for output pulse length of 1.627 ms,
Connected to VCC for pulse length of 3/16 of bit *)
Data input from the RS232 port, RXD pin
TD_232 Data output to the RS232 port, TXD pin
NC No connection
TD_IR Data output to infrared transmitter TFDS3000
RD_IR Data receive input from the infrared transmitter TFDS3000
VCC Supply voltage
I/Q Active
I
O LOW
I LOW
I
I
I LOW
O LOW
O HIGH
I LOW
The use of a pulse length of 3/16 of bit duration is not recommended when both clocks, Xout and Baudout,
of the UART are available
2 (9) TELEFUNKEN Semiconductors
Preliminary Information
Rev. A4, 26-Mar-96


Features TOIM3000/3232 Infrared IrDA Integrated I nterface Circuits ULC-Technology: High- performance gate array package using du al metal layer CMOS technology, featuri ng sub-micronic channel length (0.8 mm) Description The TOIM3xxx series ICs p rovide proper timing for the front end infrared transceiver TFDS3000, as speci fied by the IrDA standard. In the trans mit mode, the TOIM3xxx provides IrDA-co mpatible electrical pulses to the infra red transceiver TFDS3000 on logic LOW e lectrical input. In the receive mode, t he TOIM3xxx stretches received infrared pulses to the proper bit width at the operating bit rate. The IrDA bit rate v aries from 2.4 to 115.2 kbit/s. rate. T he output pulses are fixed at 1.627 ms or 3/16 of bit time. D For the RS232 i nterface, the TOIM3232 uses an external crystal clock 3.6864 MHz for its pulse stretching and shortening. The TOIM323 2 is programmable to operate from 1200 bit/s to 115.2 kbit/s by the communicat ion software through the RS232 port. Output pulses are software.
Keywords TOIM3232, datasheet, pdf, TEMIC Semiconductors, Infrared, IrDA, Integrated, Interface, Circuits, OIM3232, IM3232, M3232, TOIM323, TOIM32, TOIM3, Equivalent, stock, pinout, distributor, price, schematic, inventory, databook, Electronic, Components, Parameters, parts, cross reference, chip, Semiconductor, circuit, Electric, manual, substitute




@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site (Privacy Policy & Contact)