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 infrared transceiver TFDS3000 on logic LOW electrical input. In the receive mode, the TOIM3xxx stretches received 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. 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 external 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 communication 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 order of magnitude of microwatts in standby mode. 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 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 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 *) TFDS3000 is an infrared IrDA transceiver made by TEMIC Block Diagrams VCC XIN B_CLK VCC TD_IR RD_IR TD_232 RD_232 Pulse shaper Pulse shaper TD_IR RD_IR TD_LED RD_LED TD_UART RD_UART RESET GND TD_232 RD_232 BR/D RESET GND Baud clock generator S1 S2 X1 TOIM3000 TOIM3232 X2 3.6864 MHz TELEFUNKEN Semiconductors Rev. A4, 26-Mar-96 1 (9) Preliminary Information TOIM3000/3232 Pin Description TOIM3000 Pin 1 Function Resets all internal registers. Initially must be HIGH to reset internal registers. When LOW, the TOIM3000 connects the UART with IrDA transceiver. 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 Must be connected to GND for output pulse length of 1.627 ms, Connected to VCC for pulse length of 3/16 of bit *) RD_232 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 Symbol RESET I/Q I Active 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 *) O I I I LOW LOW I O O I LOW LOW HIGH 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) Preliminary Information TELEFUNKEN Semiconductors Rev. A4, 26-Mar-96 TOIM3000/3232 Pin Description TOIM3232 Pin 1 Symbol RESET Function 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 ms. Then the TOIM3232 enters the power-saving mode. When RESET turns to LOW, the TOIM3232 exits power-saving mode, and sets the baud rate and 1.627 ms pulse width mode. In the application, the RESET pin can be controlled by either the RTS or DTR line through RS232 level converter. Minimum hold time for reset is 1 ms. Baud Rate control / Data When BR/D = 0, RD_232 data is transmitted to the IrDA transmitter pin TD_IR, while RD_IR is routed to the transmitter pin TD_232. When BR/D = 1, data received from the RS232 port is interpreted as the control word. The control word programs the baud rate and pulse width of TD_IR signal. The new baud rate and pulse width will be effective as soon as BR/D returns to LOW. Data output of stretched signal to the RS232 port (using level converter); received signal Data input from the RS232 port (passing the level converter); signal to be transmitted VCC shut-down output function. This pin can be used to shut down a transceiver (e.g. TFDS3000). Output polarity: Inverted RESET input. Crystal input clock 3.6864 MHz Crystal input clock Ground in common with the RS232 port and IrDA transceiver ground Transmit LED indicator driver. Use 270 W current limiting resistor in series to LED to connect to VCC (VCC = 5 V). Receive LED indicator driver. Use 270 W current limiting resistor in series to LED to connect to VCC (VCC = 5 V). No connection User-programmable output. Can be used to turn a front end infrared transceiver ON/OFF (e.g. an infrared module at the adapter front). User-programmable output. Can be used to turn a front end infrared transceiver ON/OFF (e.g. an infrared module at the adapter back). Data output of shortened signal to the infrared transceiver TFDS3000 Data input from the infrared transceiver TFDS3000 Supply voltage I/Q I Active HIGH 2 BR/D I 3 4 5 6 7 8 9 10 11 12 13 14 15 16 RD_232 TD_232 VCC_SD X1 X2 GND TD_LED RD_LED NC S1 S2 TD_IR RD_IR VCC O I O I I O O HIGH HIGH LOW LOW LOW O O O I I LOW LOW HIGH LOW TELEFUNKEN Semiconductors Rev. A4, 26-Mar-96 3 (9) Preliminary Information TOIM3000/3232 Application R1 VCC UART OUT1 SIN SOUT XOUT BAUDOUT RESET TOIM3000 SD RD_UART TD_UART XIN B_CLK S0 S1 TD_232 RD_232 TXD RS232 RXD X1 X2 3.6842 MHz RD_IR TD_IR RXD TXD 83 TFDS 3000 pin 4, DTR pin 7, RTS pin 3, TXD pin 2, RXD RESET BR/D TD_UART RD_UART VCC_SD TD_IR RD_IR TFDS3000 VCC TXD RXD VCC R2 C1, C2 RS232 9–pin connector Level converter TOIM3232 Figure 1. TOIM3000 – UART interface (built-in infrared port) Figure 2. TOIM3232 – RS232 port interface (external infrared adapter) Figure 1 shows a typical example of a UART interface. As shown, XIN accepts the 1.8432 MHz input clock, and B_CLK accepts the 16 times baud rate clock. Set S1 = S0 = LOW (“0”). When RESET = 0, the TOIM3000 sends the data to, or receives the data from the infrared transceiver TFDS3000. If Reset is active, RESET = 1, the TOIM3000 handles the normal electrical data exchange with the RS232 port. R1 = 2.2 kW optional (only necessary when RxD–RD IR line is capacitive loaded). R2 = 100 W, R3 = 10 W, C1 = 6.8 mF and C2 = 0.1 mF. C1 and C2 are in parallel (VCC = 5 V, in case of 3 V supply, value of R3 should be reduced, see introductory text). Single clock operation TOIM3000 can be operated with only a single clock. In this case, B_CLK and XIN are tight together and connected to the Baudout pin of the UART. The pulse width is then shortened to 3/16 of the bit length and noise filtering is deactivated. S1 should be connected to VCC and SO to GND. Figure 2 shows a typical example of an RS232 port interface. The TOIM3232 interfaces the RS232 port to an infrared transceiver. Due to the various voltage levels, an additional level converter (discrete or integrated) is necsessary. The baud rate generator is programmable. A description of programming is given in the Chapter “Software for the TOIM3232” page 7 (IrDA Design Guide). When BR/D = 0, the TOIM3232 interprets RD_232 data as data transmitted to the TFDS3000. On the other hand, whenever BR/D = 1, the TOIM3232 interprets RD_232 as the control word. The baud rate can be programmed to operate from 1200 bit/s to 115 kbit/s. As RS232 level converter, EIA232 or MAX232 or equivalent should be used. The external resistors and capacitors needed are shown in figure 1. Please also refer to figure 1 for the recommended power supply filter and pull-up resistors. The output pulse length can be programmed, see chapter “Operation Description”. It is strongly recommended to use 1.627 ms output pulses to save battery power. 4 (9) Preliminary Information TELEFUNKEN Semiconductors Rev. A4, 26-Mar-96 ÁÁÁÁ Á Á Á ÁÁ Á Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁ Á Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁ Á Á Á Á ÁÁÁÁÁÁ Á Á Á ÁÁÁÁ Á Á Á Á ÁÁ Á Á Á ÁÁ Á Á Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ Á Á Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁ Á Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁ Á Á Á ÁÁ Á Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ Á Á Á ÁÁÁÁ Á Á Á Á ÁÁ Á Á Á ÁÁ Á Á Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ **) Operation at VCC = 3 V is also specified. For data compare TEMIC Matra MHS ULC technology data sheet. Specified at VCC = 5 V ± 10% **), operating temperature 0 to 70°C Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á ÁÁ Á Á Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ Á Á Á Á Á Á ÁÁ Á Á Á Á ÁÁ Á Á Á ÁÁ Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á ÁÁ Á Á Á Á Á ÁÁ Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á ÁÁ Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ Á Á Á Á Á Á ÁÁ Á Á Á Á ÁÁ Á Á Á ÁÁ Á Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁ Á Á Á Á Á ÁÁÁÁÁÁÁÁÁ Á Á Á Á Á Á ÁÁ Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁ Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Absolute Maximum Ratings Output sinking current Junction temperature Ambient temperature (operating) Storage temperature Soldering temperature Parameter Supply voltage Input/ output voltage Symbol VCC Iout Tj Tamb Tstg Tsldr Min. – 0.5 – 0.5 – 25 0 8 Typ. 215 Max. 7 VCC + 0.5 85 230 125 70 TELEFUNKEN Semiconductors Rev. A4, 26-Mar-96 DC Characteristics Parameter Input HIGH voltage Input LOW voltage Schmitt trigger Positive threshold Negative threshold Input leakage No pull-up/ down Output HIGH voltage Output LOW voltage Current consumption Standby Dynamic IOH = –3.2 mA IOL = + 3.2 mA Inputs grounded, no output load, VCC = 5 V, T = 25 °C VIN = VDD or GND Preliminary Information Test Conditions Symbol VIH VIL VOH VOL VT+ VT– IL ISB IDD TOIM3000/3232 Unit V V mA °C °C °C °C Min. 2.2 2.4 1.1 t = 20 s @ 215°C All pins All pins Typ. "1 2 Notes Max. "5 0.4 1.4 0.8 1 Unit V V mA mA V V mA V V 5 (9) TOIM3000/3232 Operation Description Features only for TOIM3000 The TOIM3000 uses 2 clocks from the UART: the 1.8432 MHz clock and the Baud_out clock for its internal timing. Both are connected to XIN and B_CLK, respectively. The B_CLK is used as a reference for pulse stretching whereas XIN is used as a time base for pulse shortening to 1.627 ms and noise filtering. Single clock operation TOIM3000 can be operated with only a single clock. In this case, the B_CLK and XIN are tight together and connected to the Baudout pin of the UART. The pulse width is then shortened to 3/16 of the bit length and noise filtering is deactivated. S1 is to be connected to VCC and S0 to GND. We strongly recommend not to use this mode in battery-operated systems because the 3/16 pulse length at lower bit rates consumes more power than the shorter pulses. At a baud rate of 9600 bit/s, the ratio of power consumption of both modes is a factor of 12 (!). The TOIM3000 interfaces to an RS232 level converter through two pins, RD_232 and TD_232. These two pins provide the extra function that a single TOIM3000 IC can time share with both an infrared IrDA port and an RS232 port. Whenever RESET = 0, the TOIM3000 links to the infrared transceiver TFDS3000 through RD_IR and TD_IR pins. On the other hand, when RESET = 1, the TOIM3000 links to the RS232 port through RD_232 and TD_232 pins (see figure 1). Features only for TOIM3232 The baud rate at which an RS232 serial port communicates with the external adapter is programmable inside the TOIM3232. This programmable baud rate should be used when the baud clock and the UART oscillator clock are not available. When BR/D = 0, the TOIM3232 interprets the signals at RD_232 and RD_IR pins as data to be transmitted and received data. On the other hand, whenever BR/D = 1, 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 (“0”) (see figure 2). Control Byte (8 bit) 6 (9) Preliminary Information ÁÁ Á Á Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁ Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á ÁÁ ÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á ÁÁ ÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á ÁÁ ÁÁ ÁÁÁÁ Á Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á ÁÁ ÁÁ Á ÁÁ ÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á ÁÁ ÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á ÁÁ ÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á ÁÁ ÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á ÁÁ ÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á ÁÁ ÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á ÁÁ ÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á ÁÁ ÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á ÁÁ ÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á ÁÁ ÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á ÁÁ ÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á ÁÁ ÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ Á Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁ Á ÁÁ ÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á ÁÁ ÁÁ Á ÁÁ ÁÁ ÁÁ ÁÁ Á ÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á ÁÁ ÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á ÁÁ ÁÁ ÁÁ ÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á Á Á Á ÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á Á Á Á ÁÁ Á X S2 S1 S0 B3 B2 B1 B0 where X: Don’t care S1, S2: S0: User-programmable bit IrDA pulse select = (1) = (0) B0 .. B3: 1.627 ms output pulses 3/16 bit time pulses *) Baud rate selects, B0 = LSB *) not recommended Baud Rate Select Words Note: IrDA standard only supports 2.4, 9.6, 19.2, 57.6, and 115.2 kbit/s. B3 0 0 0 0 0 0 0 0 1 1 1 1 1 B2 0 0 0 0 1 1 1 1 0 0 0 0 1 B1 0 0 1 1 0 0 1 1 0 0 1 1 0 B0 0 1 0 1 0 1 0 1 0 1 0 1 0 Second Char. 0 1 2 3 4 5 6 7 8 9 A B C Baud Rate 115.2 k 57.6 k 38.4 k 19.2 k 14.4 k 12.8k 9.6k 7.2 k 4.8 k 3.6 k 2.4 k 1.8 k 1.2 k TELEFUNKEN Semiconductors Rev. A4, 26-Mar-96 TOIM3000/3232 Software for the TOIM3232 The control word is composed of two characters, written in hexadecimal, in format:YZ. UART Programming For proper operation, the RS232 must be programmed to send a START bit plus an 8 bit data word, YZ and no STOP bit for every word sent. The transfer rate for programming must be identical with the formerly programmed data rate, or after resetting the TOIM3232, the default rate of 9600 bit/s is used. Á ÁÁ Á Á Á Á Á Á ÁÁ Á Á Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁ Á Á Á Á ÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁ Á Á Á Á ÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁ Á Á Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁ Á Á Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁ Á Á Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁ Á Á Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁ Á Á Á Á Á ÁÁ Á Á Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁ Á Á Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁ Á Á Á Á Á ÁÁ Á Á Á Á ÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁ Á Á Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁ Á Á Á Á ÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁ Á Á Á Á Á Á ÁÁ Á Á Á Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁ Á Á Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á ÁÁ Á Á Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁ Á Á Á Á Á ÁÁ Á Á Á Á Á ÁÁ ÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁ Á Á Á Á Á Á ÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁ Á Á Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á Á Á Á ÁÁ Á Á Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á ÁÁÁÁ STEP RESET 1 HIGH 2 3 LOW LOW BR/D X RD_UART TD_UART RD_IR X X X X X X X X X X HIGH 4 LOW HIGH YZ with Y = 1 for 1.627 ms Y=0 for 3/16 bit length DATA X X 5 LOW LOW DATA DATA TD_IR COMMENTS X Resets all internal registers. Resets IrDA default baud rate of 9600 bit/s. X Wait at least 7 ms. X Wait at least 7 ms. The TOIM3232 now enters the control word (programming) mode. X Sending the control word YZ. Send ‘1Z’ if 1.627 ms pulses are used. Otherwise send ‘0Z’ if 3/16 bit pulses are used. ‘Y6’ keeps the 9.6 kbit/s data rate, whereas the ’0Z’ selects the 3/16 bit time pulses. Z = 0 sets to 115.2 kbit/s. Then wait at least 1 ms for hold-time. DATA Data communication between the TOIM3232 and the RS232 port has been established by BR/D LOW. The TOIM3232 now enters the data transmission mode. Both RESET and BR/D must be kept LOW (‘0’) during data mode. Software can reprogram a new data rate by re-starting from step 3. The UART also must be set to the correct data rate ***). ***) For programming the UART, refer to the National Semiconductor’s data sheet of PC 16550 UART. TELEFUNKEN Semiconductors Rev. A4, 26-Mar-96 7 (9) Software Algorithm Preliminary Information TOIM3000/3232 SO16L Package and Pin Assignment of TOIM3000 Dimensions in mm 10.5 10.1 9.25 8.75 2.45 2.25 0.25 0.10 1.27 8.89 2.70 2.45 0.3 0.2 7.5 7.3 10.56 10.15 0.49 0.35 technical drawings according to DIN specifications 1 95 11493 8 (9) Preliminary Information TELEFUNKEN Semiconductors Rev. A4, 26-Mar-96 TOIM3000/3232 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 systems with respect to their impact on the health and safety of our employees and the public, as well as their impact on the environment. It is particular concern to control or eliminate releases of those substances into the atmosphere which are known as ozone depleting substances ( ODSs). The Montreal Protocol ( 1987) and its London Amendments ( 1990) intend to severely restrict the use of ODSs and forbid their use within the next ten years. Various national and international initiatives are pressing for an earlier ban on these substances. TEMIC TELEFUNKEN microelectronic GmbH semiconductor division has been able to use its policy of continuous improvements to eliminate the use of ODSs listed in the following documents. 1. Annex A, B and list of transitional substances of the Montreal Protocol and the London Amendments respectively 2 . Class I and II ozone depleting substances in the Clean Air Act Amendments of 1990 by the Environmental Protection Agency ( EPA) in the USA 3. Council Decision 88/540/EEC and 91/690/EEC Annex A, B and C ( transitional substances ) respectively. TEMIC can certify that our semiconductors are not manufactured with ozone depleting substances and do not contain such substances. We reserve the right to make changes to improve technical design and may do so without further notice. Parameters can vary in different applications. All operating parameters must be validated for each customer application by the customer. Should the buyer use TEMIC products for any unintended or unauthorized application, the buyer shall indemnify TEMIC against all claims, costs, damages, and expenses, arising out of, directly or indirectly, any claim of personal damage, injury or death associated with such unintended or unauthorized use. TEMIC TELEFUNKEN microelectronic GmbH, P.O.B. 3535, D-74025 Heilbronn, Germany Telephone: 49 ( 0 ) 7131 67 2831, Fax number: 49 ( 0 ) 7131 67 2423 TELEFUNKEN Semiconductors Rev. A4, 26-Mar-96 9 (9) Preliminary Information