数据搜索系统,热门电子元器件搜索
  Chinese▼

Delete All
ON OFF
ALLDATASHEETCN.COM

X  

预览 PDF Download HTML

TOIM4232 Datasheet(数据表) 2 Page - Vishay Siliconix

部件型号  TOIM4232
说明  SIR Endec for IrDA Applications Integrated Interface Circuit
下载  14 Pages
Scroll/Zoom Zoom In 100% Zoom Out
制造商  VISHAY [Vishay Siliconix]
网页  http://www.vishay.com
标志 VISHAY - Vishay Siliconix

TOIM4232 Datasheet(HTML) 2 Page - Vishay Siliconix

  TOIM4232 数据表 HTML 1Page - Vishay Siliconix TOIM4232 数据表 HTML 2Page - Vishay Siliconix TOIM4232 数据表 HTML 3Page - Vishay Siliconix TOIM4232 数据表 HTML 4Page - Vishay Siliconix TOIM4232 数据表 HTML 5Page - Vishay Siliconix TOIM4232 数据表 HTML 6Page - Vishay Siliconix TOIM4232 数据表 HTML 7Page - Vishay Siliconix TOIM4232 数据表 HTML 8Page - Vishay Siliconix TOIM4232 数据表 HTML 9Page - Vishay Siliconix Next Button
Zoom Inzoom in Zoom Outzoom out
 2 page
background image
www.vishay.com
2
Document Number 82546
Rev. 1.5, 06-Jun-06
TOIM4232
Vishay Semiconductors
Pin Assignment and Description
*) Crystal should be connected as shown in figure 2. In addition connect a 100 k
Ω resistor from Pin 6 to Pin 7 and from Pin 6 and Pin 7 a
22 pF capacitor to ground, respectively. When an external clock is available connect it to Pin 6 leaving Pin 7 open. The external resistor
of 100 k
Ω is used to accelerate the start of oscillation after reset or power - on. The value depends on the "Q" of the resonator. With low
Q resonators it is not necessary. The start - up time of the oscillator is between 30 µs (with piezo resonators) and above 2 ms with high Q
quartzes.
**) All Vishay Semiconductor SIR transceivers fulfill this condition
Pin Number
Symbol
Description
I/O
Active
1
RESET
Resets all internal registers. Initially must be HIGH ("1") to reset internal
registers. When HIGH, the TOIM4232 sets the IrDA default bit rate of 9600
bit/s, sets pulse width to 1.627 µs. The VCC_SD output is simply an inverted
reset signal which allows to shut down of a TFDx4x00 transceiver when
applying the reset signal to the TOIM4232. When using devices with
external SD like TFDS4203, the reset line can be used directly as shut
down signal. RESET pin can be controlled by either the RTS or DTR line
through RS232 level converter. Minimum hold time for resetting is 1 µs.
Disables the oscillator when active.
HIGH
2BR/ D
Baud Rate control/ Data.
BR/ D = 0, data communication mode:
RS232 TXD data line is connected (via a level shifter) to TD_232 input pin.
The TXD - signal is appropriately shortened and applied to the output
TD_IR, driving the TXD input of the IR transceiver. The RXD line of the
transceiver is connected to the RD_IR input. This signal is stretched to the
correct bit length according the programmed bit rate and is routed to the
RS232 RXD line at the RD_232 pin.
BR/ D = 1, Programming mode:
Data received from the RS232 port is interpreted as Control Word. The
Control Word programs the baud rate width will be effective as soon as BR/
D return to LOW.
3
RD_232
Received signal data output of stretched signal to the RS232 RXD line
(using level converter).
OHIGH
4
TD_232
Input of the signal to be transmitted from the RS232 port TXD line (passing
the level converter).
IHIGH
5VCC_SD
Outputs an inverted RESET signal. Can be used to shut down the power
supply of a 4000 series transceiver (e.g., TFDU4100). VCC shutdown
output function. This pin can be used to shut down a transceiver (e.g.,
TFDx4xxx). Output polarity: Inverted RESET input.
OLOW
6
X1
Crystal input clock, 3.6864 MHz nominal. Input for external clock *)
I
7X2
Crystal *)
I
8
GND
Ground in common with the RS232 port and IrDA transceiver ground
9
TD_LED
Transmit LED indicator driver. Use 180
Ω current limiting resistor in.series
to LED to connect to VCC. (VCC = 3.3 V)
OLOW
10
RD_LED
Receive LED indicator driver. Use 180
Ω current limiting resistor in series
to LED to connect to VCC. (VCC = 3.3 V)
OLOW
11
NC
No connection
12
S1
User Programmable Bit. Can be used to turn ON/ OFF a front-end infrared
transceiver (e.g., an infrared module at the adapter front)
OLOW
13
S2
User Programmable Bit. Can be used to turn ON/ OFF a front-end infrared
transceiver (e.g., an infrared module at the adapter back)
OLOW
14
TD_IR
Data output of shortened signal to the infrared transceiver
O
HIGH
15
RD_IR
Data input from the infrared transceiver, min. pulse duration 1.63 µs **)
I
LOW
16
VCC
Supply voltage
I




HTML 页

1  2  3  4  5  6  7  8  9  10  11  12  13  14 


数据表 下载

Go To PDF Page


链接网址


Privacy Policy
ALLDATASHEETCN.COM
ALLDATASHEET是否为您带来帮助?  [ DONATE ]  

关于 Alldatasheet    |   广告服务   |   联系我们   |   隐私政策   |   书签   |   链接交换   |   制造商名单
All Rights Reserved© Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  , Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp  |   Russian : Alldatasheetru.com
Korean : Alldatasheet.co.kr   |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com  |   Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl