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| 型號： | TFDU8108 |
| 廠商： | Vishay Intertechnology,Inc. |
| 英文描述： | Very Fast IrDA in Standard package |
| 中文描述： | 非常快速的IrDA標準包裝 |
| 文件頁數(shù)： | 17/27頁 |
| 文件大?。?/td> | 820K |
| 代理商： | TFDU8108 |
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TFDU8108
Vishay Semiconductors
Document Number 82558
Rev. 1.6, 12-Aug-04
www.vishay.com
17
Appendix B
Application Guideline
In the following some guideline is given for handling
the TFDU8108 in an application ambient, especially
for testing. It is also a guideline for interfacing with a
controller. We recommend to use for first evaluation
the Vishay IRM1802 controller. For more information
see the special data sheet. Driver software is avail-
able on request. Contact irdc@vishay.com.
Serial Interface Capability of the Vishay
IrDA Transceivers
Abstract
A serial interface allows an infrared controller to com-
municate with one or more infrared transceivers. The
basic specification of IrDA) specified interface is
described in "Serial Interface for Transceiver Control,
v 1.0a", IrDA.
This part of the document describes the capabilities of
the serial interface implemented in the Vishay IrDA
transceivers TFDU8108 and TFDU6108. The VFIR
(16 Mbit/s) and FIR (4 Mbit/s) programmable versions
are using the same interface specification. (with spe-
cific identification and programming).
IrDA Serial Interface Basics
The
s
erial
i
nterface for
t
ransceiver
c
ontrol (SITC) is a
master/slave synchronous serial bus which uses the
Txd and Rxd as data lines and the SCLK as clock line
with a minimum period of 250 ns. The transceiver
works always as slave and jump into SITC mode on
the first rising edge of the clock line remaining there
until the command phase is finished. After power on it
is required an initial phase for
≥
30 clock cycles at Txd
is continuous low before the transmitter can be pro-
grammed. If Txd assume high during the initial phase
then must start the initial phase again.
The data transfer is organized by one byte preceded
by one start bit. The SITC allows the communication
between infrared controller and transceiver through
write and read transaction. The SITC consists of two
store blocks with different functions. The store block
called Extended Indexed Registers contain the vari-
ous supported functionality of the device and can be
read only. The other Main Control Registers allow
write and read transaction and store the executable
configuration of the device.
Any configuration is executed after the command
phase is completed.
Power-on
After power on the transceiver is to stay by definition in the default mode shown in the table.
Function
Power Mode
RX
TX_LED:
APEN
Infrared Mode
Transmitter Power
Addressing
The transceiver is addressable with three address bits. There are individual and common addresses with the following values.
Description
Individual address
Mask programmable
Common (broadcast) address
Data Acknowledgement
Data acknowledgement generated by the slave is
available if the APEN bit is set to 1 in the common
control register. In IrDA default state this functionality
is disabled. In default state of the TFDU8108 it is
enabled (see above). It is strongly recommended that
this functionality is enabled to be on the safe side for
correct data transmission during SITC mode.
TFDU8108
sleep
disable (Z)
disable
disable
SIR
max. SIR power level
Address value A [2:0]
010
111
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| TFDU8108-TR3 | 功能描述:紅外收發(fā)器 16 Meg Ir Data Trnsc RoHS:否 制造商:Vishay Semiconductors 波長:900 nm 連續(xù)數(shù)據(jù)傳輸:115.2 Kbit/s 傳輸距離:1 m 輻射強度:60 mW/sr 半強度角度:44 deg 脈沖寬度:2 us 最大上升時間:100 ns 最大下降時間:100 ns LED 電源電壓:- 0.5 V to 6 V 最大正向電流:80 mA 工作電壓:2.4 V to 5.5 V 最大工作溫度:+ 85 C 最小工作溫度:- 25 C 尺寸:6 mm x 3.1 mm x 1.9 mm 封裝 / 箱體: 封裝:Reel |
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