SIR Modulator/Demodulator - Vishay Siliconix
Description
IRM7001
SIR Modulator/Demodulator
Dimensions in inches (mm)
A .
393 (10.
0) .
386 (9.
8) 16 1 9 B .
157 (4.
0) .
244 (6.
2) 8 .
150 (3.
8) .
229 (5.
8)
SOIC Package
.
050 (1.
27) BSC .
068 (1.
75) .
054 (1.
35) T .
019 (.
49) .
014 (.
35) .
009 (.
25) .
004 (0.
1)
R x 45° .
009 (.
25) .
008 (.
19) .
049 (1.
25) 7 ° .
016 (.
40)
FEATURES • Compliant with IrDA 1.
0 Physical Layer Specifications • Interfaces with IrDA 1.
0 Compliant IR Transceivers • Used in conjunction with Standard 16550 UART • Transmits/Receives either 1.
6µs or 3/16 Pulse Mode • Internal or External Clock Mode • Programmable Baud Rate • 2.
7–5.
5 V Operation • 16 Pin SOIC Package APPLICATIONS • Interfaces with IR Transceivers in: - Computer Applications: PDAs Dongle or other RS232 Adapter - Telecom Application: Modems Fax Machines Pagers - Handheld Data Collection: Industrial Medical Transportation DESCRIPTION The IRM7001 SIR-Encoder/Decoder is a CMOS modulator/ demodulator chip that is used to both encode and decode information as per the IrDA® SIR (Serial InfraRed) signal modulation and demodulation scheme.
This chip is designed to work with Infineon IrDA compatible transceivers and all other IrDA compatible transceivers.
The chip contains a clock divider circuit used to generate the 16X clock internally.
This makes it very suitable for microcontroller-based embedded system design.
Notes: 1.
Dimensions A and B are datums and T is a datum surface.
2.
Dimensioning and tolerancing per ansi Y14.
5M, 1982 3.
Controlling dimension: millimeter.
4.
Dimension A and B do not include mold protrusion.
5.
Maximum mold protrusion 0.
15 (0.
005) per side.
Figure 1.
IRM7001 pin out
IRM - 7001
16XCLK TXD RCV A0 A1 A2 CLK_SEL GND 1 2 3 4 5 6 7 8 16 15 14 13 12 1 11 10 9 VCC OSCIN OSCOUT PWR DN PLS MOD IR_TXD IR_RCV NRST
Figure 2.
IRM7001 Block Diagram
TXD
SIR ENCODE
IR_TXD
/NRST RCV SIR DECODE IR_RCV
INT_CLOCK A0 A1 A2 16XCLK PULSEMOD CLK_SEL
CLOCK DIVIDE
Document Number: 82576 Revision 17-August-01
www.
vishay.
com
1
Figure 3.
IRM7001 Usage ...
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