IRM7001 Datasheet, PDF (1/11 Pages) Vishay Siliconix – SIR Modulator/Demodulator

IRM7001
SIR Modulator/Demodulator
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 mod-
ulation 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.
Dimensions in inches (mm)
A.393 _(10.0)
.386 (9.8)
SOIC Package
16
9
B
.157 (4.0) .244 (6.2)
1
8 ^{.150 (3.8) .229 (5.8)}
.050 (1.27) BSC _{.068 (1.75)}
.054 (1.35)
R x 45°
.009 (.25)
.008 (.19)
T
.019 (.49)
.014 (.35)
.009 (.25)
.004 (0.1)
.049 (1.25)
7° _{.016 (.40)}
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
1
16
TXD
2
15
RCV
3
14
A0
4
13
A1
5
12
A2
6
11
CLK_SEL ⁷
10
GND
8
9
V_CC
OSCIN
OSCOUT
PWR DN
PLS MOD
IR_TXD
IR_RCV
NRST
Figure 2. IRM7001 Block Diagram
TXD
/NRST
RCV
A0
A1
A2
16XCLK
PULSEMOD
CLK_SEL
SIR
ENCODE
IR_TXD
SIR
DECODE
IR_RCV
INT_CLOCK
CLOCK
DIVIDE
Document Number: 82576
Revision 17-August-01
www.vishay.com
1