HSDL-7000 Lite-On Electronics, HSDL-7000 Datasheet

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HSDL-7000

Manufacturer Part Number
HSDL-7000
Description
ENCODER/DECODER 3/16 8-SOIC
Manufacturer
Lite-On Electronics
Type
Infrared Encoder/Decoderr
Datasheet

Specifications of HSDL-7000

Applications
Fax, Modems, Pagers
Voltage - Supply, Analog
2.7 V ~ 5.5 V
Voltage - Supply, Digital
2.7 V ~ 5.5 V
Mounting Type
Surface Mount
Package / Case
8-SOIC (5.3mm Width), 8-SOP, 8-SOEIAJ
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

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Manufacturer
Quantity
Price
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HSDL-7000
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AGILENT
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HSDL-7000
IR 3/16 Encode/Decode IC
Data Sheet
Description
The HSDL-7000 performs the modulation/
demodulation function used to both encode and
decode the electrical pulses from the IR transceiver.
These pulses are then sent to a standard UART which
has a BAUDOUT signal available externally. This
signal is 16 times the selected baud rate.
applications where the 16XCLK is not available, an
external means of generating the 16XCLK must be
designed.
The HSDL-7000 is comprised of two state machines –
the serial IR encode and the serial IR decode blocks.
Each of these blocks derives their timing from the
16XCLK input signal from the UART. The Encode
block is driven by the negative edge triggered TXD
signal from the UART. This initiates the modula-
tion state machine resulting in the 3/16 modulated
IR_TXD signal which drives the IR transceiver module.
The IR Decode block is driven by the negative edge
triggered IR_RCV signal from the infrared transceiver
module. After this signal is demodulated and
stretched, it drives the RCV signal to the UART.
Schematic
TXD
RCV
NRST
IR ENCODE
IR DECODE
HSDL-7000
IR_TXD
IR_RCV
16XCLK
TXD
RCV
GND
Pin Out
In
1
2
3
4
YYWW
7000
Features
• Compliant with IrDA physical layer specs
• Interfaces with IrDA compliant SIR (115Kbps)
• 1 Micron CMOS gate array
• Used in conjunction with standard 16550 UART
Applications
Interfaces with SIR infrared transceivers to perform:
• Serial half-duplex data transfer between:
• Telecom applications in:
• Industrial applications in:
• Medical applications in:
transceiver
Notebook computers
Subnotebooks
Desktops PCs
PDAs
Printers
Other peripheral devices
Modems
Fax machines
Pagers
Phones
Data collection devices
Patient and pharmaceutical data collection
8
7
6
5
IR_RCV
IR_TXD
NRST
V
CC

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HSDL-7000 Summary of contents

Page 1

... The HSDL-7000 is comprised of two state machines – the serial IR encode and the serial IR decode blocks. Each of these blocks derives their timing from the 16XCLK input signal from the UART. The Encode block is driven by the negative edge triggered TXD signal from the UART ...

Page 2

Pin Description 16XCLK - Positive edge triggered input clock that is set to 16 times the data transmission baud rate. The encode and decode schemes require this signal. The signal is usually tied to a UART’s BAUDOUT signal. TXD - ...

Page 3

Encoding Scheme 16 CLOCK CYCLES 16 X CLOCK TXD 7 cs IRTXD 3 cs The encoder sends a pulse for every space or “0” that is sent on the TXD line high to low transition of the TXD ...

Page 4

Absolute Maximum Ratings Parameter Storage Temperature Operating Temperature Output Current Power Dissipation Input/Output Voltage Power Supply Voltage Switching Specifications ( Volts 10 - Parameter Symbol Toggle Frequency Propagation Delay Time Output ...

Page 5

... The Minimum Pulse Width represents the minimum pulse width of the encoded IR_TXD pulse (and the IR_RCV pulse). As per the IrDA specifications, the minimum pulse width of the IR_TXD and IR_RCV pulses should (1/1.8432 MHz) or 1.63 s. The minimum pulse width specified for the HSDL-7000 is 250 ns, which is within IrDA specification. Under normal circumstances, the pulse width should not be less than 1.63 s. ...

Page 6

For company and product information, please go to our web site: http://optodatabook.liteon.com/databook/databook.aspx Data subject to change. Copyright © 2007 Lite-On Technology Corporation. All rights reserved. WWW.liteon.com or ...

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