HSDL-7001 Lite-On Electronics, HSDL-7001 Datasheet - Page 2

• Manufacturer Part Number: HSDL-7001
• Description: IC ENCODER/DECODER IRDA 16-SOIC
• Manufacturer: Lite-On Electronics
• Type: Infrared Encoder/Decoderr

Specifications of HSDL-7001

• 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: 16-SOIC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 516-1276-2

2
I/O Pinout List
Pin
Note: There are two methods of putting the internal oscillator cell in POWERDOWN MODE. Whenever the CLKSEL Pin is asserted high (External clock
selected) the oscillator cell is automatically put in powerdown mode, or whenever the POWERDN Pin is asserted high.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
16XCLK
(SIXTNCK)
/TXD
RCV
A0
A1
A2
CLK_SEL
GND
/NRST
/IR_RCV
IR_TXD
PULSEMOD
POWERDN
OSCOUT
OSCIN
V
CC
Name
DIGIN
DIGIN
DIGOUT
DIGIN
DIGIN
DIGIN
DIGIN
DIGIN
DIGIN
DIGOUT
DIGIN
(with
pulldown)
DIGIN
(with
pulldown)
ANAOUT
ANAIN
Type
Oscillator Input
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. The 16XCLK may be provided by
application circuitry if BAUDOUT is not available. This signal is required when the
internal clock is not used.
Negative edge triggered input signal that is normally tied to the SOUT
signal of the UART (serial data to be transmitted). Data is modulated
and output as IR_TXD.
Output signal normally tied to SIN signal of a UART (received serial
data). RCV is the demodulated output of IR_RVC.
Clock Multiplex Signal
Clock Multiplex Signal
Clock Multiplex Signal
Used to activate either the Internal or External Clock. A high on this line
activates the External clock (16XCLK) and a low activates the Internal clock.
When the External clock is activated, the internal oscillator is put in
POWERDOWN MODE.
Chip Ground
Active low signal used to reset the IrDA-SIR ENCODE & DECODE state machine.
This signal can be tied to POR (Power On Reset) or V
Input from SIR optoelectronics. Input signal is a 3/16th or 1.6 s pulse which
is demodulated to generate RCV output signal.
This is the modulated TXD signal.
A high level on this input puts the chip into the monoshot transmit mode. In
this mode, when there is a negative transition on the TXD input, a rising edge on
the internal transmit modulation state machine will activate a high pulse on
IR_TXD for 6 crystal clock cycles. With a 3.6864 MHz crystal, this corresponds to
1.63 s. This mode cannot be used in conjunction with the 16XCLK clock. It is
meant to be used with the external crystal clock. By default, this input pin is
pulled to GND.
A high on this input puts only the internal oscillator cell (OSCII) in
POWERDOWN MODE. The cell is normally not powered down.
Oscillator Output
Power
Function
CC
.