GP2W0110YPS Datasheet, PDF (7/14 Pages) Sharp Electrionic Components – Low Power Infrared Transceiver

Low Power Infrared Transceiver
Shutdown Mode
The Shutdown pin is an active HIGH terminal, and
performs the Power Save function according to Table 3
and Figure 9.
Signal Waveform Example
Figure 10 and Figure 11 show the waveform at each
point in the GP2W0110YPS/GP2W0114YPS block dia-
gram as the device is being operated to IrDA stan-
dards. The waveform example is only applicable as a
design and evaluation reference to understand the
GP2W0110YPS/GP2W0114YPS hardware implemen-
tation and system measurements.
Table 3. Effect of Shutdown Pin
INPUT
HIGH
LOW
OPEN
MODE
Shutdown
Normal Operation
Normal Operation
SD SHUTDOWN
ENABLED
V_IH
V_IL
(or OPEN)
HIGH
RxD
OPERABLE
LOW
0.3 ms
GP2W0110YPS-8
Figure 9. Shutdown Circuit Operation
GP2W0110YPS/GP2W0114YPS
t
t
1
0
1
0
1
3t/16
2
3
4
5
0
1
0
1
NOTES:
1 Transmitting data waveform
2 Encoder circuit output waveform
3 Transmitter output optical signal waveform
4 GP2W0110YPS/GP2W0114YPS receiver output waveform
5 Receiving data waveform
t=
1
Data Rate
Data rate: 2.4 kbit/s, 9.6 kbit/s, 19.2 kbit/s, 38.4 kbit/s,
57.6 kbit/s, 115.2 kbit/s
GP2W0110YPS-10
Figure 11. GP2W0110YPS/GP2W0114YPS
Signal and IrDA Waveforms
3
2
ENCODER
1
CIRCUIT
4
DECODER
5
CIRCUIT
GP2W0110YPS-9
Figure 10. GP2W0110YPS/GP2W0114YPS
Block Diagram
IrDA Technical Information
7