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RPM971-H14E3A
P1-P3
P4-P6
P7-P9
RPM971-H14
Photo Link Module
4/8
z
Timing chart
1. Mode Setting (SIR / MIR / FIR)
With RPM97
1-H14 ther
e is a need
for mode s
witch accordi
ng to commun
ication rate. F
or the m
ode setting, th
ere
are “PWDOWN/M
ode” and “TXD”. P
lease see
below diagra
m for the set up of mo
de.
(a) FIR Mode
ts 200ns
=
>
ts 200ns
=
>
tdmax=200
µ
s
FIR Mode
(4Mbps)
P
WDOWN
/
Mode
TXD
Mode
(b) SIR / MIR Mode
ts 200ns
=
>
ts 200ns
=
>
tdmax=200
µ
s
SIR / MIR Mode
(9.6k-1.152Mbp
s)
PWDOWN
/
Mode
TXD
Mode
Fig.
1
2. T
iming chart (use exam
ple)
(a) Emitting
When a pulse is inputt
ed to TXD terminal, LED is em
itting, and
a signal is tran
smitted.
Bu
t, when “H” condi
tion follows
TXD terminal
, LED turns of
f the light
s in the range of
TLEDmax.
TXD
more than TLEDmax
TLEDmax
less than TLEDmax
PWDOWN
L
ED emitting
RPM971-H14
Photo Link Module
5/8
(b) Detecting
When it
is received an optical
signal, a signal o
utputs from RXD te
rminal at the following ti
ming.
It is outputted in t
he pulse
width fixed at the time of SI
R mode (9.6k to 1
15.2kbps).
It is outputted in t
he pulse
width which is the same as th
e input signal at the tim
e of MIR mode (0.5
76M, 1.152Mbps)
and FIR mode (4Mbps).
But, as for the pulse
width of the input si
gnal, it is based
on IrDA
Physical
Layer Specification.
Light input
1 SIR mode (output example)
less than 2.3
µ
s
more than 2.3
µ
s
approximately 2.3
µ
s
300k
Ω
pull up
PWDOWN
RXD
Light input
2 MIR mode (output example)
434ns
217ns
434ns
217ns
300k
Ω
pull up
PWDOWN
RXD
Light input
3 FIR mode (output example)
125ns
250ns
125ns
250ns
300k
Ω
pull up
PWDOWN
RXD
RPM971-H14
Photo Link Module
6/8
z
External dimensions
(Unit : mm)
2.COPLANARITY : 0.1mmMAX
1.TOLERANCE : ±0.2mm
UNIT : mm
NOTE
ETH396
PinPD
LED
8
1
2.67
R1.0
R1.1
2.9
0.95
P0.95
×
7
=
6.65
2.59
0.37±0.1
4.0
1.4
1.1
2.2
0.78
0.15±0.1
0.76
0.15±0.1
1.0
8.0
2.8
2.2
P1-P3
P4-P6
P7-P9
RPM971-H14E3A
Mfr. #:
Buy RPM971-H14E3A
Manufacturer:
ROHM Semiconductor
Description:
Infrared Transceivers IRDA IR COMM SIDE VIEW W/SHIELD
Lifecycle:
New from this manufacturer.
Delivery:
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