CHAPTER 3 INTERFACE
B-EP
Series
3-2
3.2 IrDA INTERFACE (TEC Protocol)
In IrDA standard, only IrDA-SIR of the physical layer should be used. For the data link layer, original
simplified protocol should be provided.
3.2.1
SPECIFICATIONS FOR PHYSICAL LAYER AND TRANSMISSION CONTROL METHOD
:
parts are required.
(1) Specifications
Item Specifications
Normal
mode
Physical layer
Conforming to IrDA-SIR V1.2 (Low Power)
standard
Transfer rate
9600, 19200, 38400, 57600, 115200 bps
*1
Communication distance within 0.2 m
*2
Peak wave length of
emitted light
850 to 900 nm
Communicable angle
within ±15°
Ambient illuminance
1000 lx or less
(fluorescent lamp and incandescent lamp)
Emissive power
Min 3.6 mW/Sr
(
θ
h,
θ
v
≤
±15°)
Min. photo sensibility
Min 9 µW/cm
2
(
θ
h,
θ
v
≤
±15°)
*1: Values for the normal mode are dependent on the communication protocol settings.
*2: The communication distance may become shorter than 0.2 m, depending on the host’s
performance.
Transport layer
IrLMP
IrLAP
IrDA-SIR
IrDA V1.2 (Low Power) standard
Simplified protocol
IrDA-SIR
B-EP
