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 (θh, θv ≤ ±15°)
Min. photo sensibility Min 9 µW/cm
2
(θh, θv ≤ ±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
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