CMOSTEK CMT2 5 Series, Руководство пользователя

Страница: 10 / 34

AN113
Rev 1.0 | Page 10/34
www.hoperf.com
Table 6. Mapping from K1-K5 to LED1-LED4 in Matrix Button Mode
Push Buttons on CMT2150A-EM
[1]
LED CMT2250A-EM
[2]
K1 K2 K3 K4 K5 LED1 LED2 LED3 LED4
1 0 0 0 0 Pulse 0 0 0
0 1 0 0 0 0
Pulse
0 0
0 0 1 0 0 Pulse
Pulse
0 0
0 0 0 1 0 0 0 Pulse 0
0 0 0 0 1 Pulse 0
Pulse
0
1 1 0 0 0 0 Pulse Pulse 0
1 0 1 0 0 Pulse Pulse Pulse 0
1 0 0 1 0 0 0 0
Pulse
1 0 0 0 1 Pulse 0 0 Pulse
0 1 1 0 0 0 Pulse 0 Pulse
0 1 0 1 0 Pulse
Pulse
0
Pulse
0 1 0 0 1 0 0 Pulse Pulse
0 0 1 1 0 Pulse 0
Pulse Pulse
0 0 1 0 1 0
Pulse Pulse Pulse
0 0 0 1 1 Pulse Pulse Pulse Pulse
Note:
[1]. In the push buttons part, “1” represents press action while “0” represents un-pressed, the largest
number of buttons can be pressed at the same time is 2.
[2]. In the LED part, “Pulse” represents that the LED is turned on for 2 seconds and then turned back
to off, while “0” represents that the LED remains the off status.
A few key parameters settings in this application scheme are:

Frequency = 433.92 MHz

Symbol Rate = 9.6 ksps

Encoder = 1920

Push Button Setting = Matrix, 5 buttons

Pulse Time = 2 seconds

Study Function = Off
Notes:
1. Please refer to the “AN112 CMT2150A Configuration Guideline” for the introduction of Matrix mode of the push button
setting and the 1920 encoding format.
2.3 Periodic Tx
In the Periodic Tx scheme, the CMT2150A-EM will send out packets to the CMT2250A-EM automatically in every 3 seconds.
The LED1-3 on the CMT2250A-EM will be turned on for 500 ms on each transmission. The push buttons are shown and
described in the figure/table below: