UM0213 - User Manual
Starting the Demo Application
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2.5
RC and HOTKEYS CONFIG Tab
2.5.1
Selecting the Remote Control Protocol
The STFPC311 supports three Remote Control (RC) protocols, RC5, RC6, and NEC (see
Appendix A: Remote Control Protocols on page 14
for RC protocol details). Select the
appropriate protocol using radio buttons in “REMOTE CONTROL PROTOCOL” frame on the
RC AND HOTKEYS CONFIG tab (see
).
The RC5 and RC6 protocols use Bi-phase modulation Manchester encoding, in which logic
transitions represent a logic high or logic low signal (see
for details).
The NEC protocol uses pulse distance bit encoding. A logic '1' takes 2.25ms to transmit,
while a logic '0' takes only 1.12ms. A message is started by a 9ms Auto Gain Control (AGC)
burst, which is followed by a 4.5ms space, which is then followed by the Address and
Command.
The Address and Command are transmitted twice. The second time, all of the bits are
inverted and can be used for verification of the received message.
2.5.2
Device Address Setting
The STFPC311 needs to be configured with the address of the Remote Control with which it
is intended to be interfaced. Specify the address of the Remote Control in the text box in the
“RC ADDRESS” frame on RC AND HOTKEYS CONFIG tab (see
). For example,
the address for the RC5 protocol is 0x00 (see
2.5.3
RC Hot Key Configuration
The STFPC311 GUI supports 24 Front Panel keys, 8 of which may be programmed as RC
hot keys using check boxes in the “RC HOTKEYS CONFIGURATION” frame on RC AND
HOTKEYS CONFIG tab in
(see
). For example, the RC hot
key configuration for STANDBY for the RC5 protocol is 0x0C (see
).
1.
Different remotes using the same protocol may have different device addresses.
Table 1.
RC Protocol Address and STANDBY RC Hot Key
Protocol
Address
(1)
RC Hotkey Configuration for
STANDBY
RC5
0x00
0x0C
RC6
0x27
0x0C
NEC
0x02
0x88
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