STFPC311(2012) View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

STFPC311
(Rev.:2012)

Front panel controller/driver with standby power management

STMicroelectronics 

STFPC311

7

Programmable hotkeys

Programmable hotkeys

7.1

IR Remote control

Eight (8) commands are user programmable for hot key functions.

The address of the appliance (8-bit) is stored first into the internal RAM. Then, the command

for the hot keys are programmed into the internal RAM. Each hot key memory address could

accommodate one byte (8-bits). Usually one byte is reserved for one command. The RC

data is only cleared when the READY is pulled low (system goes into STANDBY state).

7.2

Front panel keys

t(s) Eight out of 24 keys are user programmable for hot key functions. Only keys from KS1 to

c KS4 can be programmed.

du Figure 20. Programmable hot keys (only KS1 to KS4, Box FPK1)

uct(s) - Obsolete Pro 8 hot keys are to be placed in each address location as indicated by the hotkey setting

d command.

Pro Figure 21. HOTKEY setting command address locations (8 hot keys)

ObsoleteFor example, to store (Seg2/Key2) at the first location of the hot key RAM, the following

commands are sent:

● 10110000 (command+address), and

● 00010000 (hot key mask).

To store (Seg2/Key1), (Seg2/Key2), and (Seg4/Key1), the following commands are sent:

● 10110000 (command+address), and

● 00110010 (hot key mask).

The same commands apply to FPK2 and FPK3 programming.

Note:

Reading the hot key values immediately upon STBY de-assertion is recommended. If they

are not read within the watchdog preset timer value, the hot key data is cleared.

Doc ID 12324 Rev 2

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