STLED325 datasheet(52/62 Pages) STMICROELECTRONICS

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Commands

STLED325

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Doc ID 17576 Rev 1

0: Display off (keyscan continues)

1: Display on

When b5 = 1, the decoding is based on bits b1-b0 as illustrated below:

b1 b0 = 01: IR hot-key configuration of ADR and DATA. After this 3 bytes are sent which are

in the form ADR+DATA to configure the hot-key for a particular device address. A maximum

of 8 hot keys can be configured from a single device address or 4 hot-keys from two device

addresses and so on. If more than 24 bytes in the form of ADR+DATA are sent, then the

pointer moves back to the first ADR+DATA location.

b1 b0 = 10: FP hot-key configuration. Any of the 16 keys can be configured as hot-keys. 2

bytes of key data command are sent following this command to configure the front-panel

hotkeys.

b4, b3 b2: Reserved

b1b0: 00 or 11 are treated as invalid commands and subsequent data bytes are ignored.

Remote control hot keys when b5 = 1

b1 b0: 01

Following 8-bit is sent to indicate the address for RC and subsequent 16-bit indicates the RC

hot key value itself. So a total of 3 bytes are sent for one hot-key configuration. A total of 24

bytes are re-served for RC hot key configuration. Note that the customer code is

programmable for the RC hotkey for both RCMM and R-STEP RC protocol.

Front Panel Hot Keys when b5 = 1

b1 b0: 10

Front panel hot keys can be configured by sending 2 bytes of key data to configure any key

as hot-key from any of the 2 banks. Any number of keys can be configured as hot-keys.

When input key code matches any one of the predefined key codes stored in the internal

RAM, the STLED325 de-asserts the STBY output.

STLED325 Datasheet(PDF) 52 Page - STMicroelectronics