stled325 STMicroelectronics, stled325 Datasheet - Page 52

• Manufacturer Part Number: stled325
• Description: I?c Interfaced, Advanced Led Controller/driver With Keyscan, Standby Power Management And Real Time Clock Rtc
• Manufacturer: STMicroelectronics

Commands
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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.
Doc ID 17576 Rev 1
STLED325