STFPC320 STMicroelectronics, STFPC320 Datasheet - Page 35

• Manufacturer Part Number: STFPC320
• Description: Front Panel Controller/driver With Standby Power Management And Real-time Clock
• Manufacturer: STMicroelectronics

STFPC320
7.3
Description:
Note:
Display control and hotkey setting command
XXX on the bit values means don’t care. The bits can be set to ‘0’.
When b5 = 0
b2..b0 : Sets dimming quantity.
000 : Sets pulse width to 1/16.
001 : Sets pulse width to 2/16.
010 : Sets pulse width to 4/16.
011 : Sets pulse width to 10/16.
100 : Sets pulse width to 11/16.
101 : Sets pulse width to 12/16.
110 : Sets pulse width to 13/16.
111 : Sets pulse width to 14/16.
b3 : Turns on/off display
0 : Display off (key scan
continues)
1 : Display on
Bits b7-b6 = 10 is decoded as a display control and hotkey setting command. The
subsequent bits are decoded as follows:
b5 = 0 : Sets display control for Dimming Setting as shown in the table on the next
page.
When b5 = 1, the decoding is based on bits b2-b0 as illustrated below:
b2 b1 b0 = XX1 : RC hotkeys and Address configuration.
b2 b1 b0 = X1X : Front Panel hotkeys configuration.
b2 b1 b0 = 1XX : Sets the RTC segments location. Refer to the table on the next page
for the configuration.
b4, b3 : Reserved (the bits can be set to ‘0’)
MSB
1
0
RTC Segments Configuration
When b5 = 1
b2 b1 b0 : 1XX
This command is followed by
sending 7 bytes of configuration
data for RTC segments (byte1-
6) and format configuration
(byte7).
Read 12.3.1 for details.
b5
b4
b3
b2
Remote Control Hot Keys
When b5 = 1
b2 b1 b0 : XX1
Following this command is
16bytes configuration data for 8
RC hotkeys configuration.
Read 12.3.3 for details.
Front Panel Hot Keys
When b5 = 1
b2 b1 b0 : X1X
This command is followed by
sending 3 bytes (24keys) of
configuration data to set any key
as hotkey.
Read
segment is located on
segment 1, the bits b3-b0 are
“0000”. If b segment is
located on segment 2, the
bits b3-b0 are “0001” and so
on. on page 37
Section : Thus, if the a
b1
LSB
b0
for details.
Commands
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