PC8374L Datasheet, PDF (95/239 Pages) National Semiconductor (TI) – SensorPathTM SuperI/O with Glue Functions

Winbond Electronics Corp. Advanced PC Product Center
4.0 System Wake-Up Control (SWC) (Continued)
4.3.6 LED Blink Control Register (LEDBLNK)
This register controls the advanced blinking rate of the two LEDs connected to pins GRN_LED and YLW_LED of the
PC8374L device. It is reset to 70h.
Power Well: V_SB3
Location: Offset 03h, when LED_OPT = 00 in the SWC_CTL register
Type:
R/W
Bit
Name
Reset
7
Reserved
0
6
5
4
GRNBLNK
1
1
1
3
Reserved
0
2
1
0
YLWBLNK
0
0
0
Bit
Description
7 Reserved.
6-4 GRNBLNK (Green LED Blink Rate). These bits control the blinking rate of GRN_LED output.
Bits
6 5 4 Rate (Hz) Duty Cycle
0 0 0: Off
0 0 1: 0.25
0 1 0: 0.5
0 1 1: 1
1 0 0: 2
1 0 1: 3
1 1 0: 4
1 1 1: On
Always inactive
12.5%
25%
50%
50%
50%
50%
Always active (default)
3 Reserved.
2-0 YLWBLNK (Yellow LED Blink Rate). These bits control the blinking rate of YLW_LED output.
Bits
2 1 0 Rate (Hz) Duty Cycle
0 0 0: Off
0 0 1: 0.25
0 1 0: 0.5
0 1 1: 1
1 0 0: 2
1 0 1: 3
1 1 0: 4
1 1 1: On
Always inactive (default)
12.5%
25%
50%
50%
50%
50%
Always active
Revision 1.1
95
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