Multiple Channel Capacitive Touch Sensor and LED Driver
Datasheet
‘1’ - The LED8 output is direct. A setting of ‘1’ in the LED 8 Output register will cause the output
to be driven to a logic ‘1’ or left in the high-z state as determined by its output type and LED
behavior. Similarly, the duty cycles corresponding to Pulse 1, Pulse 2, and Breathe operations will
indicate to the amount of time that the LED is driven to a logic ‘1’ state (corresponding to “inactive”).
Bit 6 - LED7_POL - Determines the polarity of the LED7 output.
Bit 5 - LED6_POL - Determines the polarity of the LED6 output.
Bit 4 - LED5_POL - Determines the polarity of the LED5 output.
Bit 3 - LED4_POL - Determines the polarity of the LED4 output.
Bit 2 - LED3_POL - Determines the polarity of the LED3 output.
Bit 1 - LED2_POL - Determines the polarity of the LED2 output.
Bit 0 - LED1_POL - Determines the polarity of the LED1 output.
5.38.2
LED Polarity 2
Bit 2 - LED11_POL - Determines the polarity of the LED11 output.
‘0’ (default) - The LED11 output is inverted. A setting of ‘1’ in the LED 11 Output register will cause
the output to be driven to a logic ‘0’ as determined by the LED behavior. Similarly, the duty cycles
corresponding to Pulse 1, Pulse 2, and Breathe operations will indicate the amount of time that the
LED is driven to a logic ‘0’ state (corresponding to “active”).
‘1’ - The LED11 output is direct. A setting of ‘1’ in the LED 11 Output register will cause the output
to be driven to a logic ‘1’ or left in the high-z state as determined by its output type and LED
behavior. Similarly, the duty cycles corresponding to Pulse 1, Pulse 2, and Breathe operations will
indicate to the amount of time that the LED is driven to a logic ‘1’ state (corresponding to “inactive”).
Bit 1 - LED10_POL - Determines the polarity of the LED10 output.
Bit 0 - LED9_POL - Determines the polarity of the LED9 output.
5.39 Sensor LED Linking Registers
Table 5.57 Sensor LED Linking Registers
ADDR
R/W
REGISTER
B7
B6
B5
B4
B3
B2
B1
B0
DEFAULT
UP_
DOWN
LLINK
Sensor LED
Linking
CS7_
LED7
CS6_
LED6
CS5_
LED5
CS4_
LED4
CS3_
LED3
CS2_
LED2
CS1_
LED1
80h
R/W
00h
The Sensor LED Linking registers control whether a Capacitive Touch Sensor is linked to an LED
output or not. If the corresponding bit is set, then the appropriate LED output will change states defined
by the LED Behavior controls (see Section 5.40) in response to the Capacitive Touch sensor.
If the LED channel is configured as an input, then the corresponding Sensor LED Linking bit is ignored.
Bit 7 - UP_DOWN_LINK - Links the LED10 output to a detected UP condition on the group including
a slide in the “up” direction, a tap on the “up” side of the group or a press and hold condition on the
“up” side of the group. The LED10 driver will be actuated and will behave as determined by the
LED10_CTL bits. This bit also links the LED9 output to a detected DOWN condition on the group
including a slide in the “down” direction, a tap on the “down” side of the group or a press and hold
condition on the “down” side of the group. The LED9 driver will be actuated and will behave as
determined by the LED9_CTL bits.
Revision 1.65 (08-11-09)
SMSC CAP1014
DATA6S6HEET
SMSC [ SMSC CORPORATION ]
