CY8C20121 CYPRESS [Cypress Semiconductor], CY8C20121 Datasheet - Page 9

• Manufacturer Part Number: CY8C20121
• Description: CapSense Express-One Button and Two Button Capacitive Controllers
• Manufacturer: CYPRESS [Cypress Semiconductor]

7.1 OUTPUT_PORT
OUTPUT_PORT: 04h
This register is used to write data to DIG output port. Pins defined as output of combinational logic (in OP_SEL_x register) cannot be
changed using this register.
7.2 CS_ENABLE
CS_ENABLE: 07h
(
This register is used to enable CapSense inputs. This register should be set before setting finger threshold (0x66, 0x67) and
IDAC setting (0x70, 0x71) registers.
Document Number: 001-53516 Rev. **
Bit
1:0
Bit
1:0
Writable only in Setup mode)
Access: FD
Access: FD
Access: FD
Access: FD
1 Button
Bit Name
2 Button
Bit Name
1 Button
Bit Name
2 Button
Bit Name
Output Port Register
Select CapSense Input Register
Name
DIG [1:0]
Name
CS [1:0]
7
7
7
7
6
6
6
6
5
5
5
5
PRELIMINARY
Description
A bit set in this register sets the logic level of the output.
0
1
Description
These bits are used to enable CapSense inputs.
0
1
4
4
4
4
Logic ‘0’
Logic ‘1’
Disable CapSense input
Enable CapSense input
3
3
3
3
2
2
2
2
CY8C20111, CY8C20121
1
1
1
1
DIG[1:0]
CS[1:0]
RW:03
W:03
DIG[0]
RW:01
CS[0]
W:01
0
0
0
0
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