TCA8418 Datasheet, PDF (14/37 Pages) Texas Instruments – I2C CONTROLLED KEYPAD SCAN IC WITH INTEGRATED ESD PROTECTION

TCA8418
SCPS215 – SEPTEMBER 2009 ......................................................................................................................................................................................... www.ti.com
Table 3. Register Descriptions (continued)
ADDRESS
0×13
0×14
0×15
0×16
0×17
0×18
0×19
0×1A
0×1B
0×1C
0×1D
0×1E
0×1F
0×20
0×21
0×22
0×23
0×24
0×25
0×26
0×27
REGISTER NAME
GPIO_INT_STAT3
GPIO_DAT_STAT1
(read twice to clear)
GPIO_DAT_STAT2
(read twice to clear)
GPIO_DAT_STAT3
(read twice to clear)
GPIO_DAT_OUT1
GPIO_DAT_OUT2
GPIO_DAT_OUT3
GPIO_INT_EN1
GPIO_INT_EN2
GPIO_INT_EN3
KP_GPIO1
KP_GPIO2
KP_GPIO3
GPI_EM1
GPI_EM2
GPI_EM3
GPIO_DIR1
GPIO_DIR2
GPIO_DIR3
GPIO_INT_LVL 1
GPIO_INT_LVL 2
REGISTER
DESCRIPTION
GPIO interrupt status
GPIO data status
7
N/A
0
R7DS
GPIO data status
C7DS
GPIO data status
GPIO data out
GPIO data out
GPIO data out
GPIO interrupt enable
GPIO interrupt enable
GPIO interrupt enable
Keypad or GPIO
selection
0: GPIO
1: KP matrix
Keypad or GPIO
selection
0: GPIO
1: KP matrix
Keypad or GPIO
selection
0: GPIO
1: KP matrix
GPI event mode 1
GPI event mode 2
GPI event mode 3
GPIO data direction
0: input
1: output
GPIO data direction
0: input
1: output
GPIO data direction
0: input
1: output
GPIO edge/level detect
0: low
1: high
GPIO edge/level detect
0: low
1: high
N/A
0
R7DO
0
C7DO
0
N/A
0
R7IE
0
C7IE
0
N/A
0
ROW7
0
COL7
0
N/A
0
ROW7
0
COL7
0
N/A
0
R7DD
0
C7DD
0
N/A
0
R7IL
0
C7IL
0
6
N/A
0
R6DS
C6DS
N/A
0
R6DO
0
C6DO
0
N/A
0
R6IE
0
C6IE
0
N/A
0
ROW6
0
COL6
0
N/A
0
ROW6
0
COL6
0
N/A
0
R6DD
0
C6DD
0
N/A
0
R6IL
0
C6IL
0
5
N/A
0
R5DS
C5DS
N/A
0
R5DO
0
C5DO
0
N/A
0
R5IE
0
C5IE
0
N/A
0
ROW5
0
COL5
0
N/A
0
ROW5
0
COL5
0
N/A
0
R5DD
0
C5DD
0
N/A
0
R5IL
0
C5IL
0
4
N/A
0
R4DS
3
2
1
N/A N/A C9IS
0
0
0
R3DS R2DS R1DS
0
C8IS
0
R0DS
C4DS C3DS C2DS C1DS C0DS
N/A
0
R4DO
0
C4DO
0
N/A
0
R4IE
0
C4IE
0
N/A
0
N/A
0
R3DO
0
C3DO
0
N/A
0
R3IE
0
C3IE
0
N/A
0
N/A
0
R2DO
0
C2DO
0
N/A
0
R2IE
0
C2IE
0
N/A
0
C9DS
R1DO
0
C1DO
0
C9DO
0
R1IE
0
C1IE
0
C9IE
0
C8DS
R0DO
0
C0DO
0
C8DO
0
R0IE
0
C0IE
0
C8IE
0
ROW4 ROW3 ROW2 ROW1 ROW0
0
0
0
0
0
COL4 COL3 COL2 COL1 COL0
0
0
0
0
0
N/A
N/A N/A COL9 COL8
0
0
0
0
0
ROW4
0
COL4
0
N/A
0
ROW3
0
COL3
0
N/A
0
ROW2
0
COL2
0
N/A
0
ROW1
0
COL1
0
COL9
0
ROW0
0
COL0
0
COL8
0
R4DD R3DD R2DD R1DD R0DD
0
0
0
0
0
C4DD C3DD C2DD C1DD C0DD
0
0
0
0
0
N/A
N/A N/A C9DD C8DD
0
0
0
0
0
R4IL
0
R3IL R2IL R1IL
0
0
0
R0IL
0
C4IL
0
C3IL C2IL C1IL
0
0
0
C0IL
0
14
Submit Documentation Feedback
Product Folder Link(s): TCA8418
Copyright © 2009, Texas Instruments Incorporated