lm8328tmx National Semiconductor Corporation, lm8328tmx Datasheet - Page 20

• Manufacturer Part Number: lm8328tmx
• Description: Mobile I/o Companion Supporting Keyscan, I/o Expansion Pwm, And Access.bus Host Interface
• Manufacturer: National Semiconductor Corporation

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13.1.4 KBDDEDCFG - Dedicated Key Register
13.1.5 KBDRIS - Keyboard Raw Interrupt Status Register
Register - Name
Register - Name
KBDDEDCFG
COL[11:10]
Bit - Name
Bit - Name
(reserved)
ROW[7:2]
REVTINT
COL[9:2]
KBDRIS
RELINT
RKLINT
RSINT
Address
Address
15:10
0x04
0x06
Bit
9:8
7:0
Bit
7:4
TABLE 23. KBDRIS - Keyboard Raw Interrupt Status Register
3
2
1
0
TABLE 22. KBDDEDCFG - Dedicated Key Register
Default
Default
Type
0xFF
Type
0x3F
0x03
R/W
0x0
0x0
0x0
0x0
R
Defines if a key is used as a standard keyboard/GPIO pin or whether
it is used as dedicated key input.
Each bit in ROW [7:2] corresponds to ball KPX7 : KPX2.
Bit=0: the dedicated key function applies.
Bit=1: no dedicated key function is selected. The standard GPIO
functionality applies according to register IOCFG or defined keyboard
matrix.
Each bit in COL [11:10] corresponds to ball KPY11 : KPY10.
Bit=0: the dedicated key function applies.
Bit=1: no dedicated key function is selected. The standard GPIO
functionality applies according to register IOCFG or defined keyboard
matrix.
Each bit in COL [9:2] corresponds to ball KPY9 : KPY2 and can be
configured individually.
Bit=0: the dedicated key function applies.
Bit=1: no dedicated key function is selected. The standard GPIO
functionality applies according to register IOCFG or defined keyboard
matrix.
Returns the status of stored keyboard interrupts.
(reserved)
Raw event lost interrupt.
More than 8 keyboard events have been detected and caused the
event buffer to overflow. This bit is cleared by setting bit EVTIC of the
KBDIC register.
Raw keyboard event interrupt.
At least one key press or key release is in the keyboard event buffer.
Reading from EVTCODE until the buffer is empty will clear this
interrupt.
Raw key lost interrupt indicates a lost key-code.
This interrupt is asserted when RSINT has not been cleared upon
detection of a new key press or key release, or when more than 4 keys
are pressed simultaneously.
Raw scan interrupt.
Interrupt generated after keyboard scan, if the keyboard status has
changed.
20
Register Function
Register Function
Bit Function
Bit Function