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PRELIMINARY
KEYPAD INTERFACE
S3C6400X III RISC MICROPROCESSOR
40-10
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
Specifications and information herein are subject to change without notice.
KEYPAD INTERFACE ROW DATA INPUT REGISTER
Register
address
R/W
Description
Reset Value
KEYIFROW 0x7E00A00C R KEYPAD
interface row data input register
Reflects input ports
KEYIFROW Bit
Description
KEYIFROW [7:0]
KEYPAD interface row data input register (read only)
This register values from input ports are not filtered data.
Reserved [31:8]
-
KEYPAD INTERFACE DEBOUNCING FILTER CLOCK DIVISION REGISTER
Register
address
R/W
Description
Reset Value
KEYIFFC 0x7E00A010
R/W
KEYPAD
interface debouncing filter clock
division register
0x0
KEYIFFC
Bit
Description
KEYIFFC [9:0]
KEYPAD interface debouncing filter clock division register.
User can set compare value for 10-bit up-counter.
This register value means when FC_EN bit is HIGH.
FCLK = FLT_CLK / (KEYIFFC[9:0] + 1)
( FLT_CLK is RTCCLK(32Khz) or OSC_IN (10 ~ 12Mhz) )
Reserved [31:10]
-