GMS30C7201 Datasheet, PDF (257/352 Pages) Hynix Semiconductor – 60MHz operation frequency Low power consumption

Slow AMBA Peripherals
TIC in register (TICIN)
8-bit readable and writable register that is used instead of the scanin value (value from
KeyPad) in case of TIC mode. For example, 1110_1100 means 4th key, 7th key and 8th key in
the current scan column are pressed. Refer to Table 13-21: TIC in register on page 13-29.
Bit
Initial value
Description
7
1
Indicates whether 1st key in the selected scan column is pressed:
0 = pressed
1 = not pressed
6
1
Indicates whether 2nd key in the selected scan column is pressed:
0 = pressed
1 = not pressed
5
1
Indicates whether 3rd key in the selected scan column is pressed:
0 = pressed
1 = not pressed
4
1
Indicates whether 4th key in the selected scan column is pressed:
0 = pressed
1 = not pressed
3
1
Indicates whether 5th key in the selected scan column is pressed:
0 = pressed
1 = not pressed
2
1
Indicates whether 6th key in the selected scan column is pressed:
0 = pressed
1 = not pressed
1
1
Indicates whether 7th key in the selected scan column is pressed:
0 = pressed
1 = not pressed
0
1
Indicates whether 8th key in the selected scan column is pressed:
0 = pressed
1 = not pressed
Table 13-21: TIC in register
Value (binary number)
1111_1111
1111_1110
1111_1101
:
:
:
0000_0001
Initial value
0000_0000
Description
present scanin value
GMS30C7201 Data Sheet
13-29