Rainbow Electronics W90N745CDG User Manual
Page 380
W90N745CD/W90N745CDG
- 376 -
BITS
DESCRIPTION
[31:26] RESERVED
-
[25] EN3KY
Enable three-keys detection
Setting this bit enables hardware to detect 3 keys specified by
software
[24] ENRST
Enable three-key reset
Setting this bit enable hardware reset when three-key is detected.
EN3KY ENRST
Function
0
X
three-key function is disable
1
0
generate three-key interrupt
1
1
hardware reset by three-key-reset
[23] RESERVED
-
[22:19] K32R
The #2 key row address
The #2 means the row address and the column address is the highest
of the specified 3-kyes.
[18:16] K32C
The #2 key column address
[15] RESERVED
-
[14:11] K31R
The #1 key row address
The #1 means the row address and the column address is the 2nd of
the specified 3-kyes.
[10:8] K31C
The #1 key column address
[7] RESERVED
-
[6:3] K30R
The #0 key row address
The #0 means the row address and the column address is the
lowest of the specified 3-kyes.
[2:0] K30C
The #0 key column address
Application Note: Due to hardware scan from {row[0], col[0]}, {row[0], col[1]}, …, to {row[15], col[7]}
the {K30R,K30C} should be filled the lowest address of the three-keys. For example, if {2,0} {4,6},
{1,3} keys are defined as three-keys. Software should set {K30R, K30C} = {1, 3}, {K31R, K31C} = {2,
0} and {K32R, K32C} = {4, 6}.