Preliminary W91312N
BLOCK DIAGRAM
XT XT
HKS
B/M
MODE
SYSTEM CLOCK
GENERATION
READ/WRITE
COUNTER
ROW
(R1 to R4)
KEYBOARD
INTERFACE
RAM
CONTROL
LOGIC
PULSE
CONTROL
LOGIC
T/P MUTE
DP
COLUMN
(C1 to C4)
LOCATION
LATCH
DTMF
D/A
CONVERTER
ROW & COLUMN
PROGRAMMABLE
COUNTER
DATA LATCH
& DECODER
FUNCTIONAL DESCRIPTION
Keyboard Operation
C1
1
4
7
∗/T
R/P2
•
•
•
•
C2
2
5
8
0
R
C3
3
6
9
#
F3
C4
R1
F1
F2
R/P1
F4
R2
R3
R4
V
X
R/P1, R/P2: Redial and pause function key, P1 is 3.6 sec. and P2 is 2.0 sec.
∗/T: ∗
in tone mode and P→T in pulse mode
F1,
…,
F4: Flash keys, the flash break time of F1 = 600 mS, F2 = 100 mS, F3 = 300 mS, F4 = 73
mS
R: One-key redial function
R/P: R/P1 or R/P2.
Fn: F1, ..., F4
Notes: D1, ..., Dn, D1', ..., Dn': 0, ..., 9, */T, #
-3-
Publication Release Date: May 2000
Revision A1
WINBOND [ WINBOND ]
