Preliminary W91312N
BLOCK DIAGRAM
HKS
B/M
MODE
XT XT
SYSTEM CLOCK
GENERATION
ROW
(R1 to R4)
COLUMN
(C1 to C4)
DTMF
KEYBOARD
INTERFACE
READ/WRITE
COUNTER
RAM
LOCATION
LATCH
CONTROL
LOGIC
PULSE
CONTROL
LOGIC
T/P MUTE
DP
D/A
CONVERTER
ROW & COLUMN
PROGRAMMABLE
COUNTER
DATA LATCH
& DECODER
FUNCTIONAL DESCRIPTION
Keyboard Operation
C1
C2
1
2
4
5
7
8
∗/T
0
R/P2 R
C3 C4
3
R1
6 F1 R2
9 F2 R3
# R/P1 R4
F3 F4 VX
• 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
Notes: D1, ..., Dn, D1', ..., Dn': 0, ..., 9, */T, #
R/P: R/P1 or R/P2.
Fn: F1, ..., F4
Publication Release Date: May 2000
-3-
Revision A1