W91340N SERIES
BLOCK DIAGRAM
XT
XT
SYSTEM CLOCK
GENERATOR
HKS
HFI
ROW
(R1 to R4, Vx)
KEYBOARD
INTERFACE
COLUMN
(C1 to C4)
LOCATION
LATCH
READ / WRITE
COUNTER
CONTROL
LOGIC
MODE
H/P MUTE
RAM
PULSE
CONTROL
LOGIC
T/P MUTE
DP
HFO
ROW & COLUMN
PROGRAMMABLE
COUNTER
DTMF
D/A
CONVERTER
DATA LATCH
& DECODER
FUNCTIONAL DESCRIPTION
Keyboard Operation
C1
1
4
7
∗/T
F1
•
•
•
•
•
•
C2
2
5
8
0
F2
C3
3
6
9
#
F3
C4
S
F4
A
R/P
H
R1
R2
R3
R4
V
X
S: Store function key
H: Hold function key
A: Indirect repertory memory dialing function key
R/P: Redial and pause function key
∗/T: ∗
in tone mode and P→T in pulse mode
F1,
…,
F4: Flash keys, F1 = 600 mS, F2 = 300 mS, F3 = 73 mS, F4 = 100 mS
Notes:
D1, ..., Dn, D1', ..., Dn': 0, ..., 9, */T, #
Ln: 0, ..., 9 ; Fn: F1, ..., F4
-4-