W91510N SERIES
TONE/PULSE DIALER WITH HANDFREE
AND SAVE FUNCTIONS
Publication Release Date: May 1997
- 1 -
Revision A2
GENERAL DESCRIPTION
The W91510N series are Si-gate CMOS ICs that provide the necessary signals for tone or pulse
dialing. The W91510N series provide one-key redial, handfree dialing, key tone, save, and redial
functions.
FEATURES
DTMF/pulse switchable dialer
Two by 32-digit redial and save memory
Pulse-to-tone (*/T) keypad for long distance call operation
Uses 5
4 keyboard
Easy operation with redial, flash, pause, and */T keypads
Pause, pulse-to-tone (*/T) can be stored as a digit in memory
On-hook debounce time: 150 mS
Dialing rate (10 ppS or 20 ppS ) selectable by bonding option
Minimum tone output duration: 93 msec.
Minimum intertone pause: 93 msec.
Flash break time (73, 100, 300, 600 msec.) selectable by keypad; pause time is 1.0 sec.
On-chip power-on reset
Uses 3.579545 MHz crystal or ceramic resonator
Packaged in 18 or 20-pin plastic DIP
The different dialers in the W91510N series are shown in the following table:
TYPE NO.
REPLACEMENT
TYPE NO.
PULSE
(ppS)
FLASH
(mS)
M/B
HANDFREE
DIALING
PACKAGE
(PINS)
W91510N
W91510
10
600/100/300/73
Pin
-
18
W91511N
W91511
20
600/100/300/73
Pin
-
18
W91510AN
W91510A
10
600/100/300/73
Pin
Yes
20
W91511AN
W91511A
20
600/100/300/73
Pin
Yes
20
W91510N SERIES
- 2 -
PIN CONFIGURATIONS
C4
1
2
3
4
5
6
7
8
9
10
HKS
DTMF
MODE
R4
R3
R2
R1
V
DD
13
18
20
19
17
16
15
14
12
11
HFO
W91510AN/W91511AN
C1
C2
C3
SS
V
XT
XT
T/P MUTE
HFI
DP
W91510N/W91511N
1
2
3
4
5
6
7
8
9
HKS
DTMF
MODE
R4
R3
R2
R1
V
DD
12
18
17
16
15
14
10
11
13
C1
C2
C3
C4
SS
V
XT
XT
T/P MUTE
KT
DP
KT
PIN DESCRIPTION
SYMBOL
18-PIN
20-PIN
I/O
FUNCTION
Column-
Row
Inputs
1
-
4
&
15
-
18
1
-
4
&
17
-
20
I
The keyboard inputs may be used with either a standard
5
4 keyboard or an inexpensive single contact (Form
A) keyboard. Electronic input from a
C can also be
used. A valid key-in is defined as a single row being
connected to a single column.
XT, XT
7, 8
7, 8
I, O
A built-in inverter provides oscillation with an
inexpensive 3.579545 MHz crystal or ceramic
resonator.
T/P MUTE
9
9
O
The T/P MUTE is a conventional CMOS N-channel
open drain output.
The output transistor is switched on during dialing
sequence, one-key redial break, and flash break time.
Otherwise, it is switched off.
W91510N SERIES
Publication Release Date: May 1997
- 3 -
Revision A2
Pin Description, continued
SYMBOL
18-PIN 20-PIN
I/O
FUNCTION
MODE
13
15
I
Pulling mode pin to V
SS
places the dialer in tone mode.
Pulling mode pin to V
DD
places the dialer in pulse mode
(10 ppS; 20 ppS for W91511N/511AN, M/B = 40:60).
Floating mode pin places the dialer in pulse mode
(10 ppS; 20 ppS for W91511N/511AN, M/B = 33.3:66.7).
HKS
10
12
I
Hook switch input.
HKS = V
DD
: On-hook state. Chip in sleeping mode, no
operation.
HKS = V
SS
: Off-hook state. Chip is enabled for normal
operation.
HKS pin is pulled to V
DD
by an internal resistor.
DP
11
13
O
N-channel open drain dialing pulse output.
Flash key will cause DP to be active in either tone mode or
pulse mode.
The timing diagram for pulse mode is shown in Figure 1(a, b,
c).
V
DD
, V
SS
14, 6
16, 6
I
Power input pins.
KT
5
5
O
Key-tone signal output. The key tone is generated for all
valid keys. Frequency is 600 Hz and duration is 35 mS.
DTMF
12
14
O
In pulse mode, this pin remains in low state at all times.
In tone mode, it will output a dual or single tone.
Detailed timing diagram for tone mode is shown in Figure
2(a, b, c).
Specified
Actual
Error %
Output Frequency
R1
R2
R3
R4
C1
C2
C3
697
770
852
941
1209
1336
1477
699
766
848
948
1216
1332
1472
+0.28
-0.52
-0.47
+0.74
+0.57
-0.30
-0.34
W91510N SERIES
- 4 -
Pin Description, continued
SYMBOL
18-PIN
20-PIN
I/O
FUNCTION
HFI, HFO
-
10, 11
I, O
Handfree control pins. The handfree control state is
toggled on by a low pulse on the HFI input pin. The
status of the handfree control state is described in the
following table:
CURRENT STATE
Input
HFO
Dialing
High
Yes
On Hook
High
Low
No
Off Hook
High
Low
Yes
On Hook
Off Hook
Low
Yes
Off Hook
Low
On Hook
Low
No
Off Hook
High
On Hook
High
Yes
Low
Hook SW.
HFO
NEXT STATE
HFI
HFI
HFI
HFI pin is pulled to V
DD
by an internal resistor.
Detailed timing diagrams are shown in Figure 3.
BLOCK DIAGRAM
ROW
COLUMN
DTMF
XT
XT
RAM
COUNTER
SYSTEM CLOCK
GENERATOR
LOCATION
LATCH
D/A
ROW & COLUMN
PROGRAMMABLE
COUNTER
DATA LATCH
& DECODER
READ/WRITE
(R1 to R4, Vx)
(C1 to C4)
T/P MUTE
HFO
CONTROL
LOGIC
PULSE
CONTROL
LOGIC
KEYBOARD
INTERFACE
CONVERTER
MODE
HKS
HFI
DP
KT
W91510N SERIES
Publication Release Date: May 1997
- 5 -
Revision A2
FUNCTIONAL DESCRIPTION
Keyboard Operation
C1
C2
C3
C4
1
2
3
SAVE
R1
4
5
6
F1
R2
7
8
9
F2
R3
/T
0
#
R/P1
R4
R/P2
R
F3
F4
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, flash break time of F1 = 600 mS, F2 = 100 mS, F3 = 300 mS, F4 = 73 mS
SAVE: Save function key
R: One-key redial function
Notes:
D1, ..., Dn, D1', ..., Dn': 0, ..., 9, */T, #
R/P: R/P1 or R/P2.
Fn: F1, ..., F4
Normal Dialing
OFF HOOK
(or
ON HOOK
&
HFI
),
D1
,
D2
, ...,
Dn
1. D1, D2,
...
, Dn will be dialed out.
2. Dialing length is unlimited, but redial is inhibited if length exceeds 32 digits in normal dialing.
Redialing
1.
OFF HOOK
(or
ON HOOK
&
HFI
),
D1
,
D2
, ...,
Dn
, Busy,
Come
ON HOOK
,
OFF HOOK
(or
ON HOOK
&
HFI
),
R/P
a. The redial memory content will be dialed out.
b. The
R/P
key can execute the redial function only as the first key-in after off-hook; otherwise, it
executes pause function.
c. If redialing length exceeds 32 digits, the redialing function will be inhibited.
2.
OFF HOOK
(or
ON HOOK
&
HFI
),
D1
,
D2
, ...,
Dn
, Busy,
R
a. The one-key redialing function timing diagram is shown in Figure 4.
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