W91473A [WINBOND]
14-MEMORY TONE/PULSE SWITCHABLE DIALER WITH HANDFREE AND LOCK FUNCTION; 14 -MEMORY音频/脉冲可转换拨号与免提和LOCK功能
| 型号： | W91473A |
| 厂家： | 
WINBOND |
| 描述： | 14-MEMORY TONE/PULSE SWITCHABLE DIALER WITH HANDFREE AND LOCK FUNCTION |
| 文件： | 总20页 (文件大小：233K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
W91473 SERIES
14-MEMORY TONE/PULSE SWITCHABLE DIALER
WITH HANDFREE AND LOCK FUNCTIONS
GENERAL DESCRIPTION
The W91473 series are Si-gate CMOS IC tone/pulse switchable dialers containing a 14-channel
automatic dialing memory, including a 16-digit ´ 3 emergency dialing memory and a 16-digit ´ 10
channel repertory memory that provides a 32-digit mercury memory. These dialers also provide flash,
clear, hold, lock, and one-key redial functions.
FEATURES
· DTMF/Pulse switchable dialer
· 32-digit LNB (last number buffer) memory
· 32-digit mercury memory
· 16-digit ´ 3 one-touch direct repertory memory
· 16-digit ´ 10 direct repertory memory
· Uses 7 ´ 5 keyboard
· Flash time: 98 mS, 305 mS, or 600 mS (selectable by keypad option)
· Minimum tone output duration: 93 mS
· Minimum intertone pause: 93 mS
· On-chip power-on reset
· Uses 3.579545 MHz crystal or ceramic resonator
· Packaged in 22, 24, or 28-pin plastic DIP
· The different dialers in the W91473 series are shown in the following table:
TYPE NO.
PULSE MEMORY
(ppS)
MERCURY
MEMORY
HOLD HANDFREE LOCK PACKAGE
W91473
10
10
10
14
14
14
14
14
14
14
14
14
14
Yes
-
Yes
-
Yes
Yes
Yes
-
Yes
-
Yes
Yes
Yes
Yes
-
-
-
-
Yes
-
Yes
-
Yes
-
Yes
-
22
22
24
24
28
28
28
28
22
22
W91473L
W91473A
W91473AL
W91473B
W91473BL
W91473C
W91473CL
W91473D
W91473DL
Yes
Yes
Yes
Yes
Yes
Yes
-
10
10/20
10/20
10/20
10/20
10
Save Memory
Save Memory
Save Memory
Save Memory
10
-
-
Yes
Publication Release Date: February 1995
Revision A3
- 1 -
W91473 SERIES
PIN CONFIGURATIONS
C1
C2
C3
C4
C5
C6
C7
NC
KT
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1
2
3
4
5
6
7
8
9
R5
R4
R3
R5
C1
C2
C3
C4
C5
C6
C7
1
24
23
22
21
20
19
18
R2
C1
C2
C3
C4
1
2
3
4
22
21
20
R5
R4
R3
R4
2
R1
3
R3
HPM MUTE
NC
4
R2
R2
R1
5
19
18
17
16
15
14
13
12
DRS
5
6
R1
6
C5
C6
HPM MUTE
V
DD
HPM MUTE
7
V
DD
V
SS
10
11
12
13
14
MODE
DTMF
V
SS
V
DD
C7
7
8
MODE
DTMF
17
16
15
14
13
XT
V
SS
8
MODE
DTMF
XT
9
XT
DP
XT
9
10
11
12
XT
T/P MUTE
HFI
DP
T/P MUTE
HFI
HKS
HFO
10
11
XT
DP
HKS
HFO
HKS
T/P MUTE
W91473A
W91473B/C
W91473/D
C1
C2
C3
C4
C5
C6
C7
NC
KT
28
27
26
25
24
23
22
21
20
19
18
17
16
15
R5
1
R4
2
R3
3
C1
C2
C3
C4
C5
C6
C7
24
23
22
21
20
19
18
17
16
15
14
13
R5
R4
R3
R2
R1
1
22
21
20
19
18
17
16
15
14
13
12
R5
4
R2
C1
C2
C3
C4
C5
C6
C7
1
2
2
5
R1
R4
R3
R2
R1
3
6
HPM MUTE
3
4
7
4
LOCK
DRS
5
5
8
6
LOCK
V
DD
6
9
LOCK
V
DD
7
V
SS
V
DD
7
10
11
12
13
14
MODE
DTMF
DP
V
SS
8
MODE
DTMF
V
SS
MODE
DTMF
8
XT
XT
XT
9
XT
XT
9
XT
T/P MUTE
HFI
10
11
12
DP
10
11
DP
HKS
HFO
HKS
HFO
T/P MUTE
HFI
HKS
T/P MUTE
W91473L/DL
W91473AL
W91473BL/CL
- 2 -
W91473 SERIES
PIN DESCRIPTION
SYMBOL
22-PIN
24-PIN
28-PIN
I/O
FUNCTION
Column-
Row
Inputs
I
The keyboard input may be used with
either the standard 7 ´ 5 keyboard or an
inexpensive single contact (form A)
keyboard. Electronic input with mC can
also be used.
1- 7
&
18- 22
1- 7
&
20- 24
1- 8
&
24- 28
A valid key entry is defined by a single
row being connected to a single column.
9, 10
11
9, 10
11
11, 12
13
I, O A built-in inverter provides oscillation with
an inexpensive 3.579545 MHz crystal or
ceramic resonator.
XT, XT
T/P
O
The T/P MUTE is a conventional CMOS
N-channel open drain output. The output
transistor is switched on during pulse and
tone mode dialing sequence and flash
break. Otherwise, it is switched off.
MUTE
13
15
15
17
17
19
O
I
N-channel open drain dialing pulse output
(Figure 1).
DP
Flash key causes DP to go active when in
pulse mode and tone mode.
MODE
Pulling mode pin to VSS places the dialer
in tone mode.
Pulling mode pin to VDD places the dialer
in pulse mode (10 ppS, M/B = 2:3).
Leaving mode pin floating places the
dialer in pulse mode (10 ppS, M/B = 1:2).
12
14
16
I
Hook switch input.
HKS
HKS = 1: On-hook state. Chip in sleep
mode, no operation.
HKS = 0: Off-hook state. Chip enabled for
normal operation.
HKS pin is pulled to VDD by internal
resistor.
Publication Release Date: February 1995
Revision A3
- 3 -
W91473 SERIES
Pin Description, continued
SYMBOL
22-PIN
24-PIN
28-PIN
I/O
FUNCTION
HPM
MUTE
17
(only for
W91473/D
)
19
(only for
W91473A)
23
O
The HPM MUTE is a conventional
inverter output.
During pulse dialing, flash, hold, and
mercury mute functions, this pin will
output an active high.
It remains in a low state at all other times.
NC
-
-
8, 22
(W91473
B/C)
-
I
No connection.
17
(W91473L
/DL)
19
(W91473
AL)
22
(W91473
BL/CL)
LOCK
The function of the LOCK pin is shown
below:
LOCK PIN
FUNCTION
VDD
"0," " 9" dialing inhibited
Floating
VSS
Normal dialing
"0" dialing inhibited
DTMF
14
16
18
O
In pulse mode, remains in low state at all
times. In tone mode, outputs a dual or
single tone.
Detailed timing diagram for tone mode is
shown in Figure 2.
OUTPUT FREQUENCY
Error %
Specified
Actual
R1
R2
697
770
852
941
1209
1336
+0.28
-0.52
-0.47
+0.74
+0.57
-0.30
699
766
848
R3
R4
C1
C2
C3
948
1216
1332
1472
1477
-0.34
VDD, VSS
16, 8
1, 8
20, 10
I
Power input pins.
- 4 -
W91473 SERIES
Pin Description, continued
SYMBOL
22-PIN
24-PIN
28-PIN
I/O
FUNCTION
-
12, 13
14, 15
I, O Handfree control pins. A low pulse on the
HFI, HFO
HFI input pin toggles the handfree control
state. Status of the handfree control state
is listed in the following table:
NEXT STATE
CURRENT STATE
Input
Dialing
Hook Sw. HFO
HFO
High
-
Low
High
High
-
¡ õ
¡ õ
Yes
No
HFI
HFI
HFI
On Hook
Off Hook
On Hook
Off Hook
Off Hook
Low
¡ õ Low
Yes
Yes
No
Off Hook
Low
On Hook Low
High
Low
High
Yes
On Hook
The HFI pin is pulled to VDD by an
internal resistor.
KT
-
-
-
-
9
O
I
Keytone signal output. The keytone will
be generated in all valid keys are pressed
in tone mode. Frequency is 600 Hz and
duration is 35 mS.
DRS
21
Dial rate selection. This pin is pulled to
VDD by an internal resistor.
DIAL
RATE
MODE
PIN
DRS
TONE/PULSE
M/B
VDD
Floating
VSS
Pulse
Pulse
Tone
Pulse
Pulse
Tone
10 ppS 2:3
1
1:2
10 ppS
-
-
VDD
1:2
1:2
-
10 ppS
20 ppS
-
0
Floating
VSS
Publication Release Date: February 1995
Revision A3
- 5 -
W91473 SERIES
BLOCK DIAGRAM
XT
XT
HKS
LOCK
MODE
DRS
SYSTEM CLOCK
GENERATOR
P
U
L
S
E
HFI
C
O
N
T
R
O
L
K
E
Y
B
O
A
R
D
KT
C
O
T/P MUTE
N
READ/WRITE
COUNTER
T
R
HPM MUTE
O
ROW
L
HFO
L
(R1 to R5)
O
G
I
L
I
RAM
O
G
I
N
T
E
R
F
A
C
E
DP
C
C
COLUMN
LOCATION
LATCH
(C1 to C7)
ROW & COLUMN
PROGRAMMABLE
COUNTER
DATA LATCH
& DECODER
D/A CONVERTER
DTMF
FUNCTIONAL DESCRIPTION
Keyboard Operation
C1
1
C2
2
C3
3
C4
S
C5
C6
C7
EM1
EM2
EM3
H
M00
M01
M02
M03
M04
M05
M06
M07
M08
M09
R1
4
5
6
R2
R3
R4
R5
7
8
9
CLR
R/P
R
*/T
F1
0
#
F2
F3
*MER
Note:
*MER
location in W91473C/CL or W91473D/DL is SAVE memory.
· S:Store function key
- 6 -
W91473 SERIES
· F1, F2, F3: Flash keys
· R: One-key redial
· H: Hold function key
· M0j: Direct repertory memory
· EMi: One-touch memory for emergency call
· */T: * & P® T
· CLR: Clear key
· R/P: Redial and pause function key
· MER: One-touch memory for mercury code dialing
Note: Dn = 0 to 9, *, #, M0j = M00 to M09 (j = 0 to 9).
Normal Dialing
OFF HOOK (or ON HOOK
&
), D1
,
D2 , ..., Dn
¡ õ
HFI
1. D1, D2, ..., Dn will be dialed out.
2. Dialing length is unlimited, but redial is inhibited if length oversteps 32 digits.
Redialing
1. OFF HOOK
,
D1
&
,
D2 , ..., Dn BUSY, Come ON HOOK
,
OFF HOOK
(or ON HOOK
or ON HOOK
), R/P
D1
¡ õ
¡ õ
HFI
HFI
&
,
,
D2 , ..., Dn BUSY,
Come
¡ õ
HFI
¡ õ
,
R/P
HFI
The R/P key can execute redial function only as first key-in after off-hook. Otherwise, it will
execute pause function.
2. OFF HOOK (or ON HOOK
&
), D1
,
D2 , ..., Dn
,
R
¡ õ
HFI
a. The one-key redial function timing diagram is shown in Figure 4.
b. If dialing D1 to Dn is completed, pressing the
of
R
key will cause the pulse output pin
to go low for 2.2 seconds. Break time and a 600 mS pause will automatically be added.
c. If the
R
key is pressed before the pulses for the number dialed out are completed, it will be
ignored.
Publication Release Date: February 1995
- 7 -
Revision A3
W91473 SERIES
Number Store
1. OFF HOOK (or ON HOOK
&
),
S
,
D1
,
D2 , ..., Dn
¡ õ
HFI
S
,
Moj (or EMi or MER
)
D1, D2, ..., Dn will be stored in memory location but will not be dialed out.
R/P and */T
function key.
keys can be stored as a digit in memory. In store mode, R/P is the pause
The store mode can be released after the store function is executed or the state of the hook switch
is changed.
2.
S
,
D1
,
D2 , ..., Dn
,
S
,
0
,
j
D1, D2, ..., Dn will be stored in memory location M0j and will not be dialed out.
3. OFFHOOK (or ON HOOK
&
), D1
,
D2 , ..., Dn
,
S
,
¡ õ
HFI
S
,
Mn
a. D1, D2, ..., Dn will be stored in memory location and will be dialed out.
S
b. The
4. D1
key must be pressed after completion of the dialing sequence.
,
D2 , ..., Dn
,
S
,
S
,
0
,
j
D1, D2, ..., Dn will be stored in memory location M0j and will be dialed out.
Repertory Dialing
OFF HOOK (or ON HOOK
&
), Moj (or EMi or MER
)
¡ õ
HFI
Access Pause
OFF HOOK (or ON HOOK
&
), D1
,
D2
,
R/P
,
D3 , ..., Dn
¡ õ
HFI
1. The pause function can be stored in memory.
2. The pause function is executed in normal dialing, redialing, or memory dialing.
3. The pause function timing diagram is shown in Figure 5.
- 8 -
W91473 SERIES
Pulse-to-Tone (*/ T)
OFF HOOK (or ON HOOK
&
), D1
,
D2 , ..., Dn
,
¡ õ
HFI
*/T
,
D1'
,
D2'
Dn'
, ...,
1. If the mode switch is set to pulse mode, then the output signal will be:
D1, D2, ..., Dn, Pause (3.6s), D1', D2', ..., Dn'
(Pulse)
(Tone)
2. If the mode switch is set to tone mode, then the output signal will be:
D1, D2, ..., Dn, * , D1', D2', ..., Dn'
(Tone)
(Tone) (Tone)
3. The dialer remains in tone mode when the digits have been dialed out and can be reset to pulse
mode only by going on-hook.
4. The P® T function timing diagram is shown in Figure 6.
5. */ T key cannot be stored as a digit in memory.
Save
1. OFF HOOK (or ON HOOK
&
),
S
,
D1
,
D2 , ..., Dn
¡ õ
HFI
S
,
SAVE
D1, D2, ..., Dn, will be stored in SAVE memory but will not be dialed out.
2. OFFHOOK (or ON HOOK
SAVE
D1, D2, ..., Dn , will be stored in SAVE memory and will be dialed out.
3. OFF HOOK (or ON HOOK ), SAVE
&
), D1
,
D2 , ..., Dn
,
S
,
¡ õ
HFI
S
,
&
¡ õ
HFI
The content of SAVE memory will be dialed out.
Flash (F = F1, F2, F3)
OFF HOOK (or ON HOOK
&
),
F
¡ õ
HFI
1. Flash key cannot be stored as a digit in memory and it has first priority among keyboard functions.
2. The system will return to the initial state after the break time is finished.
3. The flash function timing diagram is shown in Figure 7.
Publication Release Date: February 1995
- 9 -
Revision A3
W91473 SERIES
Clear key
1. CLR
,
R/P (or
R
)
Redial and one-key redial buffer will be cleared.
2. CLR Moj
Location M0j buffer content will be cleared.
3. CLR
,
,
0
,
j
Location M0j buffer content will be cleared.
CHAIN DIALING
Relationship between the memory and the chain dialing buffer:
Memory
Chain Dialing Buffer
Location
M00
Digit
16
Section 1
Section 2
Section 3
Section 4
16
¡ G
¡ G
M01
¡ G
¡ G
M08
M09
¡ G
¡ G
¡ G
¡ G
16
32
EM1
EM2
EM3
Normal Dialing
The chain dialing buffer may be divided into four sections, allowing up to four numbers to be dialed
out in sequence. For example, if the user enters M01, M03, EM1, and normal dialing (manual dialing),
the content of sections 1 to 4 will be M01, M03, EM1, and normal dialing (manual dialing). When
numbers are entered into the chain dialing buffer, there is no need to wait until the previous dialing
sequence has been completed. Numbers may be entered directly, one after the other, even while
previous numbers are being dialed out.
¡ Ï
Redial buffer content = Manual dialing + Repertory dialing.
¡ Ï
Redial buffer content = Repertory dialing + Manual dialing.
1. Manual Dialing
Repertory Dialing
2.
Manual Dialing
Repertory Dialing
¡ Ï
3. Repertory Dialing
Repertory Dialing
Redial buffer content = Repertory dialing + Repertory dialing.
¡ Ï
4. Redialing
Manual Dialing
Redial buffer content = Redialing + Manual dialing.
- 10 -
W91473 SERIES
The primary redial content may not be manual dialing. Otherwise, the last redial content will be
overwritten.
¡ Ï
5. Redialing
Repertory Dialing
Redial buffer content = Redialing + Repertory dialing.
Redialing is valid only as the first key-in after off-hook or after the handfree dialing function is
toggled on.
The second sequence should not be performed until the first sequence is completely dialed out.
¡ Ï
6. Manual Dialing
One key Redialing
Redial buffer content = Manual dialing.
The one-key redial may only be used after dialing out of a manual dialing sequence is completed.
¡ Ï
¡ Ï
7. Repertory Dialing 1(M1)
Repertory Dialing 2(M2)
or
One key Redialing
¡ Ï
One key Redialing
¡ Ï
¡ Ï
Repertory Dialing 1(M1)
Repertory Dialing 2(M2)
One key Redialing
,
ON HOOK
,
OFF HOOK
,
Redialing
M1 and M2 represent any of the repertory dialing memories.
The first redialing will dial out M1; the second will dial out M1, M2.
If dialing out of the repertory dialing memories has not been completed, the one-key redial key will
be ignored.
Dialing of the second repertory dialing memory (M2) should not be performed until the one-key
redialing operation is completed.
Notes:
Chain dialing (cascaded dialing) allows for memory or manual dialing while a previous dialing
sequence is still being dialed out.More than one sequence of manual dialing is not permitted. Entering
more than one manual dialing sequence will inhibit redialing. Chain dialing of more than four sections
is not permitted.
¡ Ï
¡ Ï
Manual Dialing
M1
Manual Dialing (two sections of manual dialing)
If more than four sections are entered, all sections after the fourth section will be ignored and
redialing will be inhibited.
¡ Ï
¡ Ï
¡ Ï
¡ Ï
Manual Dialing
M1
M2
M3
M4 (over 4 sections, ignore M4
and inhibit redial)
There is a 2.0 sec. inter-chain dialing pause for cascaded dialing.
Publication Release Date: February 1995
Revision A3
- 11 -
W91473 SERIES
MERCURY DIALING
1. Up to 32 digits may be stored.
2. Mercury dialing is activated only as the first key-in after off-hook or handfree dialing is activated.
3. The timing diagram for the mercury memory function is given below.
MER
KEY IN
DP
TP
T
IDP
T/P MUTE
DTMF
HPM MUTE
OSC.
OSCILLATION
Mercury Function Timing Diagram
ABSOLUTE MAXIMUM RATINGS
PARAMETER
DC Supply Voltage
SYMBOL
VDD- VSS
VIL
RATING
-0.3 to +7.0
VSS -0.3
UNIT
V
Input/Output Voltage
V
VIH
VDD +0.3
VSS -0.3
V
VOL
V
VOH
VDD +0.3
120
V
Power Dissipation
PD
mW
°C
°C
Operating Temperature
Storage Temprature
TOPR
TSTG
-20 to +70
-55 to +125
Note: Exposure to conditions beyond those listed under Absolute Maximum Ratings may adversely affect the life and reliability
of the device.
- 12 -
W91473 SERIES
DC CHARACTERISTICS
(VDD- VSS = 2.5V, Fosc. = 3.58 MHz, Ta = 25° C, all outputs unloaded)
PARAMETER
Operating Voltage
Operating Current
SYMBOL
CONDITIONS
MIN.
TYP.
-
MAX.
5.5
UNIT
VDD
2.0
V
Tone
Pulse
-
-
0.3
0.15
0.5
IOP
mA
0.3
Standby Current
ISR
IMR
HKS = 0, No load & No
key entry
-
-
-
-
15
mA
mA
Memory Retention Current
0.2
HKS = 1, VDD = 1.0V
DTMF Output Voltage
Pre-emphasis
VTO
-
130
1
150
2
170
3
VrmS
dB
Row group, RL = 5 KW
Col/Row,
VDD = 2.0 to 5.5V
DTMF Distortion
THD
-
-30
-
-23
3.0
dB
V
RL= 5 KW,
VDD = 2.0 to 5.5V
DTMF Output DC Level
VTDC
1.0
RL = 5 KW,
VDD = 2.0 to 5.5V
DTMF Output Sink Current
DP Output Sink Current
ITL
IPL
VTO = 0.5V
VPO = 0.5V
0.2
0.5
-
-
-
-
mA
mA
T/P MTUE Output Sink
Current
IMI
VMO = 0.5V
0.5
0.5
-
-
-
-
mA
HPM MUTE Output Sink
Current
IHPMI
VTO = 0.5V
VTH = 2.0V
mA
mA
HPM MUTE Output drive
Current
IHPMH
RKH
0.5
-
-
-
-
300
KW
HKS I/P Pull-high Resistor
Key Tone Output Current
IKTH
IKTL
IHFH
IHFL
IKD
VKTH = 2.0V
VKTH = 0.5V
VHFH = 2.0V
VHFL = 0.5
VI = 0V
0.5
0.5
0.5
0.5
30
-
-
mA
-
-
-
-
-
HFO Drive/Sink Current
mA
-
Keypad Input Drive Current
Keypad Input Sink Current
Keypad Resistance
-
400
-
-
mA
mA
IKS
VI = 2.5V
200
-
-
5.0
KW
Publication Release Date: February 1995
Revision A3
- 13 -
W91473 SERIES
AC CHARACTERISTICS
PARAMETER
Keypad Active in Debounce
Key Release Debounce
SYMBOL
TKID
CONDITIONS
-
MIN. TYP. MAX. UNIT
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
20
20
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
mS
mS
TKRD
-
Pre-digit Pause1
mS
mS
mS
%
TPDP1
10 ppS
TPDP2
20 ppS
M/B = 2/3
M/B = 1/2
M/B = 2/3
M/B = 1/2
10 ppS
40
33.3
20
Pre-digit Pause2
16.7
800
500
40:60
33:67
93
Interdigit Pause (Auto dialing)
Make/Break Ratio
TIDP
20 ppS
M/B = 2/3
M/B = 1/2
Auto Dialing
Auto Dialing
M/B
Tone Output Duration
Intertone Pause
TTD
mS
mS
TITP
93
98
Flash Break Time
TFB
-
305
600
3.6
mS
Pause Time
TP
-
-
-
-
-
-
S
Key Tone Frequency
Key Tone Duration
One-key Redialing Pause Time
One-key Redialing Break Time
First key-in Pause Time
Notes:
FKT
600
35
Hz
mS
mS
S
TKTD
TPR
TRB
TFKP
600
2.2
600
mS
1. Crystal parameters suggested for proper operation are Rs < 100W, Lm = 96 mH, Cm = 0.02 pF, Cn = 5 pF, Cl = 18 pF,
FOSC. = 3.579545 MHz ±0.02%.
2. Crystal oscillator accuracy directly affects these times.
TIMING WAVEFORMS
- 14 -
W91473 SERIES
HKS
2
4
2
KEY IN
DP
TKID
TKID
M
B
TIDP
TPDP
TIDP
T
IDP
TPDP
T/P MUTE
HPM MUTE
KT
LOW
DTMF
TFKP
OSCILLATION
OSCILLATION
OSC.
Figure 1. Pulse Mode Diagram (Normal Dialing)
HKS
KEY IN
TKRD
TKRD
TKID
KID
T
T
ITP
DTMF
T
ITP
TTD
T
ITP
T/P MUTE
LOW
HPM MUTE
KT
LOW
HIGH
DP
TFKP
OSCILLATION
OSCILLATION
OSC.
Figure 2. Tone Mode Diagram (Normal Dialing)
Timing waveforms, continued
Publication Release Date: February 1995
Revision A3
- 15 -
W91473 SERIES
HKS
ON HOOK
OFF HOOK
HFI
H KEY
HFO
T/P MUTE
HIGH
HPM MUTE
LOW
CHIP ENBLE
Figure 3(a).
_____
Note: The H KEY cannot be enabled when chip is disabled.
OFF HOOK
HKS
HFI
H KEY
HFO
HIGH
T/P MUTE
HPM MUTE
CHIP ENBLE
Figure 3(b).
___
_____
___ _____
Note: The HFI and H KEY inputs will toggle the HFO signal; as soon as either HFI or H KEY is activated, the HFO signal will
go high and previous inputs will be ignored.
- 16 -
W91473 SERIES
Timing waveforms, continued
HKS
ON HOOK
HFI
H KEY
HFO
T/P MUTE
HIGH
HPM MUTE
CHIP ENBLE
Figure 3(c).
Note: Changing the state of the HKS signal from high to low will initialize the HFO and HPM MUTE signals.
LOW
HKS
R
KEY IN
DP
TKID
T
RB
T
IDP
TIDP
TPDP
T/P MUTE
HPM MUTE
KT
LOW
DTMF
T
FKP
OSCILLATION
OSC.
Figure 4. Pulse Mode One-key Redialing Timing Diagram (when not first key)
Publication Release Date: February 1995
Revision A3
- 17 -
W91473 SERIES
Timing waveforms, continued
HKS
4
2
2
R/P
KEY IN
DP
KID
T
M
B
B
M
IDP
T
TIDP
TIDP
TPDP
T
PDP
T/P MUTE
P
T
HPM MUTE
KT
LOW
DTMF
TFKP
OSCILLATION
OSC.
Figure 5. Pause Function Timing Diagram
HKS
KEY IN
DP
2
T
8
*/T
4
KID
T
B
M
B
M
T
IDP
IDP
TPDP
T/P MUTE
T
P
HPM MUTE
KT
T
IDP
DTMF
TFKP
OSCILLATION
OSC.
Figure 6. Pulse-to-Tone Function Timing Diagram
- 18 -
W91473 SERIES
Timing waveforms, continued
LOW
HKS
F
KEY IN
DP
T/P MUTE
HPM MUTE
FB
T
KT
DTMF
OSC.
LOW
FKP
T
OSC.
Figure 7. Flash Operation Timing Diagram
Publication Release Date: February 1995
Revision A3
- 19 -
W91473 SERIES
Winbond Electronics (H.K.) Ltd.
Winbond Electronics North America Corp.
Winbond Memory Lab.
Winbond Microelectronics Corp.
Winbond Systems Lab.
Headquarters
No. 4, Creation Rd. III,
Science-Based Industrial Park,
Hsinchu, Taiwan
TEL: 886-3-5770066
FAX: 886-3-5792697
http://www.winbond.com.tw/
Voice & Fax-on-demand: 886-2-7197006
Rm. 803, World Trade Square, Tower II,
123 Hoi Bun Rd., Kwun Tong,
Kowloon, Hong Kong
TEL: 852-27516023
FAX: 852-27552064
2730 Orchard Parkway, San Jose,
CA 95134, U.S.A.
TEL: 1-408-9436666
FAX: 1-408-9436668
Taipei Office
11F, No. 115, Sec. 3, Min-Sheng East Rd.,
Taipei, Taiwan
TEL: 886-2-7190505
FAX: 886-2-7197502
Note: All data and specifications are subject to change without notice.
Publication Release Date: February 1995
Revision A3
- 21 -
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