Samsung KS58006N Datasheet
KS58006 TONE/PULSE DIALER WITH REDIAL
ORDERING INFORMATION
INTRODUCTION
The KS58006 is DTMF/PULSE switchable dialer with a 32-digit redial which
can be done using a slide switch. All necessary dual-tone frequencies are
derived from a 3.579545 MHz TV crystal or ceramic resonator providing very
high accuracy and stability. The required sinusoidal wave form for each individual tone is digitally synthesized on the chip. The generated wave form
has very low total harmonic distortion (7% max). A voltage reference is
generated on the chip which is stable over the operating voltage and temperature range and regulates the single levels of the dual tone to meet telephone
industry specifications. CMOS technology is applied to this device, for very
low power requirements high noise immunity, and easy interface to a variety
of telephones requiring external components.
FEATURES
• Tone/Pulse switchable (slide switch)
• 32-digit capacity for redial
• Automatic mix redialing ( last number dial ) of
PULSE → DTMF with multiple auto access pause
• PABX auto-pause for 3.5 sec.
• 4 X 4 or ( 2 of 8 ) keyboard available
• Two key single tone operation
• Operating Voltage : 2.0 ~ 5.5V
• Numbers dialed manually after redial are cascadable
and stored as additional numbers for next redialing
• Uses inexpensive TV crystal or ceramic resonator
(3.579545MHz)
• Make/Break ratio (33.3 / 66.6) pin selectable
• Touch key hooking (604ms)
• Low standby current
• Improved EMI characteristic
• Improved redial memory quality
Device Package Operating Temperature
KS58006N 18-DIP-300A
18-DIP-300A
- 20°C ~ + 70°C
PIN CONFIGURATION
R1
1
2
R2
R3
3
4
R4
KA58006
HS
5
6
M/B
MDS
7
8
OSC IN
9 10
OSC OUT
Fig. 1
18
17
16
15
14
13
12
11
C4
C3
C2
C1
DP
X’
MUTE
TONE OUT
V
SS
V
DD
KS58006 TONE/PULSE DIALER WITH REDIAL
BLOCK DIAGRAM
HS M/B MDS OPERATION
R1
R2
R3
R4
C1
C2
C3
C4
KEYBOARD
LOGIC
OSC IN OSC OUT
OSC
REDIAL
MEMORY
32 DIGIT
INPUT LOGIC
CONTROL
LOGIC
V
SS
Fig. 2
ARRANGEMENT OF KEYBOARD TONE FREQUENCIES
1 2 3
4 5 6 HK
7 8 9 P
* 0 # RD
C1 C2 C3 C4
* KEYBOARD DESCRIPTION
R1
R2
R3
R4
Input Specified Actual % Error
R1 697 699.1 + 0.31
R2 770 766.2 - 0.49
R3 852 847.4 - 0.54
R4 941 948.0 + 0.74
C1 1209 1215.7 + 0.57
C2 1336 1331.7 - 0.32
C3 1477 1471.9 - 0.35
OUPUT
LOGIC
DTMF
GENERATOR
MDO
KIT
X’
MUTE
MUTE
DP
V
DD
TONE OUT
HK
: HOOKING (604ms)
P
: PAUSE (3.5 second)
RD
: REDIAL
KS58006 TONE/PULSE DIALER WITH REDIAL
MODE
ENTRY MODE
PIN DESCRIPTION
Pin No Symbol Description
Keyboard (R1, R2, R3, R4, C1, C2, C3, C4)
These inputs can be interfaced to an XY matrix keyboard.
C1-C4 & R1-R4 are set to low at On Hook (HS = high). C1-C4 key inputs are set
1- 4
15 -18
5
6 M/B
7 MDS
R1 - R4
C1 - C4
HS
to low and R1-R4 are set to high at OFF HOOK (HS = low) which enables the keyinput operation. The oscillator starts running when a keypress is detected. Scanning
signals are presented at both column and row inputs (TYP : 437Hz) until the
input key is released. Key inputs are compatible with standard 2-of-8 form or
single-contact keyboard. Debouncing is provided to avoid false entry (TYP : 4mS).
Hook Switch
This input detects the state of the hook switch contack. “Off Hook”
corresponds to VSS condition. “On Hook” corresponds to VDD condition.
Make/Break Ratio
This input provides the selection of the Make/Break ratio (33.3: 66.6/40:60)
when M/B is connected to VDD/VSS.
Mode Select Input
Pulse/DTMF mode is selected as shown is the following table.
Initial Mode means the state after going Off Hook (HS → ”VSS”)
MDS
INITAL
SWITCHING
8 - 9
OSC IN
OSC OUT
10 - 11 VDD, V
12 TONE OUT
13 X’MUTE
14 DP
V
DD
V
SS
Pulse
Tone N/A
Oscillator Input/Output
These pins are provided to connect an external 3.58MHz crystal. Oscillator
starts (at Off Hook) and is sustained unitl pulse or DTMF signals are finished.
Power
These are the power supply inputs. The device is designed to be operated on
SS
2.0V to 5.5V
DTMF Signal Output
When a valid keypress is detected in DTMF mode, appropriate low and high
group frequencies are generated which hybrid the Dual Tone Output.
Tone out is Off State in pulse mode.
X’MUTE Output
HS X’MUTE Output
V
V
DD
SS
“ON” during pulse and DTMF dialing
“ON”
Normally “OFF”
(N channel open drain)
Dial Pulse Out
DP : The normal output will be “ON” during break and “OFF” during make at
“OFF HOOK”. The output will be “OFF” at “ON HOOK”.
MDS
Input = V
SS
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