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BL1102series Tone/Pulse Dialer with Hand-free and lock functions Description
BL1102 Series is a single chip dialer IC using Si-gate CMOS process, it can provide signal for either Pulse or double Tone with multi-frequency dialing. It features key tone and hands-free dialing, "0,"9" dialing latch with first number, 2array 32-digit number memory re-dialing, and 13-array 16-digit number memory etc.
C1 C2 C3 C4 Vss XT XT T/P MUTE HKS DP/C5 DTMF 1 2 3 4 5 6 7 8 9 10 11 22 21 20 19 18 17 16 15 14 13 12 R5 R4 R3 R2 R1 V DD B/M NC MODE X MUTE KT C1 C2 C3 C4 Vss XT XT T/P MUTE HKS DP/C5 DTMF HFI 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 R5 R4 R3 R2 R1 V DD B/M NC MODE X MUTE KT HFO C1 C2 C3 C4 Vss XT XT T/P MUTE HKS DP/C5 DTMF 1 2 3 4 5 6 7 8 9 10 11 22 21 20 19 18 17 16 15 14 13 12 R5 R4 R3 R2 R1 VDD B/M LOCK MODE X MUTE KT C1 C2 C3 C4 Vss XT XT T/P MUTE HKS DP/C5 DTMF HFI 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 R5 R4 R3 R2 R1 V DD B/M LO MO XM KT HF
BL1102
BL1102A
BL1102L
BL1102AL
PDIP 22 PIN
PDIP 24 PIN
PDIP 22 PIN
PDIP24PIN
Features
* * * * * * * * * * * * * * * * * * * Operating voltage : 2.0 ~ 5.5V Double Tone/Pulse selection with switch, pulse can be switched to double tone by pressing */T key. 3.579545MHz crystal or ceramic resonator is used Power on reset on chip Minimum tone output duration : 100 ms 2 arrays of 32-digit number memory used for re-dialing and memory dialing respectively 3 arrays of 16-digit number single key dialing memory 10 arrays of 32-digit number double key dialing memory pulse break/make ratio can be 3/2 or 2/1, both alternative, and pulse speed is 10PPS Flash Time: 98ms, 305ms, 6000ms Minimum tone output width: 93ms, minimum tone interval:93ms Key tone output used for confirming the key pressed is right Pulse, Pu T (Pulse to Tone) can be stored as a digit in memory Easy operation with one-key redial, memory, pause and etc. Standard 5A 5 keyboard used Key "Mute" used for mute talking The dial-out staring with number "0" or "9"can be locked and chosen by pin. CD-operating key 20 and 24 PDIP plastic Package
Application
Used as dialing circuit in telephone, complete relevant functions.
Block Diagram
System clock generator
Handree control mode Lock select
Keyboard Input coding
Read/write counter
System control logic
RAM
Read/write control
Pulse control logic
Pulse generation
Data lock and store coder
Row/column programmable counter
D/A converter
DTMF generation
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Address
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No.810, YiShan Road ShangHai China Tel
86-021-64850700 Fax
86-64852222 Zip.200233
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BL1102series Tone/Pulse Dialer with Hand-free and lock functions
Known from the above block diagram, it mainly made up of system clock generator, keyboard interface, data code, random storing, read/write counter, address lock and storing, system control logic, pulse generator, data/mode converter and double tone generator and other circuits.
Pin Description
Symbol Row/colum n input X T,X T T/P MUTE MODE 22 Pin 1-4,1822 6,7 8 14 24 Pin 1-4,2024 6,7 8 16 I/0 O I I I/0 Function
A valid key entry is defined by a single row being connected to a single column
Oscillation I/O
The T/P MUTE is a conventional CMOS N-channel open drain output. When dialing and flash, the output is and will turn down the talking network.
Dialing mode selection.. When pin is connected to VSS , it is double tone multi-frequency mode when it is connected to VDD , it is pulse mode (10ppS). The pin is the hook switch input HKS =1, on HOOK state, chip in sleeping mode, no operation. HKS =0, on HOOK state operation.. enable chip on normal
HKS
9
9
I
B/M
16
18
I
Break/make ratio, pin selection. B/M=1, ratio is 60/40; B/M=0, ratio is 66/33.
VDD , VSS X MUTE
1 7, 5 13
19 , 5 15
I O
Power and power ground input Inverter output. Dialing under double tone mode, pin is high voltage if dialing under pulse mode, the pin is low voltage.
HFI, HFO KT
-12
12 14
13
I/O O I
Hands-free control table2.
details can be seen in
Key tone signal output. The frequency is1.2KHz. Once the pin is locked, dialing starting with "0" or "9" and all the key input afterwards will become invalid. It will recover the original state after on hook..
LO C K Pi n V DD fl i oat ng fV t i
SS
LOCK
15
(BL1102L)
17
(BL1102AL)
0I
funct on i al ng i t 9 di i l m i norm al 0 di i l m i al ng i t
NC
15
(BL1102)
17
(BL1102A)
I
Not available
Address
No.810, YiShan Road ShangHai China Tel
86-021-64850700 Fax
86-64852222 Zip.200233
BL1102series Tone/Pulse Dialer with Hand-free and lock functions
DP / C5 10 10 O
The DP/C5 is a conventional CMOS N-channel open drain output.
Under tone state. Output will keep high; Under pulse state, output dialing pulse. DTMF 11 11 O Double tone multifrequency signal output
Table1. Circuit Function
Type Pulse (PPS ) BL1102 BL1102A BL1102L BL1102AL 10 10 10 10 98 / 305 / 600 98 / 305 / 600 98 / 305 / 600 98 / 305 / 600 Pin Selection Y Y 24 Pin Selection N Y 22 Pin Selection Y N 24 Flash (ms ) Break/Make Ratio (B/M ) Pin Selection Handsfree N Lock Contro l N 22 Assembly ( PDIP )
Table 2
Current State Hook switch On hook
Next State HFO Low High input HFI HFI HFI Off hook on hook On hook Hands-free output ( HFO ) High Low Low Low Low High Y Y Y Y dialing
( HKS=1)
Off hook
( HKS=0) ( HKS=1) ( HKS=0) ( HKS=0)
High Low High
On hook off hook off hook
Function Description
Keyboard Operation
C 1 R1 R2 1 4 2 5 3 6 EM1 EM2 MUTE CD C2 C3 C4 DP/C5
MUTE: mute on/off P: pause CD: Call disconnect * /T: * & Pu T key A: auto-dialing
EM1-EM3: 16 digit emergency number store
Address
No.810, YiShan Road ShangHai China Tel
86-021-64850700 Fax
86-64852222 Zip.200233
BL1102series Tone/Pulse Dialer with Hand-free and lock functions
R3 R4 7 * / T R5 R D S A P F3
#: invalid under pulse state while refer to double tone multifrequency of the corresponding row and column
8 0
9 #
EM3 SAVE
F1 F2
RD: one-key redial S: double-key store
SAVE: 32 digit save memory F1, F2, F3: flash time 98/305/600ms
*
Genera l Dialing and HFI ) D1 , D2 ,... Dn D2 , ... Dn will be dialed out.
( or
a.. D1
b . Dialing length is unlimited, but the re-dial is inhibited if it oversteps 32 digits * Re-dialing
Off hook
a . on hook and re-dial
hook
, D1 , D2 ,... , Dn
, busy, then
On hook
,
Off hook
( or
On
and
HFI ) RD
On -hook
or (
Off -hook
and HFI ) ,
On-hook
D1
, D1
D2 , ... , , D2
On -hook
Dn
, busy, then Dn , busy,
HFI RD
RD
( or
and HFI ),
Off -hook
,...
b . direct re-dial on-hook RD
or (
and HFI ) , D1 , D2
, ... , Dn , busy ,
. If the dialing from D1 to Dn is finished, press RD
the pulse output pin will
become low voltage for 2 . 2 minutes , and automatically insert 6000ms for pause.. If press RD before finish dialing from D1 to Dn , there will be no pulse output.
*
"Pause" key operation
Off hook
(or
On-hook
and HFI )
D1 , D2 ,
P,
D3
...
Dn
a . pause function can be stored in memory storage. b . pause function can be performed when general dialing or re-dial or memory dialing. * D2' pulse - tone mode convert ( * / T )
Off-hook
( or
On -hook
and
HFI
)
D1
D2 ...
Dn
*/T
D1' ,
,..., D1
Dn' output signal will be D1', D2', ... ( tone ) Dn' D2 ... Dn pause(3.1 minutes)
a . If mode switch is set as pulse ( pulse )
b . If the mode switch is set as tone, output signal will be
Address No.810, YiShan Road ShangHai China Tel 86-021-64850700 Fax 86-64852222 Zip.200233
BL1102series Tone/Pulse Dialer with Hand-free and lock functions
D1 D2 ... Dn */T ( tone ) D1', D2',... ( tone ) Dn'
( tone ) on-hook operation. * FLASH
Off-hook
c . If the tone mode remains since the number is dialed out, pulse mode can be recovered as long as do
( or
On-hook
and
HFI ),
F
a . "flash" key can not be stored in the memory , but it enjoys the most high priority in all keyboard functions. b . after pressing " flash" key dialer will recover to the original status. * Number Storage
Off-hook
( or Ln , D2
On-hook
and
HFI ), D1 , D2
On-hook
,
... HFI )
Dn ,
S,
S
Mn b . D1 D2
or ...
(
On-hook
( or
and
a . Dialing out D1 c . Mn = M1~ M3
Off-hook
... Dn first, then press the storage key S * # pause key ),
On-hook
Dn numbers are stored in the position " Mn or Ln"and dialed out. Ln = 0 ~ 9 or Ln
On-hook
( S
P D1
) D2 ... , Dn S
and HFI , ( or
Mn or a . D1, D2 b.P and ...
,
On -hook
and HFI )
Dn are stored in Mn or L n but will not be dialed out. key can be stored in the memory as one digit P key indicates "pause".
*/T
c . Once the storage function is finished or the state of hook switch changes the storage mode will be released. Memory dialing a. b. * a. One-key dial Two-key dial
Off-hook Off-hook
( or ( or
On-hook On-hook
and HFI and
),
Mn A , Ln
HFI )
"Save" Key
Off-hook
( or
On-hook
and HFI D2 ,
)
D1 ,
D2 ..., SAVE
Dn
,
SAVE
If dialing from D1 to stored in the memory. b. *
On-hook
is over press SAVE , press
the numbers from D1 to Dn will be D1 to Dn will be dialed out.
then
Off-hook
SAVE then
CD
Address
No.810, YiShan Road ShangHai China Tel
86-021-64850700 Fax
86-64852222 Zip.200233
BL1102series Tone/Pulse Dialer with Hand-free and lock functions
Press CD one pulse output will make call disconnected and make the system recover to
the original status. * MUTE
Off-hook
MUTE
Press " MUTE", mute output will be generated. * Mixed dialing
Off-hook
( or +
On-hook
and
HFI ) + general dial + memory dial + memory dial
a . general dial b . memory dial c . re-dial
+
memory dial
general dial
+ general dial
Dialing with "Save"key is valid only being first pressed after off hook, and the second serial numbers can be dialed after the number is sent out. Absolute Maximum Rating
Parameter DC Supply Voltage input / output Voltage Symbol VDD ~ VS S VIL VIH VDL VDH Power-Dissipation Operating Temperature Storage Temperature PD TOPR TSTG Rating -0.3 ~ +7.0 VSS-0.3 VDD+0.3 VSS-0.3 VDD-0.3 120 -20 ~+70 -55 ~+150 Unit V V V V V mW
o o
C C
DC Characteristic ( VDD -VSS=2.5V
Parameter Operating voltage Operating current Memory retention current Standby current
Fosc=3.58MHz
Symbol VDD IOPT IOPP IMR ISB
Ta=25 OC, all output unloaded except for being indicated.)
Test Condition tone pulse memory tone pulse HKS1/2 1 , Ta=450OC VDD = 1.0V HKS1/2 0 N loaded and N -0.1 5 A Min. 2.0 2.0 1.0 ---Typical ---0.6 0.2 0.1 Max. 5.5 5.5 5.5 2.0 0.5 0.2 A mA V Unit
Address
No.810, YiShan Road ShangHai China Tel
86-021-64850700 Fax
86-64852222 Zip.200233
BL1102series Tone/Pulse Dialer with Hand-free and lock functions
input DTMF output voltage Pre-emphasis DTMF distortion tone output outer loading resistance tone output DC voltage tone output sink current pulse output drive current T/P mute output drive /sink current mute output drive / sink current XMT T/P mute drive/sink current voltage input low level voltage input high level key input drive/sink current Pin control input IMH I I I
ML
Vto
Row group RL=5K Column/row group VDD = 2.0 ~ 5.5V
130 1 -5 1.1 0.2 0.5 -0.5 0.5 -0.5 0.5 -0.5 0.5 GND 0.7VDD
150 2 -30 ------------30 400 --
170 3 -23 -2.8 --------0.3VDD VDD 80 -2.5
mVrms dB dB K V mA mA mA mA mA V A A
THd RL VDC ITC IPC
RL=5K TMD (-23dB) VDD = 2.5~5.5V VTO = 0.5V VPO = 0.5V VMO = 2.0V VMO = 0.5V VKO = 2.5V VKO = 0.5v VLO = 2.0V VLO = 0.5V
IKH
KL
ILH
LL
VIL VI H IKD I
KS
VI= 0V VI= 0V HKS MODE ,M/B
10 200 --
IIS
AC characteristic
Parameter Time of keyin debounce Time of key release debounce Time of key tone defer Time of One-key re-dial "pause" Time of pulse T/P mute defer Pre-digit pause pulse speed Time in data pace (autoAddress
Symbol TKID TKRD TKD TRB TMD TPDP FPR TTD
Test Condition
Min. -----
Typical 20 20 20 2.2 40 33.3 40 33.3 10 800
Max.
Unit ms ms ms s ms
----------
B/M=1 B/M=0 B/M=1 B/M=0
------
ms pps ms
No.810, YiShan Road ShangHai China Tel
86-021-64850700 Fax
86-64852222 Zip.200233
BL1102series Tone/Pulse Dialer with Hand-free and lock functions
dial) Break/make ratio B/M B/M=1 B/M=0 Tone width Inter tone pace TTD TTD Automatic dialing Automatic dialing -Time of flash pause TFB --Time of Pause Row -group frequency TP F1 F2 F3 F4 Column-group frequency F5 F6 F7 Key tone frequency Time of one-key re-dial pause NB: 1 . If it is operated on the following normal situation, the oscillation parameters are recommended as: Rs < 100, Lm: 96mH , Cm :0.02pF, FOSC : 3.57945 Mhz 0.02 % 2 . the accuracy of oscillator frequency will effect the above -mentioned times. Cn:5pF, C1:18pF Fkt TPR -row1 row2 row3 row4 column1 column2 column3 -98 305 600 3.1 699 766 848 948 1216 1332 1472 1.2 600 Hz -93 ---60:40 66.6:33.3 93
---------
%
ms ms
ms
s Hz
---
kHz ms
Timing Diagram
Pulse mode normal dialing timing diagram
Tone mode normal timing diagram
Address
No.810, YiShan Road ShangHai China Tel
86-021-64850700 Fax
86-64852222 Zip.200233
BL1102series Tone/Pulse Dialer with Hand-free and lock functions
HKS KEY IN TKID KT DP/C5 TPDP T/P MUTE DTMF X MUTE OSC. OSC MANUAL DIALING TMD LOW LOW OSC AUTO DIALING TIDP
T/P MUTE DP/C5 KT OSC. HKS
4
2 TKRD
RD
KEY IN TKID DTMF X MUTE TTD
TITP TITP
TKRD TKID
TKRD
TITP
TTD
TKD OSC. OSC.
tone mode re-dial timing diagram diagram
HKS KEY IN DTMF X MUTE T/P MUTE DP/C5 KT OSC ON HOOK OSC RD TKID TTD TITP TITP
HFI DP/C5 HFO T/P MUTE X MUTE HKS
hands-free control function timing
ON HOOK
OFF HOOK
LOW
Pulse mode timing diagram
HKS KEY IN DP/C5 T/P MUTE X MUTE DTMF OSC. LOW LOW OSCILLATION RD TRB TKID TRP TPDP TDP TIDP LOW
Pause function timing diagram
HKS KEY IN DP/C5 T/P MUTE DTMF X MUTE OSC. LOW LOW OSCILLATION TP 4 TKID BM TPDP T IDP 2 P 2 MB TIDP TIDP TIDP
General dial : pulse tone ( P T) transfer timing diagram timing diagram
flash function operation
Address
No.810, YiShan Road ShangHai China Tel
86-021-64850700 Fax
86-64852222 Zip.200233
BL1102series Tone/Pulse Dialer with Hand-free and lock functions
HKS 4 KEY IN DP/C5 T/P MUTE X MUTE DTMF OSC. OSCILLATION LOW TKID BM PDP TIDP MB TIDP TP TITP
DP/C5 T/P MUTE X MUTE DTMF OSC. OSCILLATION LOW LOW HKS LOW F TKID TFB
2
*/T
2
KEY IN
"Mute"key function operation timing diagram
HKS MT KEY IN HFI DP/C5 HFO T/P MUTE X MUTR KT CHIP ENABLE (MT=MUTE) CD MT CD MT
Application Circuit
Address
No.810, YiShan Road ShangHai China Tel
86-021-64850700 Fax
86-64852222 Zip.200233

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