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Silan Semiconductors
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY
DESCRIPTION
SC91415 SERIES
The SC91415 is a series of tone/pulse switchable dialers that is composed of T/P dialer and T/P dialer with 13 set memories. The SC91415 series provide necessary functions of telephone set for application in any environment, such as Pulse dialing, Tone (DTMF) dialing, Handfree dialing, keying tone and lock functions. The lock function is designed to inhibit toll dialing operation. Beside this, melody generator, ring detector and SDO (Serial Data Output) functions are provided in advance version. Melody generator will output dual-tone music in line hold duration. Ring detector can prevent illegal dialing from pocket dialer. The SDO is designed to drive LCD driver and voice synthesizer.
DIP-18
DIP-22
FEATURES
*Tone/Pulse switchable *Wide operating voltage from 2.0 V to 5.5 V *Low operating current, 0.15mA (Pulse) and 0.3mA (Tone) typically *Adding resistor on keyboard scan pin that can select many telephone specifications, such as: Pulse rate, M/B ratio, Flash time, lock dialing functions. *Lock function provides conventionality key lock and password lock operations *Ring detector is designed to prevent illegal dialing from pocket dialer *13 set one touch or (3 set one touch and 10 set two touch) repertory memory, each one can hold data up to 16 digits *A 32-digit LNB (last number) redial memory *Handfree function provides on-hook dialing and speakerphone application *Pause and P-T time are fixed to 3.6 seconds *Tone duration and inter-tone pause time are fixed to 98 ms *Using 3.579545 MHz crystal or ceramic resonator *SDO function supports LCD driver and voice synthesizer to indicate dialing numbers. *Line hold function is designed for stopping conversation temporality *Melody generator provides music on hold function *Keytone function provides rapidly keying recognition
ORDERING INFORMATION
SC91415AP SC91415BP SC91415CK SC91415DK DIP-18 Package DIP-20 Package DIP-22 Package DIP-24 Package
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PIN CONFIGURATIONS
SC91415 SERIES
COL5 1 2 3 4 5 6 7 8 9 10 SC91415BP 20 HDO 19 PO 18 ROW4 17 ROW3 16 ROW2 15 ROW1 14 HKS 13 VDD 12 DTMF 11 HFO 18 HDO 17 PO 16 ROW4 COL4/KT COL3 COL2 COL1 XIN XOUT XMUTE VSS HFI
COL5 COL4/KT COL3 COL2 COL1 XIN XOUT XMUTE VSS
1 2 3 4 5 6 7 8 9 SC91415AP
15 ROW3 14 ROW2 13 ROW1 12 HKS 11 VDD 10 DTMF
ROW6 1 COL5 2 COL4/KT 3 COL3 4 SC91415DK COL2 5 COL1 6 XIN 7 XOUT 8 XMUTE 9 VSS 10 HFI 11 DRING 12
24
ROW5/ SDO
ROW6 COL5 COL4/KT
1 2 3 4 5 6 7 8 9 SC91415CK
22
23 HDO 22 PO 21 ROW4 20 ROW3 19 18 17 16 15 14 13 ROW2 ROW1 HKS XOUT VDD XMUTE DTMF VSS 10 HFO HFI 11 RMUTE COL1 XIN COL3 COL2
ROW5/ SDO
21 HDO 20 PO 19 ROW4 18 ROW3 17 ROW2 16 ROW1 15 HKS 14 VDD 13 DTMF 12 HFO
VERSIONS LIST AND FUNCTION OUTLINE
Version SC91415A SC91415B SC91415C SC91415D LNB KT HOLD(music) LOCK HF SDO(LCD) PDP
Note: PDP = Pocket Dialer Prevented
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BLOCK DIAGRAM
SC91415 SERIES
SDO HFO HDO RMUTE XMUTE
COL1 COL2 COL3 COL4 /KT COL5 XIN Oscillator XOUT Keyboard interface Input circuit ROW6 (Row) Timing/Control circuit Pulse generator PO Keyboard interface (column) Memory (Melody) latch & decoder D/A converter DTMF Output circuit Row/Column programming counter
ROW1
VDD HFS HKS
DRING
VDD
KEYBOARD ASSIGNMENT
COL1 ROW1 ROW2 ROW3 ROW4 ROW5/SDO ROW6 1 4 7 */T M1 M6 COL2 2 5 8 0 M2 M7 COL3 3 6 9 # M3 M8 COL4/KT HD F A RD/P M4 M9 COL5 EM1 EM2 EM3 ST M5 M10
Note: ROW5/SDO: Option by COL5, When ROW5 is selected by R option (COL5), there are 13 sets one touch memory version in SC91415C/D provided.
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DIALING SIGNAL OPTION
SC91415 SERIES
The SC91415 series incorporated a special keyboard scanning function that is connecting a resistor (typically is 560 k) on keyboard scan pin to select many telephone specifications. The specifications are described as following : a. Mode ROW1 R-VDD NR R-Vss c. Flash Time ROW3 NR NR R-Vss R-Vss e. Lock number COL2 NR NR R-Vss R-Vss COL3 NR R-Vss NR R-Vss Lock number None 0 9 0.9 ROW4 NR R-Vss NR R-Vss Tf (ms) 600 100 80 300 f. ROW5/SDO pin functions COL5 NR R-Vss ROW5 or SDO Pin SDO ROW5 Mode 20PPS Tone 10PPS d. Lock control method COL1 R-VDD NR R-Vss Control method Key lock None lock Password lock b. M/B ratio ROW2 NR R-Vss MBR (%) 40:60 33:66
(Note): If select SDO function, the memory type is (1T*3+2T*10) If select ROW function, the memory type is (1T*3+2T*10) and (1T*13)
ABSOLUTE MAXIMUM RATINGS
(Tamb=25C, All voltage referenced to VSS, unless otherwise specified)
Characteristic
Power Supply Voltage Input Voltage Power Dissipation Operating Temperature Storage Temperature
Symbol
VDD VIN PD Topr Tstg
Value
6.0 VSS-0.3~VDD+0.3 500 0~+50 -55~+125
Unit
V V mW C C
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ELECTRICAL CHARACTERISTICS
SC91415 SERIES
Test Conditions
Tone Pulse Pulse Tone Pulse Tone ON-HOOK OFF-HOOK ON-HOOK unload Unload with pull up/down resistor *8 Unload with pull up/down --VSS 0.8VDD 0.2 ---0.1 0.001 1.0 0.1 0.2VDD VDD -0.001 A A V mA A
(Tamb=25C, VDD=2.5V, fosc=3.579545MHz, All voltage referenced to VSS, unless otherwise specified)
Parameter
Operating Voltage
Symbol
VDD
Min
2.0 2.0 -----
Typ
--0.15 0.3 0.15 0.3
Max
5.5 5.5 0.3 0.5 0.3 0.5
Unit
V
Operating Current ( HKS =0)
IDD
mA
Standby Current
Istby
OFF-HOOK resistor *8 Memory Retention Current
HKS , HFI & DRING pins:
Imrt Vil Vih Ioh Ioh
ON-HOO K VDD=1.0V --Vo=2.0V Vo= VDD
Input Voltage HFO & HDO Pins Source Current
PO , XMUTE , RMUTE & SDO
Pins Leakage Current
PO ,HFO, XMUTE , RMUTE
&
SDO Pins Sink Current
Iol
Vo=0.5V
-0.2 --2 2 0.2 0.2 -------
-100 200 10 10 --20 600 30 3.6 3.6 600 100 80
---50 50 ---------
mA k k A mA ms Hz ms Sec. Sec.
DRING pin input resistance
HFI Pin Input Resistance
Rdring Vdring = VSS Rhfi Ioh Iol Ioh Iol Tdb fkt Tkt Tp Tpt Vhfi = VSS Vksn=VSS Vksn=VDD Vo=2.0V Vo=0.5V -----Row3B, Row4B=NR,NR Row3B, Row4B=NR,R-Vss Row3B, Row4B=R-Vss,NR Row3B, Row4B=R-Vss,R-Vss
Keyboard Scanning Pins Output Current(except COL4/KT) COL4/KT Source Current Sink Current Keyboard debounce time Key Tone Signal Pause Time Pulse to Tone Waiting Time Frequency Duration
Flash Time
Tf
ms -(to be continued)
--
300
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(continued)
SC91415 SERIES
Test Conditions
Row1=R-VDD Row1=R-VSS Row2=NR Row2=R-VSS PSR=10pps PSR=20pps Vdtmf=0.5V VDD=2.0V~5.5V Row group Column - Row RL=5k THD<-23db -Memory dialing VDD=2.0V~5.5V VDD=2.0V~5.5V
Parameter
Pulse Rate Make/Break Ratio Inter-digit Pause Time DTMF pin: Sink Current DTMF signal DC level AC Level DTMF signal Pre-emphase Distortion Load Resistance Minimum tone duration Time Minimum Intertone Pause Time Melody Output Signal Sub-tone Main Tone AC Level
Symbol
PSR MBR Tidp IoL Vdc Vdtmf Twist THD ZL Tp tITP Vmtac Vstac
Min
-------0.2 0.5 142 1 -5 96 96 -48 -37 -3.8 --
Typ
20 10 40:60 33:66 800 500 --160 2 -30 -98 98 -23.3 53 -25.3 42 280 3.9 300
Max
-------0.75 180 3 -23 -100 100 -58 -47 -4.1 --
Unit
pps
% ms
mA V mV dB dB k ms ms (dBm) mV (dBm) mV ms ms ms
HD key release hold function debounce time SDO every bit time Off-Hook delay time
Thdrdb -Tbit Tdly ---
DTMF FREQUENCY OUTPUT (fosc=3.579545MHz)
Keyboard Scanning Pin
ROW1 (f1) ROW2 (f2) ROW3 (f3) ROW4 (f4) COL1 (f5) COL2 (f6) COL3 (f7)
CCITT Standard(Hz)
697 770 852 941 1209 1336 1477
Actual Output
699.1 766.2 847.4 947.9 1215.8 1331.6 1471.8
Deviation(%)
+0.30 -0.49 -0.53 +0.73 +0.56 -0.32 -0.35
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PIN DESCRIPTION
AP
13 14 15 16 --5 4 3 1
SC91415 SERIES
Description
Keyboard scan pins of row group. In idle state ( HKS is "High" and HFO is "Low"), these pins stay "High impedance" level to prevent power consumption. Otherwise, these pins switch to "High" level for detecting keyboard entry. These pins will output 600Hz signal while keyboard is scanning. Keyboard scan pins of column group. In idle state, these pins stay "High impedance" level. Otherwise these pins switch to "Low" level for detecting keyboard entry. These pins will output 600Hz signal while keyboard is scanning. The fourth column group pin of the keyboard that also provides the keytone output. Normally, this pin stays "Low" level for detecting keyboard entry. After a valid keyboard entry, this pin will output keying confirmation tone that is 600 Hz signal and 30 ms duration. To prevent signal interference, while DTMF issue, it will disable key tone output except function key. Oscillator input and output pins. A 3.579545MHz crystal or ceramic resonator must be crossed connection to XIN and XOUT pins which generate system clock. The Tone/Pulse MUTE signal output pin that is NMOS open-drain output structure. This pin will switch to "Low" level during Tone/Pulse dialing and hold function. Otherwise, this pin stays "High impedance" level. Positive and negative power supply input pins. Recommended operating voltage from 2.0Vdc to 5.5Vdc. Handfree inputs pin which accepts falling edge signal to turn "on" or turn "off" handfree function. This pin is hysteresis input structure and built-in pull up resistor (typically 200k). Handfree outputs pin that is designed to control telephone line for on-hook dialing or control speakerphone circuit for handfree conversation. When handfree function is executed, this pin will switch to"High". Otherwise, this pin stays "Low" level. The DTMF (Dual Tone Multi-Frequency) and music signals output pin. Normally, this pin stays "Low" level. In Tone dialing mode, this pin will
Pin No. BP CK
15 16 17 18 --5 4 3 1 16 17 18 19 22 1 6 5 4 2
DK
18 19 20 21 24 1 6 5 4 2
Pin Name
ROW1 ROW2 ROW3 ROW4 ROW5 ROW6 COL1 COL2 COL3 COL5
2
2
3
3
COL4/KT
6 7
6 7
7 8
7 8
XIN XOUT
8
8
9
9
XMUTE
VDD VSS
11 9 --
13 9 10
14 10 11
16 10 11
HFI
--
11
12
14
HFO
10
12
13
15
DTMF
output DTMF signal that is corresponding to keyboard 0 . 9, * and # keys. Beside this, in the line hold duration, this pin will issue dual-tone music for telephone line. (to be continued)
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(continued)
SC91415 SERIES
Description
Control signal inputs pin that is corresponding hook switch status. When handset was left from cradle, this pin must be connected to
Pin No. AP BP CK DK
Pin Name
12
14
15
17
HKS
"Low" level to operate all functions. Otherwise, this pin must be connected to "High" level to disable all function and prevent power consumption. Pulse signal outputs pin that is NMOS open-drain output structure. Normally, this pin stays "High impedance" level. In Pulse dialing mode and keypad was entry. This pin will output pulse trains signal that is corresponding to keyboard 0 .. 9 keys. Hold function output that is CMOS structure. Normally, this pin stays "Low" level. When Hold function is executing, this pin will output "High" level. This pin is designed to drive LED or peripheral circuit to indicate line is at Hold status. SDO function output that is NMOS open-drain structure. When there is a valid entry on keyboard, this pin will output a serial data. This
17
19
20
22
PO
18
20
21
23
HDO
--
--
22
24
SDO
serial data is designed to drive LCD driver to display dialing number on LCD screen or drive voice synthesizer to announce dialing number to speaker. The ring signal detect input pin which is internal pull up (built-in 100 k resistor). While the Tel-ring is incoming, this pin must be connected to "Low" with delay to indicate the ringing . Otherwise, this pin must be connected to "High" level . Ring mute output pin that is NMOS open-drain structure. The
--
--
--
12
DRING
RMUTE pin is designed to control microphone of handset to
prevent the illegal dialing from pocket dialer. If the DRING pin is at "High" level , then Off-Hook or turn on Handfree, this pin will output "Low" level. In other words, the DRING pin is used to check the ---13
RMUTE
phone that receives an incoming call ( DRING =Low input) or make an outgoing call ( DRING = High input) . If the phone user make an outgoing call ,then RMUTE pin activated to prevent the illegal dialing from pocket dialer in the particular application. The RMUTE can be restored to "High" level when the first key entry is not the optioned lock-number .
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FUNCTION DESCRIPTIONS
A Normal Dialing
SC91415 SERIES
Directly keying digital key on keyboard which number can be dialing output and stored in LNB memory automatically. Operating procedure described as follow : * To select Pulse or Tone mode. * Off-hook or turn on HF function. * Keying d1, d2, .. , dn. The "d" expressed digital keypad that included 1~9, *, 0, #, P, and PT keys. The "n" expressed unlimited. * The numbers d1, d2, .. , dn will be dialed out in Pulse or Tone mode as selection.
B LNB redial memory
Storing: In normal dialing mode, every digital key was entry which number will be stored in LNB memory automatically. If entry digits are more than 32 digits, the redial function of LNB memory will be disabled. Otherwise, these numbers stored in LNB memory can be redial output. Redialing: After normal dialing, directly keying F key (or On-Off hook once) and keying RD key on keyboard. The numbers that are stored into LNB memory will be dialed output.
C Repertory memory
The SC91415 series incorporated several sets repertory memory and each one can store number up to 16 digits. In memory storing, if stored numbers are more than 16 digits that only the previous 16 digits can be stored into specific memory. Otherwise, these numbers can be stored entirely. After memory dialed out, the content of LNB is keeping to current data. Storing of 13 sets memory types Direct (one-touch) operation Off-hook (or turn on HF function), push (ST, d1, d2, .. , dn [ST], EMn or M1~M10 (ROW5 optioned). The numbers d1, d2, .. , dn will be stored into memory location "EMn" or Mn. The "EMn" expressed emergency memory EM1 to EM3. The Mn expressed memory M1~M10. Indirect (two-touch) memory operation Off-hook (or turn on HF function), push (ST, d1, d2, .. , dn, ST, n.) The numbers d1, d2, .. , dn will be stored into memory location "n". The "n" expressed digital key from 0 to 9.
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SC91415 SERIES
Dialing (after memory dialed out, the content of LNB is keeping to current data) Direct (one-touch) memory operation * To select Pulse or Tone mode. * Off-hook (or Turn on HF function), push Mn (or EMn) key. The numbers that are stored in direct memory location "Mn (or EMn)" will be dialed out in Pulse or Tone mode as selection. The "n" expressed digital number from 1~10 decided by dialers' memory sets. Indirect (two-touch) memory operation * To select Pulse or Tone mode. * Off-hook (or Turn on HF function), push A, n key. The numbers that are stored in indirect memory location "n" will be dialed out in Pulse or Tone mode as selection. The "n" expressed digital key from 0 to 9.
Pause (P) Key operation The Pause (P) key is designed to support pause operation in dialing duration. "P" key can be stored in memory and it will occupy one digital position. * To select Pulse or Tone mode. * Off-hook (or turn on HF function), push (d1, d2, .. , dn, RD/P, k1, k2, .. , kn.) These numbers will be dialed out as following sequence: d1, d2, .. , dn, Tp, k1, k2, .. , kn
Pulse to Tone (*/T) key operation The Pulse to Tone (*/T) key is designed to support toll dialing (long distance call) or PABX system operation. The "*/T" key can be stored in memory and it will occupy one digital position. * To select Pulse mode. * Off-hook (or turn on HF function), push d1, d2, .. , dn, */T, k1, k2, .. , kn. These numbers will be dialed out as following sequence: d1, d2, .. , dn, Tpt, k1, k2, .. , kn. (pulse mode) (tone mode)
Flash (F) key operation The Flash (F) key is designed to break telephone line temporarily. After F key is depressed, this dialer will send a flash signal to break line 600 ms, 300 ms, 100 ms or 80 ms as ROW3 and ROW4 selection.
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D) Handfree (HF) function
SC91415 SERIES
The handfree function is designed to support on-hook dialing and loudspeaker application which can be turn "on" or "off" with falling edge signal from HFI pin. During handfree function is executed, the HFO pin is switched to "high". Otherwise the HFO pin stays "low" level. One of the following operations can turn off Handfree function (HFO pin return to "Low"). * On-off hook once. * Trigger HFI pin with falling edge signal. * Turn on Hold (HD) function. (HDO pin switched to "High")
E) Hold (HD) function
The Hold function is designed to stop conversation temporarily. In off-hook state (or HF function is turned on), to press HD key on the keyboard, the Hold function can be turned "on" (HDO pin switched to "High"). One of the following operations can turn off Hold function (HDO pin switched to "Low"). * On-off hook once. * To press HD key over 280 ms. * Turn on Handfree (HF) function. (HFO pin switched to "High") Special Note A 300 ms delay time (Tdly) at the first Off-Hook or turn on Handfree that is a special designed to avoid a rapid key entry (dummy number ) in this time duration ,and a long distance call number follows. For example, Off-Hook , "3" ,.................... , "0" ,1,2,3...... Dummy key Lock number key
The dummy number "3" is not detected by the centered office or PABX ,but the following numbers "0" ,1,2,3... long distance call can be dialed out normally since the leading number "3" is not the Lock-number defined in SC91415 series. To prevent the unavoidable long distance call, then SC91415 inhibits the key entry during Tdly.
F) Operating flow chart
4 On-hook Handfree State
HF HF
1 On-hook State
HKS=Lo HKS=Hi
HKS=Lo
2 Off-hook State
Note :
HKS=Hi 3 Off-hook Handfree State HF HD HKS=Hi HKS=Lo HF HF HD 5 Off-hook Holdline State
HF= Handfree,
HD
HD
HF
HD = Hold
HD
6 On-hook Holdline State
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Truth table Operating State (0) on-hook, idle state (1) Off-hook line (2) Off-hook, HF line (3) On-hook, HF line (4) Off-hook, HD line (5) On-hook, HD line
SC91415 SERIES
Input / Output pin level
HKS
PO
XMUTE
HFO L L H H L L
HDO L L L L H H
H L L H L H
F F F F F F
F F F F L L
Note : F = floating (high impedance); H = logic "High"; L = logic "Low" level.
G) Music on Hold
SC91415 series built-in a melody generator to generate dual-tone music on DTMF output pin. The music is designed for telephone line at line holding.
H) SDO (Serial Data Output) function
The SDO is serial data output which format is same as UART protocol. SDO function is designed to drive LCD driver and voice synthesizer. So the dialing numbers can be display on LCD screen with SC32100 (or SC32116). The SDO signal consists of two start bits, six data bits and two stop bits. Each bit time is about 3.9 ms (256 Hz) and output sequences are following by start bits, data bits (LSB to MSB) and stop bits.
0
1
bit0
bit1
bit2
bit3
bit4
bit5
0
1
ready
start bits
data bits
stop bits
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SDO Keypad Encoded table * Digital key (b5,b4=0,0) Keypad 1 2 3 4 5 6 7 8 9 0 "*"/T # P */"T" Output b3 0 0 0 0 0 0 0 1 1 1 1 1 1 1 b2 0 0 0 1 1 1 1 0 0 0 0 1 1 1
SC91415 SERIES
Display 1 2 3 4 5 6 7 8 9 0 P
b1 0 1 1 0 0 1 1 0 0 1 1 0 0 1
b0 1 0 1 0 1 0 1 0 1 0 1 0 1 0
* Function key (b5,b4=1,0) Keypad F Output b3 1 b2 1 b1 1 b0 1 Display Clear all display
* Keypad ,SDO format and LCD display reference table: Keypad 1 2 3 4 5 6 7 8 9 0 "*"/T # P */"T" F Bit5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 Bit4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Bit3 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 Bit2 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 Bit1 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 Bit0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 Display 1 2 3 4 5 6 7 8 9 0 P Clear all display
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I) LOCK function
SC91415 SERIES
The SC91415 series provide the LOCK function to inhibit toll dialing operation. Connecting a resistor on COL1 pin to VSS can select different LOCK control method that is conventional key lock or password lock. Also the lock number that can be selected by connecting the resistors on COL2 or COL3 pin. After power on reset, the password is fixed to 000 automatically. The lock function is disabled when the password is equal to 000.
How to setup password * Set LOCK function to password control mode. (Connects a resistor on COL1 pin to VSS) * Off hook (or turn on HF function) * Push: # , # , ops1, ops2, ops3, nps1, nps2, nps3, # . If the ops1~ops3 are the same with current password, then nps1~np3 will be stored in the dialer to replace current password. Otherwise, the current password can not be updated. All the numbers pressed in the password setup procedure can not be dialed out when current password is not equal to 000. If the current password are equal to 000, then only the first number "#" will be dialed out. Normal dialing Set lock function to none lock mode (without resistor connected to COL1 pin) or set password equal to 000. In this case, the dialer is operated in normal mode and all functions work at unlimitation. Dialing via LOCK function Conventional key lock mode. (Connects a resistor on COL1 pin to VDD) * Off hook (or turn on HF function) * Keying: d1, d2, .. , dn . If the first number (d1) is the same with the lock number that optioned in table, then all entry numbers can not be dialed out and keyboard will be inhibited until on to off hook once again. If the first number is not equal to lock number, all the entry numbers will be dialed out. Password control mode. (Connects a resistor on COL1 pin to VSS) * Off hook (or turn on HF function) * Keying: ( [#, ps1, ps2, ps3] + telephone number.) The numbers in the [ ] symbol could be omitted. The number "#" will be inhibited when the current password is not equal to 000,and ps1, ps2, ps3 work at the checking state, not to be dialed out. Other descriptions are as on following: Incorrect password entry. The telephone numbers can not be dialed out. Password is omitted. If the first digit of telephone numbers is the same with the lock number, all of the telephone numbers can not be dialed out and keyboard will be inhibited until On to Off hook once again. If the first digit is not equal to the lock number then the telephone numbers will be dialed out entirely. Correct password entry. The telephone numbers can be dial out no matter what lock number is.
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J) Ring detector
SC91415 SERIES
The Ring detector is designed to prevent illegal dialing from pocket dialer. Following the procedures ( i,ii,iii ), this dialer will detect DRING pin to control RMUTE output level. If DRING is detected a "Low" level, the
RMUTE stays "High impedance". If DRING is detected a "High" level, the RMUTE will output "Low" until
keyboard entry. In actual application of the RMUTE pin is recommended connection to microphone of the phone handset to prevent that the dialing signal (DTMF) is coupling by the Microphone of the phone handset. (such as pocket dialer) i. In idle state, HKS is from "High" to "Low" (pick up handset action). ii. In idle state, turn on handfree function. iii. The flash operation ( F key ).
TIMING DIAGRAMS
HKS
2 3
KEY IN KT
Tdb Tkt
XMUTE HDO SDO PO DTMF OSC. Tdly Hi-impedance Tidp TbTm Tb Tm Tidp Tm
Pulse mode operating timing
HKS KEY IN KT XMUTE HDO SDO PO DTMF OSC. Hi-impedance Td Titp Titp 2 Tdb 3
DTMF mode operating timing
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TIMING DIAGRAMS (continued)
LNB=2,3 HKS KEY IN KT Tkt XMUTE HDO SDO PO DTMF OSC. Tdly Tidp Tm RD/P Tdb
SC91415 SERIES
Tidp Tb Tm Tb Tm
Hi-impedance
Pulse mode LNB redial timing
LNB=2,3 HKS KEY IN KT Tkt XMUTE HDO SDO PO DTMF OSC. Tdly Hi-impedance Td Titp Td Titp RD/P Tdb
DTMF mode LNB redial timing
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2.0 2001-11-13
16
Silan Semiconductors
TIMING DIAGRAMS (continued)
HKS KEY IN KT XMUTE Tp HDO SDO PO Tidp DTMF OSC. 2 RD/P 3
SC91415 SERIES
Tidp
Hi-impedance
Pause key operating timing
HKS KEY IN KT XMUTE HDO SDO PO DTMF OSC. Hi-impedance Tpt 2 */T 3
Pulse to Tone (PT) operating timing
HKS KEY IN Tdb KT XMUTE HDO SDO PO Tf DTMF OSC. Hi-impedance Tfp=300ms 2
Flash key operating timing
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2.0 2001-11-13
17
Silan Semiconductors
TIMING DIAGRAMS (continued)
HKS KEY IN Tdb KT SDO 2
SC91415 SERIES
sT sT b0 b1 b2 b3 b4 b5 spt spt Tbit 0101000001 L M Hi-impedance
Note: L=LSB, M=MSB, sT=START bit time, spT=STOP bit time
SDO operating timing
HKS KEY IN HFO HDO XMUTE SDO PO MELODY Hi-impedance
@ :It can be triggled by extension telephone set for hold function release
HF
HD
HF
HD
HD
HD
HF
HD
HD@ Thdrdb 280ms
HF and HD operating timing
HF
HFI HKS KEY KT
5
0
Tdly OSC. "0" digit dialing time Hi-impedance
Off-Hook delay time
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2.0 2001-11-13
18
Silan Semiconductors
TIMING DIAGRAMS (continued)
Toff RING Ton DRING HKS RMUTE
SC91415 SERIES
Timing of receiving an incoming call
RING DRING HKS RMUTE
Timing of making an outgoing call
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2.0 2001-11-13
19
SC91415 SERIES
10M
HANDSET SW1B
1N4148 0.1F 100k 1N4148 220k 470k 0.1F C945 100k 2.7k 220F 1.5k HFO JUMPER HDO 1815 1815 5.1V 47F HDO 22k 0.01F 1N4148 47k 50 220k 47k 1.0F 10k 470k JUMPER
SW1A
Tip A92 Ring 1A Bridge 1N4148 2.2k 47k 0.1F A42 470 220k
ONHOOK OFFHOOK
CE
47k
C945
1N4148X3
ROW1
0.1F
C945
C945
COL4/KT BRIDGE 27V 22F/50V 100k 1N4148 VDD 1.2M 4.7k DRING 1.0F JUMPER VDD 560k JUMPER 560k 47k 560k 560k 560k 560k
JUMPER
TYPACAL APPLICATION CIRCUIT(for SC91415)
CE
Rev: 2.0
24
SDO/ROW5
HOOK
HANDFREE
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
23
HDO
2001-11-13
20 19 18 17
HKS
22
PO
21
ROW4
16
VDD ROW3 ROW2 ROW1
15
DTMF
14
HFO
13
RMUTE
LCD DRIVER
1.5V
SC91415DK
XMUTE ROW6 XOUT COL5 COL3 COL2 COL1 VSS XIN
PC817
4 7 */T M1 M6
5 8 0 M2 M7
6 9 # M3 M8
F A RD/P M4 M9
EM2 EM3 ST M5 M10
1
2
3
4
5
6
7
8
9
10
11
12
DRING
Silan Semiconductors
DRING
1
2
3
HD
EM1
COL4/KT
HFI
2 TO 4 LINE SPEECH NETWORK
3.58MHz 10pF BUZZER 10pF
AUDIO POWER AMPLIFER HF
560k
560k
560k
560k
20
Silan Semiconductors
CHIP TOPOGRAPHY
SC91415 SERIES
Size: 2.16 x 2.33 mm
2
PAD COORDINATES (Unit: m)
No. 1 2 3 4 5 6 7 8 9 10 11 Symbol P1 P2 P3 P4 P5 P6 P7 P8 P9 P10 P11 X -1002.4 -1002.4 -1002.4 -1002.4 -839.9 -563.3 321.0 721.4 1006.5 1006.5 1006.5 Y -256.3 -450.7 -649.1 -878.2 -925.4 -925.4 -925.4 -926.5 -794.9 -639.7 -343.1 No. 12 13 14 15 16 17 18 19 20 21 22 Symbol P12 P13 P14 P15 P16 P17 P18 P19 P20 P21 P22 X 1006.5 1006.5 1007.2 849.2 556.0 379.6 108.0 -1002.4 -1002.4 -1001.4 -1002.4 Y 350.1 608.3 846.3 923.4 923.4 923.4 923.4 719.1 501.8 200.2 5.1
Note: The original point of the coordinate is the die center.
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2.0 2001-11-13
21
Silan Semiconductors
PACKAGE OUTLINE
SC91415 SERIES
UNIT: mm
2.54
DIP-18-300-2.54
6.40
1.50 22.95
7.62
15 degree
3.51
0.46
3.30
5.08
DIP-20-300-2.54
2.54
UNIT: mm
6.40
1.50 22.95
7.62
15 degree
3.51
0.46
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2.0 2001-11-13
22
3.30
5.08
0.25
0.25
Silan Semiconductors
PACKAGE OUTLINE
SC91415 SERIES
UNIT: mm
2.54
DIP-22-400-2.54
9.34
1.50 27.88
10.16
15 degree
3.51
0.46
SDIP-24-300-2.54
2.54
3.30
5.08
UNIT: mm
0.25
6.40
1.50 34.50
7.62
15 degree
3.51
0.46
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2.0 2001-11-13
23
3.30
5.08
0.25

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