Philips pcd3332 DATASHEETS

INTEGRATED CIRCUITS

DATA SH EET

PCD3332-2; PCD3332-3; PCD3332-S

Multistandard pulse/tone repertory diallers/ringers

Product speciﬁcation File under Integrated Circuits, IC03

1997 Jan 13

Philips Semiconductors Product speciﬁcation

Multistandard pulse/tone repertory diallers/ringers

1 FEATURES 2 GENERAL DESCRIPTION 3 ORDERING INFORMATION 4 PINNING

4.1 PCD3332-2

4.2 PCD3332-3

4.3 PCD3332-S 5 FUNCTIONAL DESCRIPTION

5.1 Pin description

5.1.1 Supply terminals (VDD and VSS)

5.1.2 Oscillator input/output (XTAL1 and XTAL2)

5.1.3 Chip enable and frequency discriminator input (CE/FDI)

5.1.4 Cradle switch input (CSI)

5.1.5 Reset input (RESET)

5.1.6 Pulse dial and flash output (DP/FL)

5.1.7 Mute output (MUTE)

5.1.8 DTMF output (TONE)

5.1.9 Register recall (EARTH)

5.1.10 Ringer Tone Enable (RTE: PCD3332-2/S)

5.1.11 Hands-Free/Ringer Tone Enable

(HF/RTE: PCD3332-3)

5.1.12 Volume control outputs (VOL1 and VOL2)

5.1.13 Ringer volume settings

5.1.14 Dial Mode Output /Key-Tone Enable (DMO/KTE)

5.1.15 Keyboard inputs/outputs

5.2 Keyboards

5.2.1 Keyboard function keys

5.2.2 Diode options

5.2.3 Hook modes

6 OPERATING PROCEDURES

6.1 Operating modes

6.1.1 On-hook mode or ringer mode

6.1.2 Dial mode

6.1.3 Reset delay time

6.1.4 Programming mode

6.1.5 Ringer mode (PCD3332-2)

6.1.6 Ringer mode (PCD3332-3/S)

7 LIMITING VALUES 8 CHARACTERISTICS 9 PACKAGE OUTLINES 10 SOLDERING

10.1 Introduction

10.2 DIP

10.2.1 Soldering by dipping or by wave

10.2.2 Repairing soldered joints

PCD3332-2; PCD3332-3;

PCD3332-S

10.3 SO

10.3.1 Reflow soldering

10.3.2 Wave soldering

10.3.3 Repairing soldered joints 11 DEFINITIONS 12 LIFE SUPPORT APPLICATIONS

1997 Jan 13 2

Philips Semiconductors Product speciﬁcation

Multistandard pulse/tone repertory diallers/ringers

1 FEATURES

• Pulse, DTMF and VT ‘mixed mode’ dialling

• 13 number repertory dial, up to 32 digits per number

– 10 one-touch redial or 3 one-touch plus 10 two-touch – 250 digits maximum storage

• Last number redial up to 32 digits

• Repertory and redial memory integrity check (memory

contents check)

• Notepad memory function

• Flash and Earth register recall

• Access pause generation and termination

• On-chip power-on reset

• Supports function keys as follows:

– STORE: Program/Store – MRC: Memory Recall – FLASH: calibrated line-break pulse – LNR: Last Number Redial – PAUSE: insert access pause between stored digits – TONE: change from pulse to DTMF dialling (mixed

mode) – VOL+/−: speaker/ringer volume control – 10 dedicated memory keys

• Strap functions (diode options): – MLA: Memory Location Access selection – RDS: Enable/Disable ringer validation delay

(PCD3332-2)

– DOO: enable/disable transmission ∗ or #

(PCD3332-3/S)

PCD3332-2; PCD3332-3;

PCD3332-S

– F/E: register recall Flash or Earth – M/S: Mark-to-Space ratio selection (3:2or2:1) – APT: Access Pause Timing selection – TBT: Tone Burst Time selection – FTS: Flash Time Selection – P/T: Pulse or Tone (DTMF) mode selection – RMS: Ringer Melody Selection (PCD3332-2 and

PCD3332-S)

– RFS: Ringer input frequency range selection

(19.5 to 57 Hz or 14.4 to 68 Hz) (PCD3332-3)

• Ringer tone generator

• Ringer-input frequency discriminator

• Ringer melody selection via keypad

• Volume control for loudspeaker phones (PCD3332-3)

• On-hook dialling/hands-free mode control (PCD3332-3)

• Paciﬁer tones.

2 GENERAL DESCRIPTION

The PCD3332-2, PCD3332-3 and PCD3332-S are mixed-mode multistandard repertory dialler/ringer ICs, fabricated in a low threshold voltage CMOS technology. Dial parameters of these ICs can be set by diode options to meet the speciﬁc requirements for various countries. The on-chip tone generators are used for DTMF dialling and ringer melody generation. A discriminator input enables the tone output only if a correct ringer frequency is applied. Repertory numbers of up to 32 digits can be stored, with maximum storage of 250 digits.

3 ORDERING INFORMATION

TYPE

NUMBER

PCD3332-2P DIP28 plastic dual in-line package; 28 leads (600 mil) SOT117-1 PCD3332-2T SO28 plastic small outline package; 28 leads; body width 7.5 mm SOT136-1 PCD3332-3P DIP28 plastic dual in-line package; 28 leads (600 mil) SOT117-1 PCD3332-3T SO28 plastic small outline package; 28 leads; body width 7.5 mm SOT136-1 PCD3332-SP DIP28 plastic dual in-line package; 28 leads (600 mil) SOT117-1 PCD3332-ST SO28 plastic small outline package; 28 leads; body width 7.5 mm SOT136-1

1997 Jan 13 3

NAME DESCRIPTION VERSION

PACKAGE

Philips Semiconductors Product speciﬁcation

Multistandard pulse/tone repertory diallers/ringers

4 PINNING

4.1 PCD3332-2 SYMBOL PIN TYPE DESCRIPTION

(2)

(4) (4)

(2) (4) (3)

(3) (4) (4)

(1) (1) (1)

(1)

(1) (1) (1) (1) (1) (1)

(1)

row 2 keyboard output row 3 keyboard output row 4 keyboard output row 5 keyboard output diode option mute output earth recall

column 6 input column 5 input column 4 input column 3 input column 2 input column 1 input dial pulse/ﬂash output not used, leave pin unconnected volume 2 output

volume 1 output dial mode output key/ringer tone enable row 1 keyboard output

ROW2 1 I/O ROW3 2 I/O ROW4 3 I/O ROW5 4 O DIODE 5 I/O MUTE 6 O EARTH 7 O CSI 8 I cradle switch input XTAL1 9 I oscillator input XTAL2 10 O oscillator output RESET 11 I reset input CE/FDI 12 I chip enable/frequency discriminator COL6 13 I/O COL5 14 I/O COL4 15 I/O COL3 16 I/O COL2 17 I/O COL1 18 I/O DP/FL 19 O not used 20 O VOL2 21 O V

22 P ground TONE 23 O tone generator output V

24 P positive supply voltage VOL1 25 O DMO/KTE 26 O RTE 27 O ROW1 28 I/O

PCD3332-2; PCD3332-3;

PCD3332-S

EARTH

RESET

CE/FDI

ROW2

ROW3

ROW4

ROW5

DIODE

5 6

MUTE

PCD3332-2

CSI

XTAL1

XTAL2

11 12 13

COL6

COL5

MBE757

Fig.1 Pin configuration.

28 27 26 25 24 23 22 21 20 19 18 17 16 15

ROW1 RTE DMO/KTE VOL1 V

TONE V

VOL2 not used DP/FL COL1 COL2 COL3 COL4

Notes on types and initial states of inputs and outputs

1. Standard input or output, set to HIGH state.

2. Open-drain output, set to HIGH state.

3. Open-drain output, reset to LOW state.

4. Push-pull output, reset to LOW state.

1997 Jan 13 4

Philips Semiconductors Product speciﬁcation

Multistandard pulse/tone repertory diallers/ringers

4.2 PCD3332-3 SYMBOL PIN TYPE DESCRIPTION

ROW2 1 I/O ROW3 2 I/O ROW4 3 I/O ROW5 4 O DIODE 5 I/O MUTE 6 O EARTH 7 O

(1) (1) (1)

(2)

(1) (4) (4)

CSI 8 I cradle switch input XTAL1 9 I oscillator input XTAL2 10 O oscillator output RESET 11 I reset input CE/FDI 12 I chip enable/frequency discriminator COL6 13 I/O COL5 14 I/O COL4 15 I/O COL3 16 I/O COL2 17 I/O COL1 18 I/O DP/FL 19 O LFE 20 O VOL2 21 O V

22 P ground

(1)

(1) (2) (4) (3)

TONE 23 O tone generator output V

VOL1 25 O DMO/KTE 26 O HF/RTE 27 O ROW1 28 I/O

24 P positive supply voltage

(3) (4) (4)

(1)

row 2 keyboard output row 3 keyboard output row 4 keyboard output row 5 keyboard output diode option mute output earth recall

column 6 input column 5 input column 4 input column 3 input column 2 input column 1 input dial pulse/ﬂash output low-frequency ampliﬁer enable volume 2 output

volume 1 output dial mode output hands-free/ringer tone enable row 1 keyboard output

PCD3332-2; PCD3332-3;

PCD3332-S

DIODE

EARTH

RESET CE/FDI

ROW2

ROW3

ROW4

ROW5

5 6

MUTE

PCD3332-3

CSI

XTAL1

XTAL2

11 12 13

COL6

COL5

MBE752

Fig.2 Pin configuration.

28 27 26 25 24 23 22 21 20 19 18 17 16 15

ROW1 HF/RTE DMO/KTE VOL1 V

TONE V

VOL2 LFE DP/FL COL1 COL2 COL3 COL4

Notes on types and initial states of inputs and outputs

1. Standard input or output, set to HIGH state.

2. Open-drain output, set to HIGH state.

3. Open-drain output, reset to LOW state.

4. Push-pull output, reset to LOW state.

1997 Jan 13 5

Philips Semiconductors Product speciﬁcation

Multistandard pulse/tone repertory diallers/ringers

4.3 PCD3332-S SYMBOL PIN TYPE DESCRIPTION

ROW2 1 I/O ROW3 2 I/O ROW4 3 I/O ROW5 4 O DIODE 5 I/O MUTE 6 O EARTH 7 O

(1) (1) (1)

(2)

(1) (4) (4)

22 P ground

(1)

(1) (2) (4) (3)

TONE 23 O tone generator output V

VOL1 25 O DMO/KTE 26 O RTE 27 O ROW1 28 I/O

24 P positive supply voltage

(3) (4) (4)

(1)

row 2 keyboard output row 3 keyboard output row 4 keyboard output row 5 keyboard output diode option mute output earth recall

column 6 input column 5 input column 4 input column 3 input column 2 input column 1 input dial pulse/ﬂash output not used, leave pin unconnected volume 2 output

volume 1 output dial mode output key/ringer tone enable row 1 keyboard output

PCD3332-2; PCD3332-3;

PCD3332-S

age

EARTH

RESET CE/FDI

ROW2

ROW3

ROW4

ROW5

DIODE

5 6

MUTE

PCD3332-S

CSI

XTAL1

XTAL2

11 12 13

COL6

COL5

MBE754

Fig.3 Pin configuration.

28 27 26 25 24 23 22 21 20 19 18 17 16 15

ROW1 RTE DMO/KTE VOL1 V

TONE V

VOL2 not used DP/FL COL1 COL2 COL3 COL4

Notes on types and initial states of inputs and outputs

1. Standard input or output, set to HIGH state.

2. Open-drain output, set to HIGH state.

3. Open-drain output, reset to LOW state.

4. Push-pull output, reset to LOW state.

1997 Jan 13 6

Philips Semiconductors Product speciﬁcation

Multistandard pulse/tone repertory diallers/ringers

5 FUNCTIONAL DESCRIPTION

References to the ‘PCD3332’ or the ‘device’ apply to the PCD3332-2, the PCD3332-3 and the PCD3332-S.

5.1 Pin description

5.1.1 S To retain data in the RAM, the standby supply voltage of

1 V, must be maintained. To ensure that the contents of the RAM are secure in the event of a power failure, a capacitor may be connected across the supply terminals. The capacitor must have a suitable value to maintain the standby voltage for a certain period of time. The minimum operating voltage of these devices is 2.5 V. The internal power-on reset is enabled for a voltage below this minimum operating voltage.

5.1.2 O The time base for the PCD3332 is a crystal-controlled

on-chip oscillator, which incorporates a 3.58 MHz crystal or ceramic resonator connected between XTAL1 and XTAL2. It should be noted that when using a ceramic resonator, the minimum supply voltage increases. The oscillator starts when VDD reaches its operating voltage level and CE = HIGH (min. 2.5 V).

5.1.3 C

For DC inputs this pin acts as the chip enable (CE) input, and is active HIGH. CE in combination with the Cradle Switch Input (CSI) determines the mode of the device. See Table 1.

For AC inputs the pin acts as the (ringer) Frequency Discriminator Input (FDI).

To generate a correct ringer output tone, the input frequency must be between 19.5 Hz and 57 Hz; frequencies below 18 Hz and higher than 64 Hz are omitted.

The PCD3332-3 has a second (diode selectable) range of valid input frequencies of 14.5 Hz to 68 Hz; frequencies below 14 Hz and higher than 76 Hz are omitted.

Ringer response timing and detection is illustrated in Fig.15.

UPPLY TERMINALS (VDDAND V

SCILLATOR INPUT/OUTPUT (XTAL1 AND XTAL2)

HIP ENABLE AND FREQUENCY DISCRIMINATOR

(CE/FDI)

INPUT

)

PCD3332-2; PCD3332-3;

PCD3332-S

5.1.4 C CSI is normally generated from the physical ‘off-hooking’

of the phone. CSI in combination with CE/FDI determines the operating mode of the PCD3332, as shown in Table 1.

Table 1 Different modes of the PCD3332

INPUT CSI INPUT CE/FDI PCD3332 STATUS

5.1.5 R RESET activates the on-chip reset circuit and is active

HIGH. The reset circuit initializes all inputs and outputs. Two other events will cause the chip to initialize:

• CE going HIGH

• VDD falling below 2.5 V, then being restored (power-on

reset).

For this reason, RESET may not be required, and can be connected to VSS. This should preferably be via a 100 kΩ resistor, to save leakage current.

Note that a suitable capacitor connected between VDD and VSS will inhibit the decrease of voltage at VDD after a power failure, and thus extend the time until the power-on reset is initiated.

5.1.6 P This pin is the output for:

• The dial pulse sequence (DP)

• The calibrated LOW pulse (FL) after the FLASH key is

pressed.

The dialling sequence for pulse dialling is shown in Figs 11 and 12. DP/FL starts HIGH, pulses are LOW, and the inter-digit pauses are HIGH. Thus, DP/FL is HIGH during a line-make and LOW during a line-break.

If the Flash/Earth diode option is set to FLASH, then when FLASH is pressed a LOW pulse is output, with a calibrated duration also determined by diode option.

RADLE SWITCH INPUT (CSI)

LOW LOW stop or power-down

mode

HIGH LOW idle mode

LOW HIGH ringer mode

HIGH HIGH conversation or

off-hook mode

ESET INPUT (RESET)

ULSE DIAL AND FLASH OUTPUT (DP/FL)

1997 Jan 13 7

Philips Semiconductors Product speciﬁcation

Multistandard pulse/tone repertory diallers/ringers

5.1.7 MUTE OUTPUT (MUTE) During the dialling sequence this push-pull output is

activated. In the pulse dialling mode, MUTE goes HIGH prior to the dialling action and goes LOW after the last t

(interdigit pause), see Figs 11 and 12. In DTMF

idp

dialling, MUTE goes HIGH prior to the dialling action and goes LOW after an additional ‘holdover’ time, see Figs 13 and 14.

This output is also activated if the device enters the programming mode, to avoid transmitting the keys entered.

5.1.8 DTMF The timing sequence for DTMF dialling is illustrated in

Figs 13 and 14. The tones generated by this TONE are filtered by an on-chip switched capacitor filter, and active

Table 2 DTMF frequency tolerances

ROW/COL

ROW 1 697 697.90 +0.13 +0.90 ROW 2 770 770.46 +0.06 +0.46 ROW 3 852 852.45 −0.18 −1.55 ROW 4 941 943.23 +0.24 +2.23 COL 1 1209 1206.45 −0.21 −2.55 COL 2 1336 1341.66 +0.42 +5.66 COL 3 1477 1482.21 +0.35 +5.21

OUTPUT (TONE)

STANDARD

FREQUENCY (Hz)

RC low-pass filter. Therefore, the total harmonic distortion fulfils the CEPT CS203 recommendations. An on-chip reference voltage provides output tone levels independent of supply voltages and temperatures. Spread among the individual parts is extremely low.

The DC level of the TONE output measures 0.5V the impedance is 100 Ω (typ.). Table 2 shows the frequency tolerances.

The TONE output is also used to generate the ringer melody, key entry acceptance beep, error or warning beeps and confirmation beeps. These beeps are generated/set in programming mode as a response to the users action. The ringer is designed to generate 3-melodies that may be selected using the keyboard. Table 3 shows the implemented ringer melodies.

OUTPUT

PCD3332-2; PCD3332-3;

PCD3332-S

DEVIATION

(%)

DEVIATION

(Hz)

and

Table 3 Ringer melodies

KEY DEPRESSED TONE 1 (Hz) TONE 2 (Hz) TONE 3 (Hz) TONE ON TIME (ms)

1 826 925 1037 30 2 1037 1161 1297 30 3 1297 1455 1621 30

Table 4 Beep frequencies

BEEP FUNCTION TONE 1 (Hz) TONE 2 (Hz) TONE 3 (Hz) TONE ON TIME (ms)

Key accept 2358 −− 40 − Error 2358 2358 2358 134 35 Conﬁrmation 806 899 1010 134 67

1997 Jan 13 8

TONE OFF TIME

(ms)

Philips Semiconductors Product speciﬁcation

Multistandard pulse/tone repertory diallers/ringers

5.1.9 REGISTER RECALL (EARTH) If the Flash/Earth diode option of the PCD3332 is set to the

Earth, then dialling the EARTH either out of Repertory/LNR or by pressing the FLASH key will generate a HIGH pulse at the push-pull output EARTH for a calibrated time. Figures 12 and 14 illustrate the EARTH timing relationship with other signals. The calibrated EARTH time is followed by an interdigit time t dialling of EARTH can only be performed after the interdigit time has elapsed.

If the Flash key was the first key depressed directly after going off-hook, followed by a second depressing of the Flash key while the EARTH is still in progress, then the second depression will be ignored.

5.1.10 R The PCD3332-2 and PCD3332-S generate tones for the

ringer output stage and key tones when depressing a function key at the keypad. Output RTE will go HIGH and stay HIGH for the duration of the tone generated at output TONE.

5.1.11 H

The PCD3332-3 generates tones for the ringer output stage and key tones when depressing a function key at the keypad. Output HF/RTE will go HIGH and stay HIGH for the duration of the tone generated at output TONE.

During the conversation mode, HF/RTE is used for enabling the hands-free mode. Depressing the HOOK key will change the operation mode as follows:

• Change from on-hook (stop mode) to hands-free mode

• Toggles the listening-in mode

• Change from handset to hands-free.

5.1.12 V

INGER TONE ENABLE (RTE: PCD3332-2/S)

ANDS-FREE/RINGER TONE ENABLE (HF/RTE:

PCD3332-3)

OLUME CONTROL OUTPUTS (VOL1 AND VOL2)

5.1.12.1 PCD3332-2

. A second

idp

PCD3332-2; PCD3332-3;

PCD3332-S

Table 5 shows the volume outputs setting, as well as the default setting in case of a power failure or if the power is supplied for the first time.

5.1.12.2 PCD3332-3

The PCD3332-3 has the facility to control the ringer output signal and the loudspeaker signal during listening-in or hands-free operation. Depressing the keys VOL− or VOL+ during the ringer mode will change the ringer volume setting. Depressing the keys VOL− or VOL+ during the conversation mode will change the loudspeaker volume setting.

If the maximum volume level is reached, depressing the VOL+ key will not change the volume setting. If the minimum volume level is reached, depressing the VOL− key will not change the volume setting. Selection between ringer volume or conversation mode volume, is performed in the hardware using the HF/RTE output. In the ringer mode the output HF/RTE is HIGH.

Table 5 shows the volume outputs setting, as well as the default setting in case of a power failure or if the power is supplied for the first time.

5.1.12.3 PCD3332-S

The PCD3332-S has the facility to control the ringer output signal by depressing the keys VOL− or VOL+ during the ringer mode.

If the maximum volume level is reached, depressing the VOL+ key will not change the volume setting. If the minimum volume level is reached, depressing the VOL− key will not change the volume setting. Selection between ringer volume or conversation mode volume, is performed in the hardware using the RTE output. In the ringer mode the output RTE is HIGH.

Table 5 shows the volume outputs setting, as well as the default setting in case of a power failure or if the power is supplied for the first time.

The PCD3332-2 has the facility to control the ringer output signal, as well as the loudspeaker volume, by depressing the keys ∗/VOL− or #/ VOL+ during the ringer mode.

If the maximum volume level is reached, depressing #/VOL+ key will not change the volume setting. If the minimum volume level is reached, depressing ∗/VOL− key will not change the volume setting. Selection between ringer volume or conversation mode volume, is performed in the hardware using the RTE output. In the ringer mode the output RTE is HIGH.

1997 Jan 13 9

Philips Semiconductors Product speciﬁcation

Multistandard pulse/tone repertory diallers/ringers

5.1.13 RINGER VOLUME SETTINGS

handbook, halfpage

Fig.4 FSM for volume control (PCD3332-2).

VOL+/#

MGC616

DEFAULT

VOLUME

HIGH

VOLUME

LOW

VOLUME

LOWEST VOLUME

VOL−/*

VOL−/

PCD3332-2; PCD3332-3;

PCD3332-S

Table 5 State assignment

STATE VOL2 VOL1

Default volume setting HIGH HIGH High volume setting HIGH LOW Low volume setting LOW HIGH Lowest volume setting LOW LOW

5.1.14 D

In the PULSE dialling mode the DMO/KTE output is activated (HIGH), at dialling the Make/Brake pulse dial sequences. Figures 11 and 12 illustrate the signal timing relationship.

In the programming mode, the DMO/KTE output is activated at the same time the key beeps are generated at output TONE and may be used to enable the key tone to the earpiece amplifier.

5.1.15 K A single contact keyboard with a maximum of 6 columns

and 5 rows can be connected to the PCD3332-2. The keyboard scanning is started if a key depression is detected. The rows are scanned while the columns are used as sense inputs.

IAL MODE OUTPUT /KEY-TONE ENABLE

(DMO/KTE)

EYBOARD INPUTS/OUTPUTS

handbook, halfpage

VOL+

MGC615

DEFAULT

VOLUME

HIGH

VOLUME

LOW

VOLUME

LOWEST VOLUME

VOL−

Fig.5 FSM for volume control (PCD3332-3/S).

To overcome key bouncing, a debounce on/off time of approximately 14 to 20 ms is implemented.

Only one single key depression is validated and accepted at any one time. Once a key is accepted the keyboard scanning is continued until no further keys are depressed. This means that if a key is accepted but still depressed while a second key is entered, the second key depression is ignored. Also, if two or more keys are depressed within the debounce time while no key is yet accepted, all keys are ignored.

Keyboard detection is also performed in the ringer mode to enable the ringer volume setting and ringer melody selection.

In the on-hook mode or power-down mode of the PCD3332-2 and PCD3332-S, the keyboard I/Os are set to HIGH except ROW 5 which is set to LOW.

1997 Jan 13 10

+ 22 hidden pages

Philips pcd3332 DATASHEETS

CONTENTS

1 FEATURES

2 GENERAL DESCRIPTION

3 ORDERING INFORMATION

4 PINNING

PCD3332-2

PCD3332-3

PCD3332-S

5 FUNCTIONAL DESCRIPTION

5.1 Pin description