PDF PCD5032T Data sheet ( Hoja de datos )

Número de pieza	PCD5032T
Descripción	ADPCM CODEC for digital cordless telephones
Fabricantes	NXP Semiconductors
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No Preview Available ! INTEGRATED CIRCUITS DATA SHEET PCD5032 ADPCM CODEC for digital cordless telephones Product speciﬁcation Supersedes data of August 1993 File under Integrated Circuits, IC17 1997 Apr 03 1 page Philips Semiconductors ADPCM CODEC for digital cordless telephones Product speciﬁcation PCD5032 6 PINNING SYMBOL RESET n.c. RPE RPI n.c. PO n.c. TPI TPE n.c. SCL SDA n.c. A0 TM+ n.c. TM− n.c. VREF− VREF+ n.c. VGA RE− n.c. RE+ VDD n.c. VSS n.c. TEST BZ− n.c. BZ+ CLK n.c. PIN(1)(2) QFP44 1 2 3 SO28 4 − 5 46 5− 67 7− 88 99 10 − 11 10 12 11 13 − 14 12 15 13 16 − 17 14 18 − 19 15 20 16 21 − 22 17 23 18 24 − 25 19 26 20 27 − 28 21 29 − 30 22 31 23 32 − 33 24 34 25 35 − TYPE DESCRIPTION I reset input; active HIGH − not connected O receiver PCM output enable (active LOW); direction from ADPCM interface to earpiece I receiver PCM input; direction from ADPCM interface to earpiece − not connected O PCM data output − not connected I transmitter PCM input; direction from microphone to ADPCM interface O transmitter PCM output enable (active LOW); direction from microphone to ADPCM interface − not connected I serial clock input; I2C-bus I serial data input; I2C-bus − not connected I address select input; I2C-bus I transmitter audio positive input (microphone) − not connected I transmitter audio negative input (microphone) − not connected O negative reference voltage output; internally generated, intended for electret microphone supply O positive reference voltage output; internally generated, intended for electret microphone supply − not connected O analog signal ground output O receiver audio negative output (earpiece) − not connected O receiver audio positive output (earpiece) P positive supply voltage (2.7 V to 5.5 V) − not connected P negative supply voltage (0 V) − not connected I test mode input; to be connected to VSS in normal application O ringer negative output − not connected O ringer positive output I clock input − not connected 1997 Apr 03 5 5 Page Philips Semiconductors ADPCM CODEC for digital cordless telephones Product speciﬁcation PCD5032 Table 2 Overview of gain control options FUNCTION I2C-CODE Receiver 01XXX101 gain (relative) 01XXX110 01XXX111 01XXX000 01XXX001 01XXX010 01XXX011 01XXX100 Receiver volume 01000XXX 01001XXX 01010XXX 01011XXX 01100XXX 01101XXX 01110XXX 01111XXX Transmitter 10XXX101 gain (relative) 10XXX110 10XXX111 10XXX000 10XXX001 10XXX010 10XXX011 10XXX100 Transmitter 10XX1XXX mute GAIN −3 dB −2 dB −1 dB 0 dB +1 dB +2 dB +3 dB +4 dB 0 dB −6 dB −12 dB −18 dB −24 dB −30 dB −36 dB RX MUTE −3 dB −2 dB −1 dB 0 dB +1 dB +2 dB +3 dB +4 dB TX MUTE NOTE default default default default OFF 7.2.2 SIDETONE With the I2C-bus interface the (local) sidetone level can be set to −12, −18, −24 dB, or switched off. See Table 3. The sidetone level is independent of the receiver volume control setting. 7.2.3 TONE GENERATOR AND RINGER The PCD5032 contains a programmable tone generator which can be used for generating ringer tones (BZ+, BZ−) or local information tones in the receive path (RE+, RE−). By setting the TONE bit (bit 3) in the operation mode register, the tone output will be directed to the receiver DAC, otherwise the tones will be sent to the ringer output stage. Table 4 shows the possible frequency and volume settings. Table 3 Sidetone level options FUNCTION I2C-CODE OPTION NOTE Sidetone 1000XXXX 1001XXXX 1010XXXX 1011XXXX No local sidetone default Level = −12 dB Level = −18 dB Level = −24 dB Table 4 Tone output frequency/volume options FUNCTION I2C-CODE OPTION NOTE Volume (relative) Frequency 11XXX000 11XXX001 11XXX010 11XXX011 11XXX100 11XXX101 11XXX110 11XXX111 11000XXX 11001XXX 11010XXX 11011XXX 11100XXX 11101XXX 11110XXX 11111XXX Signal off −29 dB −23 dB −17 dB −11 dB −5 dB −0 dB +4 dB 400 Hz 421 Hz 444 Hz 800 Hz 1000 Hz 1067 Hz 1333 Hz 2000 Hz default sinewave sinewave sinewave sinewave sinewave sinewave squarewave The ringer output (BZ) is differential and is intended for low-ohmic devices. If the ringer is switched off then both outputs are low. The output signal is a pulse density modulated block wave (on a 32 kHz basic pulse rate) to generate a sinewave-like output signal, see Fig.9. Volume is controlled by changing the pulse width of each pulse. In the square wave mode a full square wave is generated and results in the maximum volume. The volume settings (in dB) are given for the first harmonic signal component. 1997 Apr 03 11 11 Page

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