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Número de pieza | PCD5032 | |
Descripción | ADPCM CODEC for digital cordless telephones | |
Fabricantes | NXP Semiconductors | |
Logotipo | ||
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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 |
Páginas | Total 24 Páginas | |
PDF Descargar | [ Datasheet PCD5032.PDF ] |
Número de pieza | Descripción | Fabricantes |
PCD5032 | ADPCM CODEC for digital cordless telephones | NXP Semiconductors |
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