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PDF CS4231A Data sheet ( Hoja de datos )
| Número de pieza | CS4231A | |
| Descripción | PARALLEL INTERFACE MULTIMEDIA AUDIO CODEC | |
| Fabricantes | Crystal Semiconductor | |
| Logotipo |  |
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Semiconductor Corporation
CS4231A
Parallel Interface, Multimedia Audio Codec
Features
General Description
• Windows Sound SystemTM
Compatible Codec
• ADPCM Compression/Decompression
• Extensive Software Support
• MPC Level 2 Compatible Mixer
• Dual DMA Registers support Full
Duplex Operation
• On-Chip FIFOs for higher performance
• Selectable Serial Audio Data Port
• Pin Compatible with CS4231/CS4248
The CS4231A includes stereo 16-bit audio converters
and complete on-chip filtering for record and playback
of 16-bit audio data. In addition, analog mixing and
programmable gain and attenuation are included to
provide a complete audio subsystem. A selectable se-
rial port can pass audio data to and from DSPs or
ASICs. Crystal-developed high-performance software
drivers for various operating systems are available that
support all the CS4231A features including full duplex
transfers. The CS4231A is a pin compatible upgrade to
the CS4231 and CS4248.
ORDERING INFORMATION:
CS4231A-KL 0 to 70°C
CS4231A-KQ 0 to 70°C
68-pin PLCC
100-pin TQFP
VD1 VD2 VD3 VD4 SDOUT SDIN SCLKDFSaYtNaCShVeREeFt4UVR.cEoFIm LFILT RFILT
VA1 VA2
DataShee
D<7:0>
A<1:0>
8
2
IRQ
DBDIR
DBEN
CS
RD
WR
PDRQ
CDRQ
Parallel
Bus
Interface
PDAK
CDAK
XCTL1
XCTL0
PDWN
Audio Data Serial Port
I16
VREF
16-bit
A/D
FIFO
16
Samples
Linear
µ-law
A-law
ADPCM
I8 or I28
Optional
Dither
I10
16-bit
A/D
Loopback
Digital I13
Attenuation
Gain
I0
Gain
I1
I0
Mux
I1
20dB Gain
I0
I1
LMIC
RMIC
LLINE
RLINE
LAUX1
RAUX1
Mix I3
Gain I2
Mix I19
Gain I18
FIFO
16
Samples
I 16
Linear
µ-law
A-law
ADPCM
I8
16 Bit Timer I20,I21
16-bit
D/A
I6
Mute
16-bit
D/A
Mute
I7
Oscillators I8
Mix
Gain I26
Mute
I26
LOUT
MOUT
ROUT
Mix I4
Gain I5
LAUX2
RAUX2
DGND1 DGND2 DGND3/4/7/8 TEST
XTAL1I XTAL1O XTAL2I XTAL2O
MIN
AGND1 AGND2
Preliminary Product Information This document contains information for a new product. Crystal
Semiconductor reserves the right to modify this product without notice.
DataSheet4CUr.ycsotmal Semiconductor Corporation
P.O. Box 17847, Austin, TX 78760
(512) 445-7222 Fax: (512) 445-7581
Copyright © Crystal Semiconductor Corporation 1994
(All Rights Reserved)
SEPT ’94
DS139PP2
1
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1 page  
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CS4231A
AUXILIARY INPUT MIXERS (TA = 25 °C; VA1, VA2, VD1-VD4 = +5V;
Input Levels: Logic 0 = 0V, Logic 1 = VD1-VD4; 1 kHz Input Sine wave)
Parameter
Symbol Min Typ Max Units
Mixer Gain Range Span
LINE, AUX1, AUX2 (Note 6)
MIN
45 46.5
42 45
dB
dB
Step Size
LINE, AUX1, AUX2
MIN
1.3 1.5 1.7 dB
2.3 3.0 3.4 dB
Notes: 6. All mixer gain values assume OLB=1. If OLB=0, the analog output will be 3 dB below listed settings.
ABSOLUTE MAXIMUM RATINGS (AGND, DGND = 0V, all voltages with respect to 0V.)
Parameter
Symbol
Min
Power Supplies:
et4U.com Input Current per Pin
Digital VD1-VD4
Analog VA1,VA2
(Except Supply Pins)
-0.3
-0.3
-10.0
Output Current per Pin
Analog Input Voltage
(Except DSautpapSlyhePeint4sU) .com
-50
-0.3
Digital Input voltage
-0.3
Ambient Temperature
(Power Applied)
-55
Storage Temperature
-65
Warning: Operation beyond these limits may result in permanent damage to the device.
Normal operation is not guaranteed at these extremes.
Max
6.0
6.0
+10.0
+50
VA+0.3
VD+0.3
+125
+150
Units
V
V
mA
mA
V
V
°C
°C
DataShee
RECOMMENDED OPERATING CONDITIONS (AGND, DGND = 0V, all voltages with repect
to 0V.)
Power Supplies:
Parameter
Operating Ambient Temperature
Symbol Min Typ Max Units
Digital VD1-VD4 4.75 5.0 5.25 V
Analog VA1,VA2 4.75 5.0 5.25 V
TA 0 25 70 °C
DataSheet4U.com
DS139PP2
DataSheet4 U .com
5
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CS4231A
+5V Analog (preferred)
If a separate +5V analog
supply is available, attach here
and remove the 2.0Ω resistor
1 µF + 0.1 µF
2.0Ω
0.1 µF
Ferrite Bead
0.1 µF
0.1 µF 1 µF
+
0.1 µF
1 µF +
+5V
Supply
et4U.com
36 35 19
15
1
7
47kΩ
47
1 µF
33 pF
21
16.9344MHz 33 pF
22
33 pF
17
24.576MHz 33 pF
18
Microphone
Inputs
Line
Inputs
Auxilary
Inputs
47kΩ
0.33 µF
0.33 µF
0.33 µF
0.33 µF
0.33 µF
0.33 µF
0.33 µF
0.33 µF
0.33 µF
1 µF
29
28
30
27
39
42
38
43
46
41
1 µF 40
47kΩ
This trace
must be
very short
26
1000 pF
NPO
31
1000 pF
NPO
32
+
10 µF
0.47 µF
33
0.1 µF
VA2 VA1 VD4
MOUT
VD3
VD1
VD2
XTAL2I
XTAL2O
XTAL1I
XTAL1O
LMIC
RMIC
LLINE
RLINE
LAUX1
RAUX1
LAUX2
RAUX2
MIN
ROUT
LOUT
RFILT
LFILT
VREF
VREFI
AGND1,2
34 37
SCLK
FSYNC
SDOUT
SDIN
51
50
52
49
PDWN
VD3/4
23
DSP
or
ASIC
59 18
CS
Address
Decode
DataSheet4U.com
CS4231A
( )PLCC
Pinout
A1
A0
WR
RD
XCTL0
XCTL1
9
10
61
60
56
58
D7 8
D0
DBDIR
DBEN
PDRQ
CDRQ
PDAK
CDAK
IRQ
62
63
14
12
13
11
57
(Optional)
74F245
DD
AA
TT
AA
BA
DIR
G
8
ISA
BUS
SA 19:2
AEN
SAI
SAO
IOWC
IORC
D7
D0
DRQ<X>
DRQ<Y>
DAK<X>
DAK<Y>
IRQ<Z>
TEST DGND3, 4, 7, 8 DGND1,2
55 16 20 53 64 2 8 Board Analog
Ground
Board Digital
Ground
DataShee
DataSheet4U.com
DS139PP2
Figure 1. Recommended Connection Diagram
(See Figures 16 & 17 for Layout Recommendations)
11
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| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet CS4231A.PDF ] | |
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