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PDF CS4237B Data sheet ( Hoja de datos )
| Número de pieza | CS4237B | |
| Descripción | CrystalClear Advanced Audio System | |
| Fabricantes | Cirrus Logic | |
| Logotipo |  |
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CS4237B
CrystalClear™ Advanced Audio System with 3D Sound
• Integrated SRS®
3D Sound Technology
•
Compatible with Sound BlasterTM, Sound Blaster
ProTM, and Windows Sound SystemTM
• Advanced MPC3-Compliant Input and Output Mixer
• Enhanced Stereo Full Duplex Operation
• Dual Type-F DMA Support
• Industry Leading Delta-Sigma Data Converters
• Fully Plug-and-Play ISA Compatible
• 3.3 V or 5 V ISA Bus Operation
• Programmable Power Management
• Hardware Master Volume Control
• Enhanced Digital Gameport
• CS9236 Wavetable Digital Audio Interface
• MPU-401 MIDI Interface
• Consumer IEC-958 Digital Output (S/PDIF)
• CS4236/CS4232/CS4231 Register Compatible
General Description
The CS4237B is a single chip multimedia audio system
that provides compatibility with the Microsoft Windows
Sound System standard and will run software written to
the Sound Blaster and Sound Blaster Pro interfaces.
The CS4237B is fully compliant with Microsoft’s PC’ 97
and WHQL audio requirements. The product includes
an internal FM synthesizer and Plug-and-Play external
interfaces for Wavetable, CD-ROM, and modem de-
vices. In addition, the CS4237B includes hardware
master volume control pins as well as extensive power
management and SRS 3D sound technology.
ORDERING INFORMATION:
CS4237B-JQ
100 pin TQFP, 14x14x1.4mm
CS4237B-KQ
100 pin TQFP, 14x14x1.4mm
XTALI XTALO VREF REFFLT
L/RFILT
OSCILLATOR
VREF
SD<7:0>
SA<11:0>
IOR
IOW
AEN
IOCHRDY
IRQ<A:F>
DRQ<A:C>
DACK<A:C>
ISA
BUS
INTERFACE
LINEAR
µ-LAW
A-LAW
ADPCM
PLUG
AND
PLAY
CODEC
REG
I/F
SERIAL
SHIFT
Config
IO
IRQ
DMA
Decode
Logic
FM
Synthesizer
LINEAR
µ-LAW
A-LAW
ADPCM
Loopback
Monitor
Attenuation
DIGITAL
MIXER
Σ
INPUT MIXER
ΣGAIN
OUTPUT MIXER
Σ GAIN
GAIN
L/RLINE
GAIN
GAIN
GAIN
L/RAUX1
L/RAUX2
CMAUX2
L/RMIC
GAIN
ATTN.
Σ
MIN
MOUT
L/ROUT
SA<12:15>
(CDROM)
(Modem)
CD-ROM, Modem, or
Upper Address Bits
DIGITAL/
ANALOG
JOYSTICK
LOGIC
CS9236
SERIAL
PORT
DSP
SERIAL
PORT
S/PDIF
MPU-401
UART
with
FIFOS
Synth. Interface
or Hardware
Volume Control
WSS
SBPRO
Registers
Peripherals
&
EEPROM
Interface
XIOW
XIOR
XD<7:0>
XA<2:0>
JOYSTICK WAVETABLE DSP SERIAL
SERIAL PORT
PORT
MIDI
SCS/ SINT/ MUTE
UP DOWN
BRESET
Advanced Product Information
Cirrus Logic, Inc.
P.O. Box 17847, Austin, TX 78760
(512) 445 7222 Fax: (512) 445 7581
http://www.cirrus.com
This document contains information for a new product. Cirrus
Logic, Inc. reserves the right to modify this product without notice.
Copyright © Cirrus Logic, Inc. 1997
(All Rights Reserved)
SEP ’97
DS213PP4
1
1 page  
CS4237B
MIXERS (TA = 25 °C; VA, VD1, VDF1-VDF4 = +5V; Input Levels: Logic 0 = 0V, Logic 1 = VD1;
1 kHz Input Sine wave, Measurement Bandwidth is 20 Hz to 20 kHz - unweighted.)
Parameter*
Mixer Gain Range Span
LINE, AUX1, AUX2
MIC, MIN
Hardware Master
(Digital)
Wavetable, Monitor, PC Wave, DSP, FM
Step Size
(Digital)
MIC, LINE, AUX1, AUX2
MIN
Hardware Master
Wavetable, Monitor, PC Wave, DSP, FM
Dynamic Range
(Analog Mixers)
-Total
-Instantaneous
Total Harmonic Distortion
(Analog Mixers)
(Note 3)
CS4237B-JQ
Min Typ Max
---
---
---
---
---
---
---
---
---
- 88 -
- 0.005 -
CS4237B-KQ
Min Typ Max
45 46.5
42 45
44 48
90 94.4
-
-
-
-
1.3 1.5 1.7
2.3 3.0 3.7
1.6 2.0 2.4
0.9 1.5 2.0
- 94.5 -
- 91 -
- 0.002 -
Units
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
ABSOLUTE MAXIMUM RATINGS (AGND, DGND, SGND = 0V, all voltages with respect to 0V.)
Parameter
Symbol
Power Supplies:
Total Power Dissipation
Digital VD1
VDF1-VDF4
Analog VA
(Supplies, Inputs, Outputs)
Input Current per Pin
Output Current per Pin
Analog Input Voltage
(Except Supply Pins)
(Except Supply Pins)
Digital Input Voltage:
SA<11:0>, IOR, IOW, AEN
SD<7:0>, DACK<A:C>
Min
-0.3
-0.3
-0.3
-
-10.0
-50
-0.3
-0.3
Max
6.0
6.0
6.0
1
+10.0
+50
VA+0.3
Units
V
V
V
W
mA
mA
V
VD1+0.3
V
All other digital inputs
-0.3 VDF+0.3
Ambient Temperature
(Power Applied)
-55 +125
Storage Temperature
-65 +150
Warning: Operation beyond these limits may result in permanent damage to the device.
Normal operation is not guaranteed at these extremes.
RECOMMENDED OPERATING CONDITIONS (AGND, DGND, SGND = 0V,
all voltages with respect to 0V.)
V
°C
°C
Parameter
Symbol Min Typ Max Units
Power Supplies:
Digital
Digital Filtered
Analog
VD1 4.75 5.0 5.25 V
(Note 5)
3.0 3.3 3.6 V
VDF1-VDF4 4.75 5.0 5.25 V
VA 4.75 5.0 5.25 V
Operating Ambient Temperature
TA 0 25 70 °C
Note 5. When VD1 is powered from 3.3 Volts, all ISA bus input pins, except DRQA, must also be 3.3 Volts.
DRQA is internally powered from the VDF supply and must have a 5 Volt interface. To use DRQA in
a 3.3 Volt application, a level translator is needed.
DS213PP4
5
5 Page 
DRQ<>
DACK<>
IOR
SD<7:0>
SA<>
AEN
DRQ<>
DACK<>
IOW
SD<7:0>
SA<>
AEN
DS213PP4
tSUDK1
tSUDK2
CS4237B
tRDDV
tADSU
tDHD1
tADHD
tSUDK1
I/O Read Cycle
tSUDK2
tSTW
tWDSU
tADSU
tDHD2
tADHD
I/O Write Cycle
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet CS4237B.PDF ] | |
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