ICST AV2002Y, AV2002V, ICS2002V, ICS2002Y Datasheet

Integrated
Circuit
Systems, Inc.

ICS2002

Wavedec Digital Audio Codec

ICS2002RevF093094

Features

•• Digital audi o 8/16-bit record/p layba c k

•• Fully programmable sample rates including industry

standards:

- 44.1 kH z

- 22.050 kHz

- 11.025 kHz

- 8.00 kH z

- 5.513 kHz

•• DAC output over sam pl ed to simplify exte rna l fi lt e rin g.

•• Fo u r data for mats:

- 16 bit linear

- 8 bit l ine a r

- 8 bit u-law

- 8 bit a-law

•• 16 step analog output level con tro l, -1. 5dB /ste p

•• 8-bi t log sc a le di git a l vol um e con trol

•• Oversampling ADC with input filter.

•• Progra mmable IIR filter s for inp ut anti-a liasing a nd output

reconstructio n.

•• ISA bus interface

•• 8/16-bit DMA and I/O transfe r mo de s

•• Input/o utp ut FIFO buffer

•• Power-down mode

•• 44-pin PL CC pa c ka ge

Block Diagram

Description

The ICS2002 is a mixed-signal integrated circuit providing a
low-cost recording and playbac k solution for multime dia audio
appli cat ions. These ap pli cat io ns inc lude doc um en t annot ati on,
voice mail, interactive games, multimedia sound record/play­back, and Windows sound production. The ICS2002 sup-
ports the record and pla yback of 16-bit a udio data, and provides
a 8/16-bit p ar al le l interface to the industry standard PC bus.

Wavedec is a trademark of Integ rated Circuit Systems, Inc.

Pin Descriptions

PIN TYPE DESCRIPTION

SD15 - SD0 I/O Data bus
SA1 - SA0 I Address
CS I Chip select (active low)
IOW I Write strobe (active low)
IOR I Read strobe (active low)
SBHE I System High Byte En able (active low)
IOCS16 OC Indicates that the access reg iste r ca n suppor t 16 bit transfe r.
DRQP O DMA Request (play channel)
DRQR O DMA Request (r ecor d chan nel)
DACKP I DMA Ack nowl edge (play c hannel)
DACKR I DMA Acknowl edge (recor d chan nel)
TC I DMA terminal count
IRQ O Interrupt re que st (a c ti ve high , open dra in)
RESET I Reset (active high)
XTLI I Crystal oscill ator
XTLO O Crystal oscillator
PWRDN I Power-down (active low)
AUDIOIN AI Audio buffer input
ADCIN AO Audio buffer output/ input to ADC
DACOUT AO DAC audio output
BUFIN AI Uncommitted audio buffer input
BUFOUT AO Uncommitted audio buffer output
VDD P Digital +5V supply
VDDA P Analog +5V supply
VDDP P Digital +5V supply
VSS P Digital GND
VSSA P Analog GND
VSSP P Digital GND

ICS2002

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Package Pinout

44-Pin TQFP

44-Pin PLCC

ICS2002

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Absolute Maximum Ratings

Supply Voltage . . . . . . . . . . . . . . . . . . . . . . -0.5V to 7.0V

Logic Inputs . . . . . . . . . . . . . . . . . . . -0.5V to V

DD

+ 0.5V

Ambient Operating Temperature. . . . . . . . . . 0°C to 70°C

Storage Temperature . . . . . . . . . . . . . . . . . -65°C to 150 °C

Stresses abo ve tho se l isted unde r Absol ute Ma xi mum Ratings may cause pe rma nent d ama ge to the de vice. This is a stres s ratin g
only and functi ona l oper atio n of the devic e at these or any othe r conditions above those indi cat e d in the ope ra ti ona l sect io ns of
the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect product
reliability.

Electrical Characteristics

VDD = 5.0V ± 10%; GND = 0V; TA = 0°C to +70°C

DC/STATIC

P ARAME TER SYMBOL MIN TYP MAX UNITS

Digital Inputs

Input Low Voltage V

IL

-0.3 0.8 V

Input High Voltage V

IH

2.0 VDD + 0.3 V

Input Leakage Curre nt I

LI

1 µA

Input Capacitan ce C

IN

7pF

Digital Outputs

Output Low Voltage (I

OL

= 4.0mA) V

OL

0.4 V

Output High Voltage (I

OH

= 0.4mA) V

OH

2.4 V

Tristate Current I

OZ

10 µA

Output Capacita nce 10 pF
Bi-direc tional Capacitance 10 pF

Analog Inputs

Audio Input Voltage 0.7 V rm s
Audio Input Impedanc e 500k o hm
Buffer Input Impedance 500k ohm

Audio Outputs

Audio Output Voltage 0.7 V rm s
DACOUT, BUFOUT Output Impedance 1k ohm

Digital Supply Current I

CC1

1mA

Analog Supply Current I

DD2

35 mA
Power-Down Mod e 1 mA
Play Only Mode 15 mA
Record Mode 30 mA

ICS2002

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Electrical Characteristics

VDD = 5.0V ± 10% ; GND =0V; TA = 0° C to +70°C

AC/DYNAMIC

PARAMETER SYMBOL MIN TYP MAX UNITS

Address setup to command t

AS

10 ns

Address hold from command t

AH

10 ns

Command cycle time t

CCY

100 ns

Address valid to /IOCS16 delay t

AID

50 ns

IOCS16 hold from address invalid t

IH

0ns

Data valid to /IOW t

DS

50 ns

/IOR active to valid data t

DAC

60 ns

Data hold after /IOR t

DHR

0ns

Data hold after /IOW t

DHW

10 ns

/DACK setup to /IOR t

DAR

30 ns

/DACK setup to /IOW t

DAW

50 ns

/DACK hold from command t

DAH

50 ns

/CS setup to comma nd t

CS

10 ns

/CS hold from comm a nd t

CH

10 ns

TC setu p to c om m and inacti v e t

TS

25 ns

TC hold from command t

TH

0ns

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ICS2002

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