ESS ES1988S Datasheet

ES1988 Allegro

PCI Audio-Modem Accelerator

ESS Technology, Inc.

DESCRIPTION

The ES1988 Allegro PCI audio-modem accelerator combines
advanced audio and modem functionality in a highly integrated
PCI solution. Utilizing one PCI load, the ES1988 provides a two­chip audio-modem solution with digital interface capability to an
AC‘97 codec in the dock (a.k.a. digital docking). The ES1988 is
designed to provide a low-cost, high-performance solution for
notebook PC applications.

The high-bandwidth PCI bus and an integrated high-fidelity
codec are utilized to deliver advanced PC audio features, such
as DirectSound acceleration and HRTF 3D positional audio.
The ES1988 implements multistream DirectSound and
DirectSound3D acceleration with digital mixing, sample rate
conversion, and HRTF 3D filtering for two-speaker 3D positional
audio.

The programmable audio signal processor provides support for
multiple audio streams. With its built-in DSP core, the ES1988
uses its dedicated direct memory access (DMA) engine to handle
complex signal processing tasks with a bus-mastering PCI
interface. The support functions ensure efficient transfer of audio
data streams to and from system memory buffers, providing a
system solution with maximum performance and minimal host
CPU loading. The architecture enables implementation of
communications over the Internet from multiple sources.

The ES1988 maintains full DOS legacy audio compatibility over
the standard PCI 2.1 and PCI 2.2 bus. Full DOS game
compatibility is ensured through either PC/PCI, distributed DMA
(DDMA), or transparent DMA (TDMA).

The ES1988 includes an HSP modem interface via its secondary
AC-Link connecting with the ES2828 MC‘97 codec. The MC‘97
is used as the analog front end for the modem and DAA control.
The V.90 modem runs on the host while the ES1988 serves as
the bidirectional buffer for data transmission and reception. The
modem functions include the standard AT command set, V.42bis
and Group 3 fax.

The ES1988 provides a high-quality docking solution through
proven AC-link-based digital docking. This is accomplished by
using only a five-wire digital connection. The secondary AC‘97
link (extension 2.1 compliant) of the ES1988 interfaces to a
secondary AC‘97 codec in the dock to provide high-quality audio
in the dock.

The ES1988, which operates at 3.3V digitally and 5.0V in analog,
is compliant with the Advanced Power Management (APM) 1.2,
Advanced Configuration and Power Interface (ACPI) 1.0, and
PCI Power Management Interface (PPMI) 1.0. The ES1988
supports D0, D1, D2, and D3 (hot and cold) power-saving modes
for power efficiency when the audio system is both active and
idle. CLKRUN# support is also available.

The ES1988 is available in an industry-standard 100-pin low­profile quad flat pack (LQFP) package.

Product Brief

AUDIO FEATURES

• High-performance single-chip PCI audio acceleration

• Integrated high-fidelity AC‘97 codec

• Multistream DirectSound and DirectSound 3D acceleration

• Sensaura CRL positional 3D

• High-quality sample rate conversion and digital mixing

• Direct music support

• Realtime effects processing

• S/PDIF output for PCM or AC-3 content

• Full legacy DOS game support, using TDMA, PC/PCI, or DDMA

hardware implementation methods

• Supports one additional PCI bus master devices

• HSP modem interface via MC‘97 link

• Digital docking via secondary AC-Link

MODEM FEATURES

• Data mode capabilities:

—– V.90 56 kbps
—– V.34 33.6 kbps and fallbacks
—– Standard AT command set
—– V.42 (LAPM) and MNP error correction
—– V.42bis/MNP 5 data compression
—– 3.3V power supply with 5V-tolerant inputs

• Fax mode capabilities:

—– ITU-T V.17, V.21 ch2, V.27ter, V.29
—– Group 3 (TIA/EIA 578 Class 1 and Class 2)

• Supports wake-on-ring from D3

POWER MANAGEMENT

• Compliance with APM 1.2, ACPI 1.0, and PPMI 1.1

• Compliance with Intel’s Mobile Power Guidelines ‘99

• 3.3V digital operation with 5V-tolerant inputs

• 5.0V analog operation

COMPATIBILITY

• Supports PC DOS games and applications for Sound Blaster

and SoundBlaster Pro

• Meets PC99 /PC2001and WHQL specifications

• Compliant with Intel’s audio-modem riser card and mini-PCI

specifications

and D3

hot

cold

states

ESS Technology, Inc. SAM0368-030601 1

ES1988 PINOUT

Figure 1 shows the ES1988 Allegro pinout diagram.

CD_R

MIC

LINE_IN_L

LINE_IN_R

AVDD1

AVSS1

VREF

AFILT1

ES1988 PRODUCT BRIEF

I2SL R /GT0#/GSO/GPIO5

SCLK2/GPIO10

SDO2/GPIO11/VAUXD

PCGNT#/GT0#/GS0/GPIO12

PC_BEEP

PHONE

CD_L

CD_GND

SDFS2/GPIO9

SDI2/GPIO8

OSCI

OSCO

SRESET2#/GPIO3

I2SDATA/R0#/GPIO6

MC97_DI/PCREQ#/VOLUP#/GPIO7

PME#/SPDIFO/PCGNT#/VOLDN#

VAUX

AFILT2

CAP1
CAP2

LINE_OUT_L

LINE_OUT_R

MONO_OUT

AVSS2

AVDD2

GPIO1/RXD

GPIO2/TXD

RST#

INT#

PCICLK

GND

VCC
GNT#
REQ#

AD31
AD30
AD29
AD28
AD27
AD26
AD25
AD24

75 5174 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52

76
77
78
79
80
81
82
83

84
85
86
87
88
89
90
91
92

93
94
95
96
97
98
99
100

1

2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

GND

AD22

AD23

C/BE3#

ES1988S

100-Pin LQFP

VCC

AD16

AD17

AD18

AD19

AD20

AD21

IRDY#

C/BE2#

FRAME#

GND

PAR

STOP#

TRDY#

C/BE1#

DEVSEL#

I2SCLK/SIRQ#/GPIO4

50
49

GD7/GPIO15

48

GD6/GPIO14

47

GD5/GPIO13

46

GD4

45

GD3/ECLK/VOLDN#

44

GD2/EDIN/VOLUP#

43

GD1/EDOUT

42

GD0

41

VCC

40

GND

39

CLKRUN#/ECS

38

AD0

37

AD1

36

AD2

35

AD3

34

AD4
AD5

33

AD6

32

AD7

31

C/BE0#

30

AD8

29
28

AD9

27

AD10

26

AD11

25

AD12

AD13

AD14

AD15

PCREQ#/SPDIFO/R0#/IDSEL

Figure 1 ES1988 Allegro Pinout Diagram

2 SAM0368-030601 ESS Technology, Inc.