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ESS Technology, Inc.
SAM0341-041101
1
ESS Technology, Inc.
ES2839/ES2840
V.90/V.92 PCI HSP Modem Solution
Product Brief
DESCRIPTION
The ES2839/ES2840 is a high-performance, two-chip, host-
based modem solution that delivers high connectivity and
throughput, using a solid-state DAA instead of a traditional
transformer DAA. The chipset consists of the ES2839
Tele
Drive
modem chip and the ES2840, its accompanying high-voltage,
solid-state DAA device. Together, the ES2839 and ES2840
devices comprise a very low-cost modem solution for add-in
cards, desktops, and notebooks.
The ES2839 modem is capable of send/receive data and fax,
supports telephone answering machine (TAM), and is capable of
data/fax/voice call discrimination. With its built-in ACPI and
D3
cold
wake-on-ring support, the ES2839, plus the ES2840,
forms an ideal modem solution for notebooks and battery-
operated devices.
The ES2839 includes a PCI bus interface, codec, and low-
voltage, solid-state DAA. It also includes ADC and DAC
conversions of modem/voice signal data and provides the
interface and control logic needed to transfer data between its
serial I/O terminals and the PCI interface.
The ES2840, the high-voltage DAA device, handles the line-
monitoring and filtering functions, while also protecting the
signaling characteristics, performing all AC and DC functions,
and interfacing with the line side of tip and ring operations.
The ES2839/2840 modem solution meets all requirements for
Microsoft WHQL certification, as well as V.250, V.251, and V.253
commands
The ES2839 is available in a 100-pin low-profile quad flat pack
(LQFP) package. The ES2840 is available in an industry-
standard 20-pin super small outline pack (SSOP) package.
FEATURES
V.90/V.92 analog data/fax/TAM modem
Data mode capabilities:
—–
V.90/V.92: 56 kbps
—–
ITU-T V.34: 33.6 kbps and fallbacks
Fax mode capabilities:
—–
ITU-T V.17, V.29, V.27ter, and V.21ch2
—–
Group 3 (TIA/EIA-578 Class 1 and Class 2)
Requires minimum 166-MHz Pentium with MMX technology
PC99/PC2001-compliant with support for V.250, V.251, and
V.253 commands
V.80 (H.324 software-stack-compatible)
Buzzer generator feature generates oscillation on handshaking
Caller ID
Data/fax/voice call discrimination
Worldwide homologation
Compliant with ACPI 1.0 and PCI Power Management Interface
1.0, supporting the
D3
cold
wake-on-ring
16-bit ADC and DAC with built-in anti-aliasing and
reconstruction filters
Separate analog (5V) and digital (3.3V with 5V tolerance for
digital circuits) power supplies
Internal PLL, requiring a lower frequency crystal for 18.816-MHz
input
EEPROM interface for subsystem vendor ID
Supports Microsoft Windows
Unimodem V and TAPI
specifications
Supports Microsoft Windows
98/SE/ME/2000
Supports Microsoft Windows
NT 4.0
SYSTEM BLOCK DIAGRAM
Figure 1 shows the ES2839/ES2840 system block diagram.
Figure 1 ES2839/ES2840 System Block Diagram
EEPROM
PCI I/F
ES2839 HSP MODEM
PHONE
LINE
BUS
PCI AND
MINI PCI
VOLTAGE DAA
ES2840 HIGH-
XTAL
MC‘97
CODEC
LOW-VOLTAGE
DAA
EEPROM
I/F