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ESS Technology, Inc.
SAM0316-041101
1
ESS Technology, Inc.
ES2838
V.90/V.92 PCI HSP Modem
Product Brief
DESCRIPTION
The ES2838 is a high-performance, single-chip, host-based
modem solution that delivers high connectivity and throughput
without the need for a dedicated DSP. With the addition of an
external transformer DAA, the ES2838
Tele
Drive
modem
chip provides a very low-cost modem solution for add-in cards,
desktops, and notebooks.
The ES2838 modem is capable of send/receive data and fax and
supports telephone answering machine (TAM), and is capable
data/fax/voice call discrimination. With its built-in ACPI and
D3
cold
wake-on-ring support, the ES2838 is an ideal modem
solution for notebooks and battery-operated devices.
The ES2838 includes a PCI bus interface and a codec. It also
includes ADC and DAC conversion of modem/voice signal data
and provide the interface and control logic needed to transfer
data between its serial I/O terminals and the PCI interface. The
ES2838 ADC and DAC operate synchronously so that data
reception at the ADC channel and data transmission from the
DAC channel occur during the same time interval.
The ES2838 modem solution meets all the requirements
Microsoft WHQL certification, as well as V.250, V.251, and V.253
commands.
The ES2838 is available in a 100-pin low-profile quad flat pack
(LQFP) 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
Compliance 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-tolerant input
pads) 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 ES2838 system block diagram.
Figure 1 ES2838 System Block Diagram
ES2838
PCI BUS
DAA
PHONE
LINE
SERIAL EEPROM
MINI-PCI
OR
V.90 HSP MODEM
TRANSFORMER