ESS ES2828S Datasheet
ES2828
Modem Analog Front End
ESS Technology, Inc.
DESCRIPTION
The ES2828 TeleDrive modem chip is an analog-front-end (AFE)
chip designed to work with ESS Technology modem DSPs and
audio-accelerator chips, as well as with system core-logic
chipsets, to offer the most versatile solution for modems only or
for complete audio-modem combinations. With the addition of an
external transformer DAA, the ES2828 modem AFE chip
provides a very low-cost, complete host-based modem solution.
The ES2828 modem provides high performance, high
connectivity, and high throughput. It integrates a low-pass
continuous anti-aliasing filter, a 16-bit resolution ADC, a 16-bit
DAC, a low-pass output-reconstruction filter, and an AC-Link
interface for core-logic chipset-based modem solution.
The ES2828 includes ADC and DAC signal processing channels
and the associated data controls for each channel. The two
channels operate synchronously, so that data reception at the
ADC channel and data transmission from the DAC channel occur
during the same time interval.
The ES2828 modem solution 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
modem solution for notebooks and battery-operated devices.
The ES2828 modem solution meets all the requirements for
Microsoft WHQL certification, as well as V.250, V.251, and V.253
commands
The ES2828 is available in an industry-standard 48-pin lowprofile quad flat pack (LQFP) package.
wake-on-ring support, the ES2828 is an ideal
cold
Product Brief
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)
• MC‘97-compliant modem codec supporting AC-Link compatible
with Rev 2.1 of the Intel™ AC‘97 specification
• Sigma-delta modulation codec
• Software reset through command register
• Caller ID
• Data/fax/voice call discrimination
• Worldwide homologation
• 16-bit ADC and DAC with built-in anti-aliasing and
reconstruction filters
• Compliance with ACPI 1.0 and PCI Power Management
Interface 1.0, supporting the D3
• Supports Microsoft Windows Unimodem V and TAPI
specifications
• Supports Microsoft Windows 98/SE/ME/2000
• Supports Windows NT 4.0
wake-on-ring
cold
BLOCK DIAGRAMS
Figure 1 shows the ES2828 block diagrams.
ESS AUDIO MODEM COMBO DESIGN
ES2828
ES1921 AC‘97
Audio Codec
ES2828
Modem AFE
DAA
DAA
HOST PCI
BUS
INTERFACE
CORE-LOGIC CHIPSET-BASED MODEM DESIGN
CORELOGIC
CHIPSET
AC-Link #1
ES1980
Audio Accelerator
AC-Link #2
AC-Link
ES1921 AC‘97
Audio Codec
Modem AFE
24.576 MHz
Figure 1 ES2828 Block Diagrams
ESS Technology, Inc. SAM0315-041101 1
ESS DSP MODEM DESIGN
(CHI BUS MODE)
HOST
PCI
BUS
INTERFACE
ES2898
TeleDrive
CHI BUS
ES2828
Modem AFE
4
DAA
18.816 MHz
PINOUT
Figure 2 shows the ES2828 pinout diagram.
ES2828 PRODUCT BRIEF
SO
SC/BITCLK
FS/SYNC
CKO
DVDD
XTALO
ID0
SDATA_IN
ID1
PWDN#
XTALI
RST#
VAUX
RING#/GPIO_0
CALLID/GPIO_1
GPIO_2
LCS/GPIO_3
GPIO_4
GPIO_5
DGND
OFFHK/GPIO_6
GPIO_7
GPIO_8
GPIO_9
36 35 34 33 32 31 30 29 27 2628
37
38
39
40
41
42
43
44
45
46
47
48
1
2 3 4 5 6 7 8 9 10 11 12
DPBX
ES2828S
48-PIN LQFP
DVDD
AGND
AGND
AGND
25
24
23
22
21
20
19
18
17
16
15
14
13
AUX-
AUX+
RXIN-
RXIN+
VCM
AVDD
SI/SDATA_OUT
DVDD
CTST
DGND
HCT
VCMX
AGND
TXTX+
VRBP
VREF
VCBP
ACLINK/GPIO_B
Figure 2 ES2828 Pinout Diagram
ES2828 PIN DESCRIPTION
Table 1 lists the ES2828 pin descriptions.
Table 1 ES2828 Pin Descriptions
Names Pin Numbers I/O Definitions
DPBX 1 I Digital PBX detection.
ACLINK/GPIO_B 2 I/O Bus strap pin. Default is CHI Bus (internal pulldown). To implement AC-Link mode,
use a 10k Ω pullup resistor.
DVDD 3, 23, 29 P 3.3V digital power.
2 SAM0315-041101 ESS Technology, Inc.
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