ESS ES2838S Datasheet
ES2838
V.90/V.92 PCI HSP Modem
ESS Technology, Inc.
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 TeleDrive 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
wake-on-ring support, the ES2838 is an ideal modem
D3
cold
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.
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)
• 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
• 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
wake-on-ring
cold
SYSTEM BLOCK DIAGRAM
Figure 1 shows the ES2838 system block diagram.
MINI-PCI
OR
PCI BUS
ESS Technology, Inc. SAM0316-041101 1
ES2838
V.90 HSP MODEM
SERIAL EEPROM
Figure 1 ES2838 System Block Diagram
TRANSFORMER
DAA
PHONE
LINE
PINOUT
Figure 2 shows the ES2838 pinout diagram.
VRE F
VCM
NC
75747372717069686766656463626160595857565554535251
NC
AGND
AGND
TXN
TXP
AGND
AVDD
VAUX
RING_IN/PF0
PME#
VAUXP
RST#
INTA#
VDD
PCICLK
GND
AD31
AD30
AD29
AD28
AD27
AD26
AD25
AD24
VDD
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
2345678
PF1
NC
NC
RXN
RXP
AVDD
AGND
NC
NC
GND
OFFHOOK/PF6
GND
OSCI
OSCO
ES2838S
100-Pin LQFP
9
101112131415161718192021222324
ES2838 PRODUCT BRIEF
VDD
CUR LIM#
DPBX #
DSPK /PF11
VDD
COMPLX#
CLKRUN#
GND
50
PF5
49
PF4
48
LCS/PF3
47
PF2
VDD
46
45
SECS
SECLK
44
SEDI
43
42
SEDO
GND
41
40
AD0
AD1
39
AD2
38
AD3
37
36
AD4
AD5
35
AD6
34
AD7
33
VDD
32
31
CBE0#
30
AD8
AD9
29
AD10
28
AD11
27
26
AD12
25
GND
IDSEL
CBE3#
AD21
AD22
AD23
AD18
AD19
AD20
VDD
AD16
AD17
GND
CBE2#
IRDY#
TRDY#
FRAME#
PAR
GND
AD14
AD15
CBE1#
STOP#
AD13
DEVSEL#
Figure 2 ES2838 Pinout Diagram
2 SAM0316-041101 ESS Technology, Inc.
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