4

© 2001 ESS Technology, Inc. All rights reserved.

SAM0316-041101

ES2838 PRODUCT BRIEF

No part of this publication may be reproduced, stored in a

retrieval system, transmitted, or translated in any form or

by any means, electronic, mechanical, manual, optical, or

otherwise, without the prior written permission of ESS

Technology, Inc.

ESS Technology, Inc. makes no representations or

warranties regarding the content of this document.

All specifications are subject to change without prior

notice.

ESS Technology, Inc. assumes no responsibility for any

errors contained herein.

TeleDrive is a registered trademark of ESS Technology, Inc.

(P) U.S. patents pending.

All other trademarks are owned by their respective

holders and are used for identification purposes only.

ESS Technology, Inc.

48401 Fremont Blvd.

Fremont, CA 94538

Tel: (510) 492-1088

Fax: (510) 492-1898

ORDERING INFORMATION

OFFHOOK

63

O

Offhook output driving 5V.

PF6

O

General-purpose programmable flag.

AVDD

65, 82

P

Analog voltage pins [AVDD (5V)].

NC

66, 67, 69, 70,

75, 76

—

No connect.

AGND

68, 77, 78, 81

G

Analog ground.

RXN

71

I

Codec analog differential negative input. The DC level is Vcm, and the full-scale input is

either 0.22 Vp-p ±5% or 1.1 Vp-p±5%, depending on the gain setting.

RXP

72

I

Codec analog differential positive input. The DC level is Vcm, and the full-scale input is

either 0.22 Vp-p ±5% or 1.1 Vp-p±5%, depending on the gain setting.

VREF

73

O

Voltage reference bypass. Has a range of 1.2356V±5%. Bypass to AGND with 0.1-

µF

ceramic chip capacitor parallel with 10-

µF tantalum capacitor.

VCM

74

O

Common mode voltage bypass. Has a range of 2.16V±5%. Bypass to AGND with 0.1-

µF

ceramic chip capacitor parallel with 10-

µF tantalum capacitor.

TXN

79

O

Codec negative analog output. The DC level is Vcm, and the full-scale ac output is 2.8V

p-p±5%. The maximum loading is 1k

Ω in parallel with 20 pF for modem applications.

For audio applications with low-impedance load, the maximum distortion-free (THD

<–60 db) current is 10 mA rms.

TXP

80

O

Codec positive analog output. The DC level is Vcm, and the full-scale ac output is 2.8V

p-p±5%. The maximum loading is 1k

Ω in parallel with 20 pF for modem applications.

For audio applications with low-impedance load, the maximum distortion-free (THD

<–60 db) current is 10 mA rms.

VAUX

83

P

Management Interface specification.

RING_IN

84

I

RING_IN function, using a Schmitt trigger.

PF0

O

General-purpose programable flag.

PME#

85

O

Power management enable interrupt output to wake up the system.

VAUXP

86

I

RST#

87

I

Active-low ES2838 reset input.

INTA#

88

O

Interrupt request, active-low. The level triggered interrupt pin dedicated to servicing

internal device interrupt sources.

PCICLK

90

I

System bus clock input.

Table 1 ES2838 Pin Descriptions (Continued)

Names

Pin Numbers

I/O

Definitions

Part Number

Description

Package

ES2838S

V.90/V.92 PCI HSP Modem

100-pin LQFP