ES2838 Datasheet, PDF (4/4 Pages) List of Unclassifed Manufacturers – V.90/V.92 PCI HSP Modem Product Brief

ES2838 PRODUCT BRIEF
Table 1 ES2838 Pin Descriptions (Continued)
Names
Pin Numbers I/O
Definitions
OFFHOOK
PF6
O Offhook output driving 5V.
63
O General-purpose programmable flag.
AVDD
65, 82
P Analog voltage pins [AVDD (5V)].
NC
66, 67, 69, 70, — No connect.
75, 76
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 Power to device during implementation of the D3_cold state required by PCI Power
Management Interface specification.
RING_IN
PF0
I RING_IN function, using a Schmitt trigger.
84
O General-purpose programable flag.
PME#
85
O Power management enable interrupt output to wake up the system.
VAUXP
86
I V_AUX support detection pin. V_AUXP pin is driven high to indicate that ACPI is supported
with D3_cold state. No support when driven low.
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.
ORDERING INFORMATION
Part Number
ES2838S
Description
V.90/V.92 PCI HSP Modem
Package
100-pin LQFP
ESS Technology, Inc.
48401 Fremont Blvd.
Fremont, CA 94538
Tel: [phone]
Fax: [phone]
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4
© 2001 ESS Technology, Inc. All rights reserved.
SAM0316-041101