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參數(shù)資料
| 型號(hào)： | DPV34X |
| 英文描述： | Telecommunication IC |
| 中文描述： | 通信集成電路 |
| 文件頁(yè)數(shù)： | 1/2頁(yè) |
| 文件大?。?/td> | 84K |
| 代理商： | DPV34X |
Lucent Technologies DPV90DX,
DPV34DX, and DPV34X Data Pumps
1. V.90 and K56flex are supported by the DPV90DX device and
require 16K x 16 external SRAM (15 ns).
2. V.34 data modes are supported by the DPV90DX and DPV34DX
devices.
FEATURES
I
Data mode capabilities:
— ITU-T V.90
1
: 56000 bits/s—28000 bits/s
— K56flex
1
: 56000 bits/s—32000 bits/s
— ITU-T V.34
2
: 33600 bits/s—2400 bits/s
— V.32terbo, V.32bis, and fallbacks
I
FAX mode capabilities:
— ITU-T V.34: 33600 bits/s—2400 bits/s (TCM)
— ITU-T V.17: 14400 bits/s, 12000 bits/s,
7200 bits/s (TCM)
— ITU-T V.29: 9600 bits/s, 7200 bits/s (QAM)
— ITU-T V.27ter: 4800 bits/s, 2400 bits/s (DPSK)
— ITU-T V.21 Channel 2: 300 bits/s (FSK)
I
Integrated DPV data pump:
— Low-power 3.3 V device
— Integrated DSP and interface device
— ISA/microcontroller interface
— Call progress speaker driver
— Internal PLL allows low-speed crystal
— Extensive bit I/Os
I
Can be used with high-precision sigma-delta
codec CSP1034:
— Single 3.3 V supply for both analog and digital
portions of device
— Integrated programmable hybrid circuit
— Three additional host-controllable outputs
I
Caller identification (caller-ID) support for Bell202
and V.23 frequencies
I
Low-power sleep mode
I
Requires only a single 3.3 V supply
INTRODUCTION
The DPV family of data pump devices is
designed to serve embedded applications
where a separate modem microcontroller is not
required—e.g., where a suitable system con-
troller is already available to perform protocol
processing. The DPV family includes the follow-
ing three devices:
I
DPV34X. Supports V.34/V.17/V.29 (and
lower) FAX rates for FAX-only applications.
I
DPV34DX. Supports V.34 data as well as
V.34/V.17/V.29 FAX modes.
I
DPV90DX. Supports V.90/K56flex/V.34 data
and V.34/V.17/V.29 FAX. This device requires
16K x 16 external SRAM for V.90/K56flex
operation.
For traditional modem designs and other
applications requiring a complete integrated
embedded modem chip set, Lucent’s
Venus
chip set is a superior choice. The
Venus
device is
an integrated microcontroller and data pump
with an array of DTE interfaces to support a
variety of applications.
The DPV data pumps are software compatible
with the integrated
Venus
data pump from
both the DSP and microcontroller/host inter-
face viewpoints. Therefore, all DSP firmware
available for the
Venus
data pump to support
modes such as V.34 FAX, V.90, and K56flex can
be used without modification on the DPV
devices. Similarly, it is possible to use common
C source code for both
Venus
-based modems
and designs using a DPV data pump with an
external microcontroller.
The DPV90DX, DPV34DX, and DPV34X data
pumps are available in 128-pin TQFP packages.
These data pumps are used with the CSP1034
codec that is available in 44-pin MQFP and
48-pin TQFP packages.
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