RP56D Conexant Systems, Inc., RP56D Datasheet

RP56D

Manufacturer Part Number

RP56D

Description

QFP

Manufacturer

Conexant Systems, Inc.

Datasheets

1.RP56D.pdf (18 pages)

2.RP56D.pdf (18 pages)

Specifications of RP56D

Date_code

01+

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Introduction

The CONEXANT

Modem Data Pump (MDP) families support data/fax

modem, voice coding/decoding, optional full-duplex

speakerphone, and optional AudioSpan (Table 1). Low

voltage and small size support desktop applications.

Downloadable architecture allows upgrading of MDP code

from the host/DTE.

In V.90/K56flex mode (RP56), the MDP can receive data

at speeds up to 56 kbps from a digitally connected V.90-

or K56flex-compatible central site modem. These MDPs

take advantage of the PSTN which is primarily digital

except for the client modem to central office local loop and

are ideal for applications such as remote access to an

Internet service provider (ISP), on-line service, or

corporate site. The MDP can send upstream data at

speeds up to V.34 rates.

In V.34 data mode (RP56 and RC336), the MDP can

connect at the highest data rate the channel can support

from 33.6 kbps to 2400 bps with auto-fallback to V.32 bis.

In V.32 bis mode, the MDP can connect at the highest

data rate the channel can support from 14.4 kbps to 4800

bps with optional auto-fallback to lower rate modulations.

Internal HDLC support eliminates the need for an external

serial input/output (SIO) device in the DTE for products

incorporating error correction and T.30 protocols.

Voice mode includes an Adaptive Differential Pulse Code

Modulation (ADPCM) voice coder and decoder (codec).

The codec compresses and decompresses voice signals

for efficient digital storage of voice messages. The codec

operates at 28.8k, 21.6k, or 14.4k bps (4-bit, 3-bit, or 2-bit

quantization, respectively) with a 7.2 kHz or 8.0 kHz

sample rate.

A voice pass-through mode allows the host to transmit

and receive uncompressed voice samples in 16-bit linear

form at 7.2 kHz, 8.0 kHz, or 11.025 kHz sample rate, or in

8-bit A-Law/µ-Law PCM form at 8.0 kHz sample rate.

SP models support position-independent full-duplex

speakerphone (FDSP) operation using a dual internal

integrated analog circuit to interface with the telephone

line and the audio input/out (i.e., a headset, handset, or a

microphone with external speaker).

SP models also support AudioSpan (analog simultaneous

audio/voice and data) operation at a data rate of 4.8 kbps.

The MDP operates over the public switched telephone

network (PSTN) through the appropriate line termination.

RP56D, RP336D, and RP144D

Features

Downloadable MDP code from the host/DTE

2-wire full-duplex

2-wire half-duplex

Serial synchronous and asynchronous data

Parallel synchronous and asynchronous data

Parallel synchronous SDLC/HDLC support

In-band secondary channel (V.34 and V.32 bis)

Automatic mode selection (AMS)

Automatic rate adaption (ARA)

Digital near-end and far-end echo cancellation

Bulk delay for satellite transmission

ADPCM voice mode (7.2 kHz or 8.0 kHz)

Voice pass-through mode (7.2 kHz, 8.0 kHz, or 11.025 kHz)

Full-duplex speakerphone (SP models)

AudioSpan (SP models)

TTL and CMOS compatible DTE interface

Dynamic range: -9 dBm to -43 dBm

Adjustable speaker output to monitor received signal

DMA support interrupt lines

Transmit and receive (16+128)-byte FIFO data buffers

NRZI encoding/decoding

511 pattern generation/detection

V.8 and V.8 bis signaling

V.13 signaling

Diagnostic capability

+3.3V operation with +5V tolerant inputs

Power consumption:

Low profile, small footprint package

V.90 and K56flex (RP56 models)

V.34 (33.6 kbps) (RP56 and RP336 models)

V.32 bis, V.32, V.22 bis, V.22, V.23, and V.21

Bell 212 and 103

V.34 fax, V.17, V.33, V.29, V.27 ter, and V.21 ch 2

Bell 208

Short train option in V.17 and V.27 ter

Acoustic and line echo cancellation

Programmable microphone AGC

Microphone volume selection and muting

Speaker volume control and muting; room monitor

ITU-T V.61 modulation (4.8 kbps data plus audio)

Handset, headset, or half-duplex speakerphone

ITU-T V.24 (EIA/TIA-232-E) (data/control)

Microprocessor bus (data/configuration/control)

V.54 inter-DCE signaling

V.54 local analog and remote digital loopback

+5V analog operation

Normal Mode = 280 mW; Sleep Mode = 53 mW

100-pin PQFP

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