ADSP-21MOD870-100 datasheet, PDF

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ADSP-21MOD870-100: DescriptionIC 56 kbps DATA, 8 kbps FAX, MODEM, PQFP100, TQFP-100, Modem; CategoryWireless rf/communication Telecom circuit; File Size62KB，6 Pages; ManufacturerADI; Websitehttps://www.analog.com

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ADSP-21MOD870-100 Overview

IC 56 kbps DATA, 8 kbps FAX, MODEM, PQFP100, TQFP-100, Modem

ADSP-21MOD870-100 Parametric

Parameter Name	Attribute value
Is it Rohs certified?	incompatible
Maker	ADI
Parts packaging code	QFP
package instruction	TQFP-100
Contacts	100
Reach Compliance Code	compliant
ECCN code	EAR99
data rate	56 Mbps
Fax rate	8 kbps
JESD-30 code	S-PQFP-G100
JESD-609 code	e0
length	14 mm
Number of functions	1
Number of terminals	100
Package body material	PLASTIC/EPOXY
encapsulated code	LFQFP
Package shape	SQUARE
Package form	FLATPACK, LOW PROFILE, FINE PITCH
Peak Reflow Temperature (Celsius)	NOT SPECIFIED
Certification status	Not Qualified
Maximum seat height	1.6 mm
Nominal supply voltage	3.3 V
surface mount	YES
Telecom integrated circuit types	MODEM
Terminal surface	TIN LEAD
Terminal form	GULL WING
Terminal pitch	0.5 mm
Terminal location	QUAD
Maximum time at peak reflow temperature	NOT SPECIFIED
width	14 mm

ADSP-21MOD870-100 Preview

Internet Gateway Processor Software

ADSP-21mod870-110

INTRODUCTION

FEATURES

ISDN B-Channel HDLC

DATA Modulations

CCITT V.90 (30k–56k)

K56Flex™ (30k–56k)

ITU-T V.34: 33600 Bits/s–2400 Bits/s

CCITT V.32bis: 14400 Bits/s–7200 Bits/s

CCITT V.32: 9600 Bits/s, 4800 Bits/s

CCITT V.23

CCITT V.22/V.22bis: 2400, 1200, 600 Bits/s

CCITT V.21: 300 Bits/s

Bell 212A: 1200 Bits/s

Bell 103: 300 Bits/s

Start-Up Procedures:

ITU-T V.8

Error Correction and Data Compression:

CCITT V.42 Error Correction (LAPM and MNP2-4)

CCITT V.42bis Data and MNP Class 5 Compression

FAX Modem

V.17/V.29/V.27ter/V.21 Channel 2

T.30 Protocol

V.120

V.110

PPP Asynchronous Framing Support (RFC 1662)

Low Power

80 mW Typical Active

Low Power and Sleep Modes

High Density

100-Lead LQFP Package

On-Chip DS0/DS1 Interface

Full Function DMA Port

No External Memory Required

0.4 Square Inch per Complete Modem Port

3.3 V Supply

Fully Upgradable RAM-Based Architecture

Fast Download

Full Image in 5 ms

High Speed 16-Bit Port Link Bus Provides Simple

Interface Between Host and Modem Pool

The ADSP-21mod870-110 is a complete single chip. All data-

pump and controller functions are implemented on a single

0.4 square-inch chip. This modem package allows the highest

modem port density, while achieving the lowest power con-

sumption in a software upgradable platform.

The ADSP-21mod870-110 is designed for high density systems

such as remote access servers (see Figure 1). Its high perfor-

mance DSP core, large on-chip SRAM, TDM serials port and

16-bit DMA port provide efficient control and data communi-

cation with minimal chip count. The modem software provides

a number of data modulations, such as V.34, 56K bps PCM,

and ISDN with a software upgrade path to future standards,

and new applications, such as voice over network. The host

interface allows system access to modem statistics such as call

progress, connect speed and modulation parameters such as

retrain count and symbol rate.

ON-CHIP SRAM

The ADSP-21mod870-110 processor integrates 160K bytes of

on-chip memory. The modem datapump and controller soft-

ware, as well as data storage, are contained in the on-chip SRAM.

The SRAM cells are designed by Analog Devices. These cells

are optimized for high speed digital signal processing and low

power consumption. You can dynamically configure the ADSP-

21mod870 with software through the 16-bit DMA interface.

DMA INTERFACE

The 16-bit internal DMA port (IDMA port) provides transpar-

ent, direct access to the on-chip RAM of the ADSP-21mod870

processor. This high speed access to on-chip memory simplifies

control and data communication and system debug. Use the

16-bit DMA interface to dynamically configure the ADSP-

21mod870 with software.

K56Flex is a trademark of Rockwell International and Lucent Technologies.

REV. 0

Information furnished by Analog Devices is believed to be accurate and

reliable. However, no responsibility is assumed by Analog Devices for its

use, nor for any infringements of patents or other rights of third parties

which may result from its use. No license is granted by implication or

otherwise under any patent or patent rights of Analog Devices.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781/329-4700

World Wide Web Site: http://www.analog.com

Fax: 781/326-8703

ADSP-21mod870-110

IDMA

ADSP-

21mod870

SP0

T1, E1,

PRI, xDSL,

ATM

LINE

INTERFACE

CALL

CONTROL

IDMA

ADSP-

21mod870

SP0

IDMA

ADSP-

21mod870

SP0

IDMA

ADSP-

21mod870

SP0

IDMA

ADSP-

21mod870

SP0

IDMA

ADSP-

21mod870

SP0

IDMA

ADSP-

21mod870

SP0

IDMA

ADSP-

21mod870

SP0

HOST

(ADSP-2183)

PORT LINK

BUS

LAN OR

INTERNET

ADSP-21mod870 FUNCTIONS

V.34/56k MODEM

V.17 FAX

V.42, V.42bis, MNP2-5

DTMF DIALING

CALLER ID

HDLC PROTOCOL

HOST FUNCTIONS

MULTI-DSP CONTROL, OVERLAY

MANAGEMENT AND DATA TRANSFERS

Figure 1. ADSP-21mod870 Network Access System

SERIAL PORTS

Parallel Telco PCM Data Stream Architecture

The ADSP-21mod870 processor incorporates two complete

synchronous, double-buffered serial ports for serial communi-

cations. The serial ports interface directly to a time-division

multiplexed (TDM) 1544 kbps (T1) or 2048 kbps (E1) serial

stream, to an 8K sample/s data stream, or to an 8-bit companded

(64 kb/s) data stream (DS0). The serial ports operate under

modem software control.

SUPPORTED SYSTEM ARCHITECTURES

The parallel Telco PCM data stream architecture, shown in

Figure 3, provides a single bus interface for all data and control.

In this architecture, the modem pool may have a remote Telco

interface that provides a parallel data stream of Telco PCM data

to the DSP through the DSP’s DMA Port. An arbitrary number

of DSPs can be connected, through the DMA Port, to a Host

that provides the parallel data stream.

Note: The number of parallel DSPs is limited only by the soft-

ware loading constraints on the Host.

MEMORY I/F

DMA PORT

ADSP-

21mod870

The ADSP-21mod870-110 Internet Gateway Processor Soft-

ware supports two system architectures: serial

Telco PCM TDM

data stream and parallel Telco PCM data stream.

The two archi-

tectures are differentiated by the method of proving Telco

PCM data to the DSP Modem.

Serial Telco PCM TDM Data Stream Architecture

The serial Telco PCM TDM data stream architecture, shown

in Figure 2, is the most common architecture. In this architec-

ture, the modem pool may have a local Telco interface that

provides a serial TDM data stream of Telco PCM data to the

DSP through the DSP’s Serial Port. You can connect up to

24/32 DSPs, through the Serial Port, to a 24/32 channel serial

TDM data stream.

MEMORY I/F

DMA PORT

ADSP-

21mod870

SERIAL PORT

ADSP-

21mod870

HOST

ADSP-

21mod870

ADSP-

21mod870

TELCO PCM

I/F

Figure 3. Parallel Telco PCM Data Stream Architecture

ADSP-

21mod870

HOST

ADSP-

21mod870

TELCO PCM

I/F

ADSP-

21mod870

Figure 2. Serial Telco PCM TDM Data Stream Architecture

–2–

REV. 0

ADSP-21mod870-110

SOFTWARE INTERFACE

Modem Statistics

Analog Devices provides sample C code for the software inter-

face to the ADSP-21mod870-110. The software interface en-

compasses the following four areas—download, control interface,

data interface and modem statistics.

Download

Several modem statistics can be gathered through the IDMA

port. These statistics include call status, modulation in use,

connect rate, transmit and receive data rate, symbol rate, retrain

count, rate renegotiation count and others. Table II and Table

IV contain a complete listing of available modem statistics.

Modem Configuration

The IDMA port on the ADSP-21mod870-110 contains an

autoincrementing address generator. The host writes the start-

ing address of the transfer and then writes the first word of

data. After the first write, the IDMA address generator auto-

matically increments; the host writes the next data word and

the IDMA transfers that word to the next location in ADSP-

21mod870-110 memory.

The executable image contains code and data that must be

loaded into program and data memory. Program memory on

the ADSP-21mod870-110 is 24 bits wide, therefore two trans-

fers are used to load each word of program memory.

The host begins the download by asserting the

RESET

pin of

the ADSP-21mod870-110. The host then transfers all code and

data. All internal memory can be loaded in 5 ms.

Control Interface

The modem is configured by programming various parameters

through the IDMA port. Table III and Table V contain com-

plete lists of modem configuration parameters.

Table II. Shell Status

Reference #

SS. 0

SS. 1

SS. 2

SS. 3

Function

Product Number

Application Version

Application Type

Programmable Flag Data

Table III. Shell Parameters

The ADSP-21mod870-110 is controlled through two FIFOs in

DSP memory. The host sends a control event by writing to the

host-to-modem

FIFO. The ADSP-21mod870-110 posts events

to the host by writing into the

modem-to-host

FIFO.

Data Interface

Reference #

SP. 0

SP. 1

SP. 2

SP. 3

SP. 4

SP. 5

Function

Serial Port Tx Time Slot

Serial Port Rx Time Slot

Serial Port Configuration

Programmable Flag Control

Programmable Flag Data

Host Interrupt Count

All data transferred to and from the ADSP-21mod870-110

passes through word FIFOs located in internal memory on the

ADSP-21mod870. The FIFOs are accessed through a control

structure that contains a pointer to the start of the FIFO in

memory, the length of the FIFO in 16-bit words, a pointer to

the next address to be read, and a pointer to the next address to

be written. The transmit and receive FIFOs are 1024 bytes

deep. Example code providing primitives for accessing the

byte-FIFOs is available from Analog Devices. Table I shows an

example of a data FIFO.

Table I. FIFO Example

BASE

RD_ptr

INFO

WR_ptr

BASE + SIZE

REV. 0

–3–

ADSP-21mod870-110

Table IV. Modem Status

Table V. Modem Parameters

Reference # Function

MS. 0

MS. 1

MS. 2

MS. 3

MS. 4

MS. 5

MS. 6

MS. 7

MS. 8

MS. 9

MS. 10

MS. 11

MS. 12

MS. 13

MS. 14

MS. 15

MS. 16

MS. 17

MS. 18

MS. 19

MS. 20

MS. 21

MS. 22

MS. 23

MS. 24

MS. 25

MS. 26

MS. 27

MS. 28

MS. 29

MS. 30

MS. 31

MS. 32

MS. 33

MS. 34

MS. 35

MS. 36

MS. 37

MS. 38

MS. 39

MS. 40

MS. 41

MS. 42

MS. 43

MS. 44

MS. 45

MS. 46

MS. 47

MS. 48

Data Modulation State

SNR MSE Measure

Rx Level dBm

Tx Level dBm

Tx V.34 Symbol Rate

Rx V.34 Symbol Rate

Round Trip Delay

Telemetry Data Update

Constellation X

Constellation Y

Variable 2 X Pointer

Variable 2 Y Pointer

Variable 3 X Pointer

Variable 3 Y Pointer

Variable 4 X Pointer

Variable 4 Y Pointer

Data Modulation Monitor Retrain Local Count

Data Modulation Monitor Retrain Remote Count

Data Modulation Monitor Retrain Auto Count

Data Modulation Monitor Renegotiate Local

Count

Data Modulation Monitor Renegotiate Remote

Count

Data Modulation Monitor Renegotiate Auto

Count

Omc Carrier Family

Omc Disconnect Reason

Omc State

Omc Time

Omc Idle Time Start

Omc Data Protocol Time Start

Omc Initial Rx Data Rate

Omc Current Rx Data Rate

Omc Initial Tx Data Rate

Omc Current Tx Data Rate

Data Protocol

Data Protocol Compression

Data Protocol Rx HDLC Error Frame Count

Data Protocol Rx HDLC Frame Count

Data Protocol Tx HDLC Frame Count

Data Protocol Tx Data Frame Count

Data Protocol Tx Data Frame Retransmit Count

Data Protocol Rx Data Frame Count

Data Protocol Rx Data Frame Missing Count

Data Modulation Monitor Retrain Remote

Count

Data Protocol Call Tx Data Compressibility

Metric

Data Protocol Call Rx Data Compressibility

Metric

Data Protocol Call Tx Data Metric

Data Protocol Call Rx Data Metric

V.PCM Digital Attenuation

V.PCM Robbed Bit Mask

V.PCM Coding Law

Reference # Function

MP. 0

MP. 1

MP. 2

MP. 3

MP. 4

MP. 5

MP. 6

MP. 7

MP. 8

MP. 9

MP. 10

MP. 11

MP. 12

MP. 13

MP. 14

MP. 15

MP. 16

MP. 17

MP. 18

MP. 19

MP. 20

MP. 21

MP. 22

MP. 23

MP. 24

MP. 25

MP. 26

MP. 27

MP. 28

MP. 29

MP. 30

MP. 31

MP. 32

MP. 33

MP. 34

MP. 35

MP. 36

MP. 37

MP. 38

MP. 39

Omc Data Modulation Originate Enable

Dial Billing Delay Duration

Omc Data Modulation/Data Protocol

Maximum Start-Up Duration

Data Protocol Start Delay

Data Protocol Allowed Mask

Data Protocol Preferred Mask

Data Protocol Auto-Select Mask

Data Protocol Compression Mask

Data Protocol Cmn Binary Enable

Data Protocol Cmn HDLC Enable

Data Protocol LAPM to Sync

Data Protocol MNP Block Mode Enable

Data Protocol MNP Data Compression Select

Data Protocol MNP Header Optimize Enable

Data Protocol MNP Maximum Data Size

Data Protocol MNP Service Class

Data Protocol Disconnect Management Mode

Data Protocol Disconnect Management

Duration

Digital Data Modes

Pump Data Modes

Pump Tone Transmit Level

Pump Transmit Level

Pump V.34 Transmit Level

Data Modulation Carrier Detect Duration

Data Modulation Carrier Loss Disconnect

Timer Duration

Data Modulation Line Quality Monitor Mode

Data Modulation Options Mask

Data Modulation V.32 Rate Enable Mask

Data Modulation V.34 Data Rate Mask

V.PCM Maximum Power

V.PCM Reference Point

K56 RBS Maximum

K56 Tx Data Rate Maximum

K56 Tx Data Rate Minimum

DTE Interface Big Endian

PPP Rx Mode Enable

PPP Tx Mode Enable

PPP Detect Enable

PPP Rx ACCM

PPP Tx ACCM

–4–

REV. 0

ADSP-21mod870-110

ORDERING GUIDE

Part Number

ADSP-21mod870-110

Description

52 MIPS DSP with Modem

Software Unit License

Instruction Rate MHz

52.0

Package Description

100-Lead LQFP

Package Option

ST-100

REV. 0

–5–

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