MSM7584C Просмотр технического описания (PDF) - Oki Electric Industry

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Компоненты Описание

производитель

MSM7584C

π/4 Shift QPSK MODEM/ADPCM CODEC

Oki Electric Industry 

¡ Semiconductor

BLOCK DIAGRAM

MSM7584C

IFIN

PDN0

PDN1

PDN2

I+

I–

Q+

Q–

DIN

EXCK

DEN

DOUT

RESET

RO0 to RO1

SGM

SGCR

SGCT

AIN–

AIN+

GSX

PWI

AOUT–

AOUT+

VFRO

SAO

Phase detector

Delay detector

IFSEL

(From CR)

SL1

D

E SL2

C

AFC

DPLL

Judge

S

E

L

RXD

RXC

RXSC

VDDM

DGM

AGM

RPR

AFC/RCW

SLS

+1

–1 DC adjust

+1

–1 DC adjust

LPF

D/A

ATT

LPF

D/A

ATT

Root Nyquist

LPF

3.84M S

To D/A

E

L

TXCSEL

(From CR)

S/P

MAPPING

PLL

384k

1/10

BSTO

TXD

TXW

TXCI

TXCO

Control

register

To MODEM

To CODEC

2b

8b A/D

Conv.

RSGAIN

+

–

RSSI

Offset adjust

SGRS

To internal SG

inside modem

VREF

Serial

Register

Controller

R Receiver

Transmitter

T

–

+

RC

A/D

filter converter

BPF

150 W driving AMP

–

+

–1

Noise

generator

TONE

generator

Power detect

Voice

Detect

S

Com-

E

L

pander

ATT

ATT

ADPCM

CODER

P/S

&

S/P

+1

+1

RC

D/A

filter converter LPF

VDD

S

++

ATT

E

L

Expander

ADPCM

DECODER

From CR

SW3

SW4 SW5

SW1

SW2

DIO

WE

SSAADS

TAS

RWCK

CS1

CS2

VOXO

IS

PCMSI

PCMSO

BCLK

SYNC

PCMRI

PCMRO

IR

VOXI

RXMUTE

MLV2

MLV1

MLV0

2/57

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