PCA1070T データシートの表示（PDF） - Philips Electronics

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PCA1070T

Multistandard programmable analog CMOS transmission IC

Philips Electronics 

Philips Semiconductors

Multistandard programmable analog

CMOS transmission IC

Product specification

PCA1070

I2C-BUS PROGRAMMING

Table 1 Programmable parameters

The following parameters (see Fig.1) can be programmed by means of a bit code via the I2C-bus:

SYMBOL

VDCx

ZSAx

ZSBx

ZSPx

DST

PDx

DPI

RRG

HPL

RFC

ZOSAx

ZOSBx

ZOSPx

RM

GRAx

GMAx

SM

DLT

PARAMETER

VSLPE

set impedance

DST

PD

DPI

RRG

maximum receiving level

load select

sidetone impedance

receiving mute

gain Gra

gain Gma

sending mute

threshold

BLOCK

line interface

line interface

line interface

line interface

line interface

power control

power control

power control

BTL receiving output

BTL receiving output

anti-sidetone

anti-sidetone

anti-sidetone

receiving mute

receiving prog-amp

sending prog-amp

sending mute

dynamic limiter

BITS

3

3

3

4

1

2

1

1

1

1

4

4

4

1

6

6

1

1

DESCRIPTION

DC voltage SLPE-VSS

Ra of set impedance

Rb of set impedance

fp (pole frequency) of set impedance

DC Start Time

Power-Down

Dial Pulse Input

Reset RinG detector

Hearing Protection Level

Resistive/Capacitive load

Rsa of sidetone impedance

Rsb of sidetone impedance

Cs of sidetone impedance

Receiving Mute

Gain receiving prog-amp

Gain sending prog-amp

Sending Mute

Dynamic Limiter Threshold

Table 2 Readable parameters

The following parameters (see also Fig.1) can be read as a bit code via the I2C-bus:

SYMBOL

PRES

LCx

PARAMETER

PRES

line current

BLOCK

power control

gain control

BITS

1

5

DESCRIPTION

PCA1070 Reset

Line Current

I2C interface

The I2C-bus interface (see “The I2C-bus and how to use it” 12NC: 9398 393 40011) is used to program the transmission

parameters and control functions.

Table 3 Device address

A6

A5

A4

A3

A2

A1

A0

R/W

0

1

0

0

0

1

0

X

All functions can be accessed by writing an 8-bit word to the PCA1070. In order to set up the PCA1070, a control

message consisting of the device address, a R/W bit, a subaddress byte and one or more data bytes must be written to

the PCA1070. If more than one data byte follows the subaddress, these bytes are stored in the successive registers by

the automatic increment feature.

1997 Jun 20

10

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