PCD5096 datasheet(40/52 Pages) PHILIPS

40 / 52 page

1997 Jan 22

Philips Semiconductors

Preliminary speciﬁcation

Universal codec

PCD5096

Table 40 Control registers for conference call between one PSTN line and two IOM buffers

13.3

Conference call between two PSTN lines and one IOM buffer

Another configuration for conference call is between two PSTN lines and one IOM buffer, as shown in Fig.24. Tables 41,

42 and 43 show possible settings for the DSP parameters, the IOM control table and the control registers in the

PCD5096.

SDR

ADDRESS

(HEX)

PARAMETER NAME

VALUE

(HEX)

FUNCTION

codec control

0003

Codec 1 ON, Codec 2 OFF

IOM control

0004

IOM slave mode, 768 kbits/s

gain settings A/D and D/A paths

00D0

A/D gain = +9 dB, D/A gain = 0 dB in Codec 1

VREF1, VREF2 settings

A0A0

default setting for VREF1 and VREF2

DSP modes

0008

channel a in speech and tone mode

Fig.24 Conference call between two PSTN lines and one IOM buffer.

handbook, full pagewidth

MBH880

PPa

RADIO

CIRCUIT

IOM-2

LLa

LLb

CCa

a/b

PCD5093

PCD5096

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