PCD5096 datasheet(39/52 Pages) PHILIPS

39 / 52 page

1997 Jan 22

Philips Semiconductors

Preliminary speciﬁcation

Universal codec

PCD5096

Table 38 DSP parameters for conference call between one PSTN line and two IOM buffers

Table 39 IOM control table for conference call between one PSTN line and two IOM buffers

SDR

ADDRESS

(HEX)

PARAMETER NAME

VALUE

(HEX)

FUNCTION

LLa_IOM1

LLb_IOM1

5054

not used

LLa_LSW

LLb_LSW

FF00

LLa analog line interface (LLx_IOM1 not used)

LLa_LEC

LLb_LEC

FF00

Local Echo Canceller ON in Codec 1

LLa_NES

LLb_NES

2D00

Network Echo Suppressor (9 dB attenuation) in Codec 1

LLa_AGC

LLb_AGC

FF00

Automatic Gain Control ON in Codec 1

LLa_TXV

LLb_TXV

2000

Transmit Volume set to 0 dB in Codec 1

LLa_ISW

LLb_ISW

0000

8-bit A-law PCM data

LLa_IOM2

LLb_IOM2

484C

not used

LLa_SMU2

LLb_SMU2

0000

Soft Mute OFF

LLa_AVR

LLb_AVR

0000

Automatic Volume Control OFF

LLa_RXV

LLb_RXV

2000

Receive Volume set to 0 dB in Codec 1

LLa_PST

LLb_PST

0000

Site Tone OFF

LLa_TST

LLb_TST

0000

Tone Site Tone OFF (LLx_TOGx and LLx_TOVx not used)

LLa_TOV1

LLb_TOV1

4040

Tone Volume for Tone 1 set to 0 dB

LLa_TOV2

LLb_TOV2

4040

Tone Volume for Tone 2 set to 0 dB

LLa_TOG1

7ECE

Tone 1 to Codec 1

LLa_TOG2

7E8A

Tone 2 to Codec 1

LLb_TOG1

7E37

Tone 1 to Codec 2

LLb_TOG2

7DD2

Tone 2 to Codec 2

CCa_CNC

reserved

0900

conference call between Codec 1 and Codec 2 IOM buffers

(8 bit A-law PCM data)

CCa_IOM3

CCa_IOM4

4044

conference call IOM buffer 1 at address 40H

conference call IOM buffer 2 at address 44H

CCa_SMU3 CCa_SMU4

0000

soft mute off

SDR

ADDRESS

(HEX)

PARAMETER NAME

VALUE

(HEX)

FUNCTION

slot 0 control

0070

IOM slot 0 uses buffer at address 40H

slot 1 control

0071

IOM slot 1 uses buffer at address 44H

22 to 3F

slot 2 to slot 32

0000

slots 2 to 32 inactive

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