PSB21911 View Datasheet(PDF) - Infineon Technologies

Part Name

Description

MFG CO.

PSB21911

ICs for Communications ISDN Echocancellation Circuit for Terminal Applications IEC-Q TE

Infineon Technologies 

PSB 21911

PSF 21911

Operating Modes

Table 3 Test Modes

Test-Mode

Master-Reset1)

Send Single-Pulses2)

Data-Through3)

Bit TM1/

Pin RES

0

1

0

Bit TM2/

Pin TSP

0

1

1

Normal

1

0

1) Used for Quiet Mode and Return Loss measurements

2) Used for Pulse Mask measurements

3) Used for Insertion Loss, Power Spectral Density and Total Power measurements

Table 4 DOUT Driver Modes

Mode

Pin Pin Pin /

RES 1) TSP 2) Bit

DOD

Pin DOUT Output Driver

Value DOUT in

active time

slot

DOUT in

passive time

slot

Pin-Reset

0

0

x

0

low

int. pull-up

1

int. pull-up

Normal

(Tristate)

1

0

0

0

low

1

high

high Z

Normal

1

0

1

0

low

(Open Drain 3))

1

floating

floating

1) In stand-alone mode and µP mode

2) Only in stand-alone mode. In µP mode the output driver of pin DOUT is selected via bit DOD in the ADF2

register

3) External pull-up resistors required (typ.1 kΩ)

Semiconductor Group

27

11.97

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