PSB4596 Просмотр технического описания (PDF) - Siemens AG

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PSB4596

Analog Line Interface Solution ALIS

Siemens AG 

PSB 4595 / PSB 4596

Analog Line Interface Solution

ALIS Implementation

chip coefficient RAM (CRAM) in order to program the filters. Transmit and receive data

is transferred to and from the data pump via the data interface.

4.2 ALIS AC Signal Flow Graph

ALIS architecture is based on digital filters. The data path through these filters is shown

in the next few diagrams. The filter concept also allows maximum autonomy between the

different filter blocks. Each filter block has a one-to-one correspondence with a specific

network element. Marked filters (grey) can be programmed by the user.

digital out

AR1

FRR

RFIX1

AR2

RFIX2

ADC

THFIX

IMFIX

ADC

DAA

Tip/

Ring

TH

IM

AX1

FRX

XFIX1

AX2

digital in

user-programmable block

fixed filter block fixed functional block

Definition:

Transmit:Digital-to-Analog

Receive :Analog-to-Digital

XFIX2

DAC

Legend:

DAA

AR1

FRR

RFIX1

AR2

RFIX2

ADC

THFIX

TH

IMFIX

IM

AX1

FRX

XFIX1

AX2

XFIX2

DAC

Data Access Arrangement, Fixed Part

Amplification Receive Filter 1

Equalization Receive

Receive Filter Fixed Part 1

Amplification Receive Filter 2

Receive Filter Fixed Part 2

Analog-to-Digital Converter

Transhybrid Filter Fixed Part

Transhybrid Filter

Impedance Filter Fixed Part

Impedance Filter

Amplification Transmit Filter 1

Equalization Transmit

Transmit Filter Fixed Part 1

Amplification Transmit Filter 2

Transmit Filter Fixed Part 2

Digital-to-Analog Converter

Figure 10 AC Signal Flow Graph

Semiconductor Group

21

Data Sheet 06.98

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