Product spec and feature
Service Manual
2-18
Samsung Electronics
Block Diagram
Signal Transition of DAA Solution
Line Interface Signal of Tel Line and LSD is Analog Signal. There are a A/D and a D/A Converter in the LSD,
so Analog Signal from Tel Line is converted in Digital through a A/D Converter in the DAA and transferred to
the SSD by the DIB Transformer. Digital Signal from the SSD is converted to Analog by a D/A Converter in
the DAA and transferred to Tel Line.
(Modem)
(SiliconDAA)
Si2435
SSD
System
Side
Device
DSP
Transformer
Transformer
Tel Line
Ext Line
Si3018
LSD
Line
Side
Device
Digita
l
1
01
Analo
g
Si2435
SSD
System
Side
Device
DSP
Transformer
Transformer
Tel Line
Ext Line
Si3018
LSD
Line
Side
Device
Digita
l
1
01
Analo
g
Ρ
Fax
Implemented by based on the SiLab DAA (Data Access Arrangement) Solution, and is roughly composed
of two Chip Solution
• Si2435 (Modem) A Modem Chip which embeds SSD (System Side Device) for interfacing between LSD
and DIB of Si2435 Core
• Si3018 (DAA) A LIU (Line Interface Unit) Chip which is controlled by SSD and satisfies each PSTN
Requirements by modulating internal Configuration with connecting Tel Line.
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