Specifications

Chapter 1 Introduction Installation and Operation Manual
1-8 Functional Description ASMi-52CD Ver. 1.0
1.3 Functional Description
Following is a functional description of ASMi-52CD (see Figure 1-5 ).
SHDSL
Line
Interface
2/4-Wire
Line
Digital Data
to DTE
Digital Data
to DTE
DTE
Interface
DTE
Interface
Administration of
Data Transfer
Between Modems
CPU
Modem
Controller
Modem Glue
Logic and BERT
Data
Data
Remote
Control
Data
LEDs
Figure 1-5. ASMi-52CD Block Diagram
The ASMi-52CD modem consists of the following major modules:
SHDSL Interface Module – This module translates the received and transmitted
data from the two lines to the two DTE interfaces.
Modem Glue– This module processes the data from/to the SHDSL interface
module.
Administration Data Transfer Module – This module manages the data transfer
between modems on both sides of the line.
Modem Controller – This module, based on a MC68302 microprocessor, controls
the ASMi-52CD operation.
LEDs Module – This module provides modem status information via LED indicators
on the front panel.
Digital Interfaces – This module prepares the digital data coming from the DTE
into a data stream for the modem glue logic. In addition it translates the data
from the modem glue logic into digital data to be sent to the DTE.