bt8970 Mindspeed Technologies, bt8970 Datasheet - Page 9

• Manufacturer Part Number: bt8970
• Description: Single-chip Hdsl Transceiver
• Manufacturer: Mindspeed Technologies

1.1 Functional Summary
The Bt8970 HDSL transceiver is an integral component of Rockwell’s HDSL chipset. System performance of
the chipset allows 2-pair T1, 2-pair E1, and 3-pair E1 transmission. The major building blocks of a typical
HDSL T1/E1 terminal are shown in
Figure 1-1. HDSL T1/E1 Terminal
clock interface, a microcomputer interface, and a test and diagnostic interface.
connections within and between each of these functional blocks.
100101B
Transmit
Receive
The Bt8970 comprises five major functions: a transmit section, a receive section, a timing recovery and
T1/E1
T1/E1
Line
Line
(T1 Only)
Bt8069B
Interface
Line
Unit
Preliminary Information/Conexant Proprietary and Confidential
E1 Framer
Bt8360/70
T1 Framer
Bt8510
1.0 System Overview
1
or
Figure
Bt8953A
Channel
1-1.
T1/E1
HDSL
Unit
Conexant
Transceiver
Transceiver
Transceiver
Bt8970
Bt8970
Bt8970
OPTIONAL THIRD PAIR
Figure 1-2
Transformer
Transformer
Transformer
Hybrid
Hybrid
Hybrid
and
and
and
details the
HDSL
Twisted
Pair
HDSL
Twisted
Pair
HDSL
Twisted
Pair
100101_002
1-1