BT8375 CONEXANT [Conexant Systems, Inc], BT8375 Datasheet - Page 96

• Manufacturer Part Number: BT8375
• Description: single chip transceivers for T1/E1 and Integrated Service Digital Network (ISDN) primary rate interfaces
• Manufacturer: CONEXANT [Conexant Systems, Inc]

2.0 Circuit Description
2.9 Transmit Line Interface Unit
Figure 2-33. TLIU Diagram
2-68
NOTE(S):
LBO filter block is not present in short haul devices: Bt8375 and Bt8376.
XRING
TCKO
XTIP
XOE
Analog Loopback
2.9 Transmit Line Interface Unit
The Transmit Line Interface Unit (TLIU), illustrated in
and N rail NRZ data to AMI pulses. The P and N rail NRZ data is generated by
the XMTR, converted to AMI bipolar pulses by the TLIU, and output on the
transmit tip and ring pins, XTIP and XRING. The TLIU has a configurable line
rate, pulse shape, Line Build Out (LBO), external termination resistor, and
transformer turns ratio.
filters, a Digital-to-Analog Converter (DAC), and a line driver.
The TLIU consists of a control circuit, a pulse template ROM, a set of LBO
DRV
DAC
Conexant
Filters
LBO
Shape
Pulse
Fully Integrated T1/E1 Framer and Line Interface
TPLL
Gen
AIS
8x
From JAT
To JAT
Figure
Bt8370/8375/8376
2-33, converts P
TPOS
TNEG
N8370DSE