MC145572PB Freescale Semiconductor, MC145572PB Datasheet - Page 20

• Manufacturer Part Number: MC145572PB
• Manufacturer: Freescale Semiconductor

Specifications of MC145572PB

• Number Of Line Interfaces: 1
• Control Interface: HDLC
• Lead Free Status / Rohs Status: Not Compliant

2–2
HOST BUS
MC145488
MC68302
SYSTEM
DDLC
ROM
RAM
MPU
IMP
The NT1 converts the 2–wire U–interface to the 4–wire S/T–interface as shown. By combining an
MC145572 with a Motorola MC145574 S/T–interface transceiver, an NT1 can be readily implemented.
Also shown is a highly integrated U–interface ISDN terminal, designated NT1/TE1, which implements
a complete voice and data terminal with a U–interface for immediate and cost effective access to
the ISDN. The MC145572 is shown interfaced to the M68000 core–based MC68302 Integrated Multi-
protocol Processor (IMP), which handles layers 2 – 7 of the OSI reference model. Voice is supported
with a conventional codec–filter device, such as the MC14LC5480.
The network is completed with a TA and an S/T–interface ISDN terminal (TE1). Two different architec-
tures are shown: the TA is implemented with the MC145488 Dual Data Link controller and a host
MCU system, and the TE1 is shown implemented with the MC68302 IMP.
SCP
SCP
IDL
IDL
TE1
TA
MC14LC5480
MC14LC5480
MC145574
MC145574
CODEC
CODEC
CHIP
CHIP
S/T
S/T
Freescale Semiconductor, Inc.
Figure 2–2. MC145572 Typical ISDN Applications
For More Information On This Product,
Go to: www.freescale.com
MC145572
MC145574
MC68302
ROM
CHIP
RAM
IMP
S/T
NT1/TE1
SCP
NT1
IDL
GCI
MC14LC5480
MC145572
MC145572
CODEC
CHIP
CHIP
U
U
U
U
SWITCHING EQUIPMENT
MC145572
MC145572
CHIP
CHIP
LT
LT
U
U
MOTOROLA
SCP
IDL
SCP
IDL