MC145572FN Freescale Semiconductor, MC145572FN Datasheet - Page 233

• Manufacturer Part Number: MC145572FN
• Manufacturer: Freescale Semiconductor

Specifications of MC145572FN

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

MOTOROLA
OFF-CARD BUS
NOTES:
PROPRIETARY
1. MC68MH360 supports 32 HDLC channels.
2. MPC850DH supports 84 HDLC channels.
RAM
LOGIC
GLUE
FSC
ROM
Freescale Semiconductor, Inc.
CLK
For More Information On This Product,
MC68MH360
MPC850DH
Figure F–7. Multi–Line U Line Card
POWER PC
SCC #1
SCC #2
CORE
SCP
OR
PCM/IDL2 BUS
Go to: www.freescale.com
25 MHz
25 MHz
D CHANNEL
MC145572
D CHANNEL BUS
64 kbps
2.048 MHz
Create separate D channel data bus by OR’ing the DCHout pins
of all U transceivers. This bus shares the same clock and frame
sync as the PCM/IDL2 bus. The output of the OR gate is
connected to the Rx data pin of SCC1. The transmit data pin of
SCC1 is connected to all the DCHin pins of the U transceivers.
Use the integrated timeslot assigner on each MC145572 to
assign D and B channels to individual timeslots.
One MC145572 device can generate timing, others are slaves.
All MC145572s can share 20.48 MHz crystal.
SCP BUS
DCHout
PINS
OR"
MC145572
16 U-INTERFACE
TRANSCEIVERS
F–7