UPD72107 Datasheet, PDF (1/32 Pages) NEC – LAP-B CONTROLLER(Link Access Procedure Balanced mode)

DATA SHEET
MOS INTEGRATED CIRCUIT
µPD72107
LAP-B CONTROLLER
Link Access Procedure Balanced mode
The µPD72107 is an LSI that supports LAP-B protocol specified by the ITU-T recommended X.25 on a single
chip.
FEATURES
• Complied with ITU-T recommended X.25 (LAP-B84
edition)
HDLC frame control
Sequence control
Flow control
• ITU-T recommended X.75 supported
• TTC standard JT-T90 supported
• Optional functions
Option frame
Global address frame
Error check deletion frame
• Powerful test functions
Data loopback function
Loopback test link function
Frame trace function
• Abundant statistical information
• Detailed mode setting function
• Modem control function
• On-chip DMAC (Direct Memory Access Controller)
24-bit address
Byte/word transfer enabled (switch with external pin)
• Memory-based interface
Memory-based command
Memory-based status
Memory-based transmit/receive data
• MAX.4 Mbps serial transfer rate
• NRZ, NRZI coding
ORDERING INFORMATION
Part Number
µPD72107CW
µPD72107GC-3B9
µPD72107L
Package
64-pin plastic shrink DIP (750 mils)
80-pin plastic QFP (14 x 14 mm)
68-pin plastic QFJ (950 x 950 mils)
The information in this document is subject to change without notice.
Document No. S12962EJ5V0DS00 (5th edition)
Date Published October 1998 N CP(K)
Printed in Japan
©
1998