MT8926 Zarlink Semiconductor, MT8926 Datasheet - Page 2

• Manufacturer Part Number: MT8926
• Description: T1 Performance Monitoring Adjunct Circuit (PMAC)
• Manufacturer: Zarlink Semiconductor

Features
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Applications
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SEMICMF.019
RESET
CSTi0
CSTi1
DSTi0
DSTi1
ANSI T1.403 and T1.408 Performance
Monitoring and Maintenance Functions
Operates in conjunction with Mitel's T1/ESF
framer circuits (MT8976/77 and MH89760B)
D3/D4 (SF), and ESF modes of operation
One and two second timers
Supports bit-oriented and message-oriented
data transfer over the Facility Data Link (FDL)
ESF and D3/D4 Yellow Alarms, Alarm
Indication Signal and Loss of Signal Indication
Framing Error, CRC Error and Bipolar Violation
Error counters
Alarm interrupts and counter overflow interrupts
T1 line performance data collection
CSU performance monitoring
ISDN Primary Rate maintenance controller
CSTo
DSTo
FDLi
E8Ki
IRQ
C2i
F0i
Loopback
Payload
Interface
ST-BUS
Control
& Line
Receive BOM Register &
RAI Debounce
Transmit BOM
8 Bit CRC
Register
Counter
Timer
Registers
Figure 1 - Functional Block Diagram
Snap-
Shot
CSI
ISO-CMOS ST-BUS
DS5718
Description
The MT8926 Performance Monitoring Adjunct Circuit
(PMAC) interworks with Mitel's MT8976/77 and
MH89760B to provide performance monitoring data,
alarms and T1 maintenance features.
It meets the performance monitoring and maintenance
requirements of ANSI T1.403 and T1.408, and also
supports Channel Service Unit (CSU) requirements.
SEI
FSI
BSI
8 Bit BPV
4 Bit FE
Counter
Counter
4 Bit SE
Counter
MT8926AE
MT8926AP
TM
T1 Performance Monitoring
Family
Ordering Information
-40
Adjunct Circuit (PMAC)
BPV Detector
Recovery,
o
AIS/LOS
Detector
C to +85
B8ZS
28 Pin Plastic DIP
28 Pin PLCC
Issue 3
E8K/FDL
Loopback
Integrator
Extractor
Detector
Framer,
SE/FE
Mux
Line
FDL
o
C
Data Sheet
MT8926
July 1993
FDLo
E8Ko
V
V
RxA
RxB
ECLK
1SEC
DD
SS
1