MT9072AB Просмотр технического описания (PDF) - Zarlink Semiconductor Inc
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MT9072AB Datasheet PDF : 275 Pages
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MT9072
19.4 AC Electrical Characteristics - PCM30 and ST-BUS Frame Format
In both the transmit and receive directions, PCM30 LSB maps to ST-BUS LSB.
Data Sheet
FRAME
15
FRAME
0
2.0 ms
••••••••
FRAME
14
FRAME
15
FRAME
0
TIMESLOT
0
TIMESLOT
1
••••
TIMESLOT
30
TIMESLOT
31
125 µs
Most
Significant
Bit (First)
BIT
1
BIT BIT
2
3
Least
BIT BIT BIT BIT BIT Significant
4
5
6
7
8 Bit (Last)
(8/2.048) µs
Figure 74 - PCM 30 Format
CHANNEL
31 or 127
CHANNEL
0
125 µs
•••
CHANNEL
30 or 126
CHANNEL CHANNEL
31 or 127
0
Most
Significant
BIT
7
Bit (First)
BIT BIT BIT
6
5
4
BIT
3
BIT
2
BIT
1
BIT
0
Least
Significant
Bit (Last)
(8/2.048 or 8/8.192) µs
Figure 75 - ST-BUS Format
20.0 Applicable Specifications
Standard
Title
T1.102-1993
Digital Heirarchy_Electrical Interfaces
T1.231-1993
Layer 1 In-Service Digital Transmission Performance Monitoring
T1.403-1995
Network to Customer Installation Metallic Interfaces
T1.408-1990
ISDN Primary Rate- Customer Installation Metallic Interfaces
TR 62411-1990
Accunet T1.5 Service Description and Interface Specification
TA-TSY-000278 Issue1, 1985 Digital Data Systems(DDS)- T1 Digital Multiplexor(T1DM) Requirements
G.711
Pulse Code Modulation(PCM) of Voice Frequencies
Table 204 - Applicable Telecommunications Specifications
272
Zarlink Semiconductor Inc.
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