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參數(shù)資料
| 型號： | MT9071 |
| 廠商： | Mitel Networks Corporation |
| 英文描述： | Quad T1/E1/J1 Transceiver(多端口 T1/E1/J1幀調(diào)節(jié)器（集成四個獨立幀調(diào)節(jié)器）) |
| 中文描述： | 四T1/E1/J1收發(fā)器（多端口的T1/E1/J1幀調(diào)節(jié)器（集成四個獨立幀調(diào)節(jié)器）） |
| 文件頁數(shù)： | 115/217頁 |
| 文件大?。?/td> | 686K |
| 代理商： | MT9071 |
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Preliminary Information
MT9071
115
Bit
Name
Functional Description
15
14
(0)
Not Used
AIS Select.
This bit selects the criteria on which the detection of a valid alarm indication signal
AIS=1 (see Table 109 - E1 Alarms & MAS Status - R Address Y12) is based. If zero, the criteria is
less than three zeros in a two frame period (512 bits). If one, the criteria is less than three zeros in
each of two consecutive double-frame periods (512 bits per double-frame).
Automatic Remote Alarm Indication (RAI) Operation.
This bit determines the source for the
Remote Alarm Indication bit (the A bit) of the transmit PCM30 signal (time-slot 0 bit 3 of NFAS
frames). If zero, the source for the A bit is the RAI status bit (see Table 107 - E1 CRC-4 Timers &
CRC-4 Local Status - R Address Y11), and consequently, will change automatically. That is, A=0
when basic synchronization has been acquired (RAI=0), and A=1 when basic synchronization has
not been acquired (RAI=1).
ASEL
(0)
13
ARAI
(0)
If the ARAI bit is set to one, the A bit is controlled through the TALM control bit (see this register).
Transmit Remote Alarm
. This bit is the source for the Remote Alarm Indication bit (the A bit) of
the transmit PCM30 signal (timeslot 0 bit 3 of NFAS frames) when the ARAI control bit (this
register) is set to one. The TALM bit is used to signal an alarm to the remote end of the PCM 30
link (one - alarm, zero - normal).
Transmit Alarm Indication Signal.
If one, an all ones signal is transmitted in all timeslots except
zero and 16. If zero, timeslots functions normally.
Transmit AIS Timeslot Zero.
If one, an all ones signal is transmitted in timeslot zero. If zero,
timeslot zero functions normally.
Transmit AIS Timeslot 16.
If one, an all ones signal is transmitted in timeslot 16. If zero, timeslot
functions normally.
Transmit E bits.
If CRC-4 synchronization is not achieved CSYNC=1 (see Table 105 - E1
Synchronization & CRC-4 Remote Status - R Address Y10), then this bit is transmitted on the
PCM30 link E-bits (E1 is bit 1 of timeslot 0, of NFAS frame 13; E2 is bit 1 of timeslot 0, of NFAS
frame15). If CRC-4 synchronization is achieved CSYNC=0, this control bit is ignored.
Transmit International Use Zero.
This bit is transmitted on the PCM 30 2048kb/s link in bit
position one of time-slot 0 of all the frame-alignment signal (FAS) frames when CRC-4 operation is
disabled CSYN=1 (see this register). The TIU0 bit is reserved for international use and should
normally be kept at one. If CRC-4 operation is enabled (CSYN=0), this bit is ignored.
Transmit International Use One.
This bit is transmitted on the PCM 30 2048kb/s link in bit
position one of timeslot 0 of all the Non-Frame Alignment Signal (NFAS) frames when CRC-4
operation is disabled CSYN=1 (see this register). The TIU1 bit is reserved for international use
and should normally be kept at one. If CRC-4 operation is enabled (CSYN=0), this bit is ignored.
CRC-4 Synchronization.
If zero, basic CRC-4 synchronization processing is activated. If one and
AUTC (see this register) is one, CRC-4 synchronization is disabled, and the first bits of time-slot 0
are used as international use bits and are programmed by the TIU0 and TIU1bits (see this
register).
Reframe.
A one-to-zero transition of this bit results in the execution of the reframing function (the
search for a new basic frame position).
Automatic CRC-interworking.
If zero, automatic CRC-interworking is activated. If one, it is
deactivated. See Section 5.0 E1 Interface and Framing for a detailed description.
CRC-4 Modification.
If one, the transmit CRC-4 remainder is modified when the device is in
transmit transparent mode TxTRS=1 (see Table 85 - E1 DL, CCS, CAS and Other Control - R/W
Address Y03). The received CRC-4 remainder is modified to reflect only the changes in the
transmit DL. If zero, time-slot 0 data from DSTi will not be modified in transmit transparent mode.
Table 79 - E1 Alarms and Framing Control - R/W Address Y00
12
TALM
(0)
11
TAIS
(0)
TAIS0
(0)
TAI16
(0)
TE
(0)
10
9
8
7
TIU0
(0)
6
TIU1
(1)
5
CSYN
(0)
4
REFRM
(0)
AUTC
(0)
CRCM
(0)
3
2
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| MT90710 | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:High-Speed Isochronous Multiplexer |
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| MT9072AB | 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:Octal T1/E1/J1 Framer |
| MT9072AV | 制造商:Microsemi Corporation 功能描述:FRAMER E1/J1/T1 3.3V 256BGA - Trays 制造商:Zarlink Semiconductor Inc 功能描述:FRAMER E1/J1/T1 3.3V 256BGA - Trays |
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