MT9076 Просмотр технического описания (PDF) - Mitel Networks

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производитель

MT9076

T1/E1/J1 3.3V Single Chip Transceiver

Mitel Networks 

MT9076

1.0 MT9076 Line Interface Unit (LIU).................................................................................. 17

1.1 Receiver .................................................................................................................................................17

1.2 Transmitter .............................................................................................................................................18

1.3 20 Mhz Clock..........................................................................................................................................21

1.4 Phase Lock Loop (PLL)..........................................................................................................................22

2.0 Clock Jitter Attenuation Modes.................................................................................... 23

2.1 Jitter Attenuator FIFO.............................................................................................................................24

2.2 IMA Mode ...............................................................................................................................................24

2.2.1 T1 Mode ......................................................................................................................................... 24

2.2.2 E1 Mode ......................................................................................................................................... 24

3.0 The Digital Interface ...................................................................................................... 24

3.1 T1 Digital Interface .................................................................................................................................24

3.2 Frame and Superframe Structure in T1 mode........................................................................................25

3.2.1 Multiframing .................................................................................................................................... 25

3.3 E1 Digital Interface .................................................................................................................................27

3.3.1 Basic Frame Alignment .................................................................................................................. 28

3.3.2 CRC-4 Multiframing in E1 mode..................................................................................................... 29

3.3.3 CAS Signaling Multiframing in E1 mode......................................................................................... 30

4.0 MT9076 Access and Control......................................................................................... 30

4.1 The Control Port Interface ......................................................................................................................30

4.2 Control and Status Register Access.......................................................................................................31

4.3 Identification Code..................................................................................................................................31

4.4 ST-BUS Streams....................................................................................................................................31

5.0 Reset Operation (Initialization)..................................................................................... 32

6.0 Transmit Data All Ones (TxAO) Operation .................................................................. 33

7.0 Data Link Operation ...................................................................................................... 33

7.1 Data Link Operation in E1 mode ............................................................................................................33

7.2 Data Link Operation in T1 mode ............................................................................................................33

7.2.1 External Data Link .......................................................................................................................... 35

7.2.2 Bit - Oriented Messaging ................................................................................................................ 35

8.0 Floating HDLC Channels .............................................................................................. 35

8.1 Channel Assignment ..............................................................................................................................35

8.2 HDLC Description...................................................................................................................................36

8.2.1 HDLC Frame structure ................................................................................................................... 36

8.2.2 Data Transparency (Zero Insertion/Deletion) ................................................................................. 36

8.2.3 Invalid Frames ................................................................................................................................ 36

8.2.4 Frame Abort.................................................................................................................................... 37

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