MT9079AC datasheet(44/54 Pages) MITEL

tên linh kiện	MT9079AC

Giải thích chi tiết về linh kiện	CMOS ST-BUS??FAMILY Advanced Controller for E1

PDF	54 Pages

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nhà sản xuất	MITEL [Mitel Networks Corporation]

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44 / 54 page

MT9079

4-280

receive span will not be masked on the transmit span

even though the maintenance channel has been

modified.

The RxMF signal must be associated with the CRC-4

multiframe (control bit MFSEL = 1), and RxMF of the

receive trunk must be connected to TxMF of the

transmit trunk. The data delay time (DSTo to DSTi)

and the TxMF to RxMF delay must be equal.

Therefore, a m + 1 frame delay circuit is added to the

TxMF to RxMF connection (where: m is the delay in

basic frames through the Digital Cross-Connect

Matrix).

It should be noted that in the TxMF to RxMF

operation is only valid when the C4i/C2i input of

MT9079 devices is driven by a C4 clock signal.

Fibre Interface

Figure 16 shows how the MT9079 can be employed

to a fibre optic transmission system. The MT9079

control bits COD1-0 must be set to 01 to select

Non-Return to Zero (NRZ) operation. NRZ data is

manchester encoded and converted to a light signal,

which is transmitted down the fibre optic cable. On

the receive side the light signal is detected and

converted to an electrical signal, which is passed to

a manchester decoder. The manchester decoder

generates the receive NRZ signal and a receive

clock.

MT9079AC bảng dữ liệu(PDF) 44 Page - Mitel Networks Corporation