MT9079 Просмотр технического описания (PDF) - Mitel Networks

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MT9079

CMOS ST-BUS™ FAMILY Advanced Controller for E1

Mitel Networks 

MT9079

channel positions of the ST-BUS and PCM 30

interface. See Tables 13, 14, 16 and 17 for CAS bit

positions in CSTo1 and CSTi2.

Reset Operation (Initialization)

The MT9079 can be reset using the hardware

RESET pin (see pin description for external reset

circuit requirements) or the software reset bit RST

(page 1, address 11H). During the reset state, TxA

and TxB are low. When the device emerges from its

reset state it will begin to function with the default

settings described in Table 3.

Function

Port Selection

Mode

ST-BUS Offset

Loopbacks

E8Ko

Transmit FAS

Transmit non-FAS

Transmit MFAS (CAS)

Data Link

CRC Interworking

Code Insert/Detect

Signalling

ABCD Bit Debounce

Interrupts

RxMF Output

Error Insertion

Coding

Tx/Rx Buffers

Counters

Status

as per pins S/P & ST/SC

Termination

00000000*

Deactivated

Deactivated

Cn0011011

1/Sn1111111

00001111

Deactivated

Activated

Deactivated

CAS (CSTi2 & CSTo1)

Deactivated

Interrupt Mask Word Zero

unmasked, all others

masked; interrupts not

suspended

Signalling Multiframe

Deactivated

10*

Deactivated

Random

Table 3 - Reset Status

*cleared by the RESET pin, but not by the

RST control bit.

See the Applications section for the MT9079

initialization procedure.

4-246

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