MT9075AP datasheet(33/78 Pages) MITEL

33 / 78 page

Preliminary Information

MT9075A

4-161

Table 20 - National Use Bit Interrupt Mask Word

(Page 01H, Address 19H)

Bit

Name

Functional Description

TAIS

Transmit Alarm Indication Signal.

one,

all

ones

signal

transmitted.

TAIS=0

for

normal

operation.

TAIS0

Transmit AIS Time Slot Zero. If

one,

all

ones

signal

transmitted in time slot zero. If zero,

time slot zero functions normally.

TAIS16

Transmit AIS Time Slot 16. If one,

an all ones signal is transmitted in

time slot 16. If zero, time slot

functions normally.

4TE

Transmit E bits. When zero and

CRC-4

synchronization

achieved, the E-bits transmit the

received CRC-4 comparison results

to the distant end of the link, as per

G.704. That is, when zero and

CRC-4 synchronization is lost, the

transmit E-bits will be zero. If one,

and CRC-4 synchronization is lost

the transmit E-bits will be one.

REFRM

Reframe. If one for at least one

frame, and then cleared, the device

will initiate a search for a new basic

frame position. Reframing function

is activated on the one-to-zero

transition of the REFRM bit.

64KSEL

64 KHz Select. If one, a 64 KHz

signal

divided

down

from

the

extracted received 2048 kbit/sec.

clock is output on RxFP/Rx64KCK

(pin 47 in PLCC, 35 in MQFP). If

zero that pin outputs an 8 KHz

signal derived from the extracted

clock.

DSToDE DSTo Data Enable. If zero, DSTo is

enabled. If one, DSTo will be

tristated if one of the following

conditions exists: LIU loss of signal,

loss

terminal

frame

sync

(SYNC=1),

loss

CRC4

sync

(CRCSYN=1) or AIS.

CSToDE CSTo Data Enable. If zero, CSTo is

enabled. If one, CSTo will be

tristated if one of the following

conditions exists: loss of multiframe

sync (MFSYNC=1), or AIS16 =1

Table 19 - Transmit Alarm Control Word

(Page 01H, Address 16H)

Bit

Name

Functional Description

---

Unused.

PRBSO

PRBS

Counter

Overflow

Interrupt.

When

unmasked

(PRBSO

1),

interrupt

initiated

overflow

PRBS

counter (page 04H, address 10H)

from FFH to 0H. Interrupt vector =

00000010.

PRBSI

PRBS Interrupt. When unmasked

(PRBSI = 1), an interrupt is initiated

on a single PRBS detection error.

Interrupt vector = 00000010.

4SanibI

Changed

Sa Nibble Interrupt.

When unmasked (SanibI = 1), an

interrupt

generated

upon

detection of a change of state in any

of received Sa nibbles (nibble Sa5,

nibble Sa6, nibble Sa7 or nibble Sa8).

Interrupt vector = 00000010.

3SabitI

Changed Sa Bit Interrupt. When

unmasked (SabitI = 1), an interrupt

is generated upon detection of a

change of state in any of received

Sa bits (Sa5, Sa6, Sa7 or Sa8).

Interrupt vector = 00000010.

C8Sa6I

Eight

Consecutive

Sa6 Nibble

Interrupt. When unmasked (C8Sa6I

= 1), an interrupt is generated upon

detection of the eighth consecutive

Sa6 nibble with the same pattern.

Interrupt vector = 00000010.

1Sa6I

Changed Sa6 Nibble Interrupt.

When unmasked (Sa6I = 1), an

interrupt

generated

upon

detection of a change of state in

received

Sa6

nibbles.

Interrupt

vector = 00000010.

0Sa5I

Changed Sa5 Bit Interrupt. When

unmasked (Sa5I =1), an interrupt is

generated

upon

detection

change of state in the received Sa5

bit. Interrupt vector = 00000010.

MT9075AP Datasheet(PDF) 33 Page - Mitel Networks Corporation

MT9075AP Datasheet(HTML) 33 Page - Mitel Networks Corporation

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78

Datasheet Download

Link URL