MT9075AL datasheet(39/78 Pages) MITEL

39 / 78 page

Preliminary Information

MT9075A

4-167

Bit

Name

Functional Description

BPVE

Bipolar Violation Error Insertion.

A zero-to-one transition of this bit

inserts a single bipolar violation

error into the transmit PCM 30 data.

A one, zero or one-to-zero transition

has no function.

CRCE

CRC-4 Error Insertion. A zero-to-

one transition of this bit inserts a

single CRC-4 error into the transmit

PCM 30 data. A one, zero or one-to-

zero transition has no function.

FASE

Frame Alignment Signal Error

Insertion. A zero-to-one transition

of this bit inserts a single error into

the time slot zero frame alignment

signal of the transmit PCM 30 data.

A one, zero or one-to-zero transition

has no function.

NFSE

Non-frame

Alignment

Signal

Error

Insertion.

zero-to-one

transition of this bit inserts a single

error into bit two of the time slot zero

non-frame alignment signal of the

transmit PCM 30 data. A one, zero

or one-to-zero transition has no

function.

LOSE

Loss of Signal Error Insertion. If

one, the MT9075A transmits an all

zeros signal (no pulses) in every

PCM 30 time slot. If zero, data is

transmitted normally.

PERR

Payload Error Insertion. A zero-to-

one transition of this bit inserts a

single error in the transmit payload.

A one, zero or one-to-zero transition

has no function.

---

Unused.

DBNCE

Debounce Select. This bit selects

the debounce period (1 for 14

msec.; 0 for no debounce). Note:

there may be as much as 2 msec.

added to this duration because the

state

change

the

signalling

equipment is not synchronous with

the PCM 30 signalling multiframe.

Table 28 - Error and Debounce Selection Word

(Page 02H, Address 10H)

Bit

Name

Functional Description

7-3

Unused.

LOS/LOF Loss of Signal or Loss of Frame

Selection. If one, pin LOS (pin 61 in

PLCC, 57 in MQFP) will go high

when a loss of signal state exits

(criteria as per LLOS status bit on

page 03H address 18H). If low, pin

LOS will go high when either a loss

of signal (LLOST =1) or a loss of

basic frame alignment state exits

(bit SYNC on page 03H address

10H is zero).

ADSEQ

Digital Milliwatt or Digital Test

Sequence. If one, the A-law digital

milliwatt analog test sequence will

be selected by the Per Time Slot

Control bits TTST and RTST (on

page 07H and 08H). If zero, the

PRBS 215-1 bit error rate test

sequence will be selected by the

Per Time Slot Control bits TTST and

RTST. The PRBS generator is reset

whenever this bit is set to 1.

GCI/ST

GCI or ST-BUS Frame Pulse. If

one, the MT9075A will transmit or

receive a GCI frame pulse on pin

F0b (pin 46 in PLCC, 34 in MQFP).

If zero, the MT9075A will transmit or

receive an ST-BUS frame pulse on

F0b.

Table 29 - Access Control Word

(Page 02H, Address 13H)

MT9075AL Datasheet(PDF) 39 Page - Mitel Networks Corporation

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