mt9074ap1 Zarlink Semiconductor, mt9074ap1 Datasheet - Page 97

• Manufacturer Part Number: mt9074ap1
• Description: T1/e1/j1 Single Chip Transceiver With Wide Dynamic Range Liu
• Manufacturer: Zarlink Semiconductor

Bit
7
6
5
4
3
2
1
0
LOS/LOF
CRCE
PERR
Name
BPVE
NFSE
LOSE
FASE
- - -
Bipolar Violation Error Insertion. A zero to one transition of this bit inserts
a single bipolar violation error into the transmit PCM30 data. A one, zero or
one to zero transition has no function.
CRC-4 Error Insertion. A zero to one transition of this bit inserts a single
CRC-4 error into the transmit PCM30 data. A one, zero, or one to zero
transition has no function.
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 PCM30 data. A one, zero, or one to zero transition has no function.
Non-frame Alignment Signal Error Insertion. A 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 PCM30 data. A one, zero, or one to zero
transition has no function.
Loss of Signal Error Insertion. If one, the MT9074 transmits an all zeros
signal (no pulses) in every PCM30 time slot. When HDB3 encoding is
activated no violations are transmitted. If zero, data is transmitted normally.
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
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. A loss of
signal is defined as either receipt of a signal attenuated below the analog
loss of signal threshold (selectable as 20 dB or 40 dB below nominal) or
receipt of 192 consecutive 0’s. If low, pin LOS will go high when either a
loss of signal or a loss of basic frame alignment state exits (bit SYNC on
page 03H address 10H is zero).
Table 88 - Error Insertion Word (E1)
(Page 1, Address 19H)
Zarlink Semiconductor Inc.
MT9074
97
Functional Description
Data Sheet