mt9075bpr1 Zarlink Semiconductor, mt9075bpr1 Datasheet - Page 42

• Manufacturer Part Number: mt9075bpr1
• Description: E1 Single Chip Transceiver With Liu
• Manufacturer: Zarlink Semiconductor

Bit
7
6
5
4
3
2
1
0
DSToDE
CSToDE
64KSEL
REFRM
TAIS16
Name
TAIS0
TAIS
TE
(0)
(0)
(0)
(0)
(0)
(0)
(0)
(0)
Transmit Alarm Indication Signal. If one, an all ones signal is transmitted. TAIS=0 for normal
operation.
Transmit AIS Time Slot Zero. If one, an all ones signal is transmitted in time slot zero. If zero,
time slot zero functions normally.
Transmit AIS Time Slot 16. If one, an all ones signal is transmitted in time slot 16. If zero, time
slot functions normally.
Transmit E bits. When CRC-4 synchronization is 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.
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.
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.
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 of terminal frame sync (SYNC=1), loss of
CRC4 sync (CRCSYN=1) or AIS.
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)
Zarlink Semiconductor Inc.
MT9075B
Functional Description
42
Data Sheet