MT9072 Zarlink Semiconductor, Inc., MT9072 Datasheet - Page 183
MT9072
Manufacturer Part Number
MT9072
Description
Octal T1-E1-J1 Framer
Manufacturer
Zarlink Semiconductor, Inc.
Datasheet
1.MT9072.pdf
(278 pages)
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Advance Information
Bit
15
14
13
12
10
11
9
8
7
6
5
4
3
2
1
0
Table 161 - Non-Frame Alignment (NFAS) Signal and Frame Alignment Signal (FAS) Status
Name
RNFA
RNU4
RNU5
RNU6
RNU7
RNU8
RFA2
RFA3
RFA4
RFA5
RFA6
RFA7
RFA8
RIU1
RIU0
RAI
Receive International Use 1. Indicates the status of the bit received on the PCM30 link in bit
position one of timeslot 0 of the non-frame alignment signal (NFAS) frames. This bit is the CRC-
4 multiframe alignment bit (001011) of the NFAS frames (1,3,5,7,9,11) when CRC-4 multiframing
is used. Or, this bit is used for international use.
Receive Non-Frame Alignment Bit. Indicates the status of the bit received on the PCM30 link
in bit position two of timeslot 0 of the non-frame alignment signal (NFAS) frames. This bit should
be one and identifies the frame as an NFAS frame (the FAS frame should have a zero in bit
position two of timeslot 0).
Remote Alarm Indication Status. Indicates the status of the bit (A-bit) received on the PCM30
link in bit position 3 of timeslot 0 of the non-frame alignment signal (NFAS) frames. If one, there
is currently a remote alarm condition. Updated on a NFAS frame basis.
This bit is identical to the RAI bit of register address Y12 and is duplicated here for convenience.
Receive National Use Four to Eight. Indicates the value of the Sa bits received on the PCM30
link in bit positions four to eight of timeslot 0 of the non-frame alignment signal (NFAS) frames.
Sa4 corresponds to RNU4, Sa5 to RNU5 and so on up to Sa8 to RNU8. Updated on a NFAS
frame basis.
Receive International Use Zero. Indicates the status of the bit received on the PCM30 link in
bit position one of timeslot 0 of the frame alignment signal (FAS) frames. This bit is the CRC-4
remainder bit (C1,C2,C3 or C4) of the FAS frames when CRC-4 multiframing is used. Or, this bit
is used for international use.
Receive Frame Alignment Signal (FAS) Bits 2 to 8. Indicates the value of the bits received on
the PCM30 link in bit positions two to eight of timeslot 0 of the frame alignment signal (FAS)
frames. These bits form the FAS and should have the value of 0011011.
(R Address Y13) (E1)
Functional Description
MT9072
183
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