MT9072AB datasheet(186/275 Pages) ZARLINK

186 / 275 page

MT9072

Data Sheet

186

Zarlink Semiconductor Inc.

Bit

Name

Functional Description

RIU1

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.

RNFA

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).

RAI

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.

RNU4

RNU5

RNU6

RNU7

RNU8

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.

7RIU0

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.

RFA2

RFA3

RFA4

RFA5

RFA6

RFA7

RFA8

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.

Table 156 - Non-Frame Alignment (NFAS) Signal and Frame Alignment Signal (FAS) Status

(R Address Y13) (E1)

MT9072AB Datasheet(PDF) 186 Page - Zarlink Semiconductor Inc

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