mt9072av2 Zarlink Semiconductor, mt9072av2 Datasheet - Page 182

• Manufacturer Part Number: mt9072av2
• Description: Octal T1/e1/j1 Framer
• Manufacturer: Zarlink Semiconductor

Bit
15
14
13
12
10
11
9
8
7
6
5
4
3
MSYNC Receive Multiframe Alignment. If zero, indicates the received PCM30 link signaling
CSYNC
BSYNC
RCRC0
RCRC1
RSLPD
RFAIL
Name
CEFS
RSLP
REB1
RED
#
#
Table 153 - Synchronization & CRC-4 Remote Status (R Address Y10) (E1)
not used.
Receive Slip. This bit changes state when a receive controlled frame slip has occurred.
Receive Slip Direction. If one, indicates that the last received frame slip (RSLP toggled of
register Y10) resulted in a repeated frame. This would occur if the system clock (CKi/2) was
faster than the network clock (EXCLi). If zero, indicates that the last received frame slip (RSLP)
resulted in a lost frame. This would occur if the system clock (CKi/2) was slower than the
network clock (EXCLi). Updated on an RSLP occurrence basis.
Receive Basic Frame Alignment. If zero, indicates the received PCM30 link basic frame
alignment pattern (x0011011 in timeslot 0 of alternate frames) is acquired; if one, the basic
frame alignment pattern is lost or not acquired.
multiframe alignment signal (0000xxxx in timeslot 16 of every16th frame) is acquired; if one, the
signaling multiframe alignment signal is lost or not acquired.
Receive CRC-4 Synchronization. If zero, indicates the received PCM30 link CRC-4
multiframe alignment pattern (001011xx in timeslot 0, in bit position 1 of 16 alternate frames) is
acquired; if one, the CRC-4 multiframe alignment pattern is lost or not acquired.
RED Alarm. If one, indicates that basic frame alignment (BSYNC of register address Y10) has
been lost for at least 100 msec. This bit is cleared (zero) when basic frame alignment is
acquired.
Consecutively Errored Frame Alignment Signal. If one, the last two frame alignment signals
(FAS=0011011) were received in error. If zero, at least one of the last two frame alignment
signals were received without error. A non-errored FAS would result in the RFA status bits
(register address Y13) set as follows, RFA2=0, RFA3=0, RFA4=1, RFA5=1, RFA6=0, RFA7=1,
RFA8=1
not used.
Remote CRC-4 and RAI T10. If one, the received A bits were one and the received E bits were
zero (RCRCR register address Y10) continuously for more than 10 ms. See I.431 section
3.4.1.2 on RAI and continuous CRC error information.
Remote CRC-4 and RAI T450. If one, the received A bits were one and the received E bits
were zero (RCRCR register address Y10) continuously for more than 10 ms but less than
450 ms. See I.431 section 3.4.1.2 on RAI and continuous CRC error information.
Remote CRC-4 Multiframe Generator/Detector Failure. If one, each of the previous five
seconds have an E-bit (E1 + E2) of error count of greater than 989 (E-bit counter 3DD hex or 11
1101 1101 address Y17), and for this same period the receive RAI bit (register addressY12 and
Y13) was zero (no remote alarm), and for the same period the BSYNC bit (register address
Y10) was equal to zero (basic frame alignment has been maintained). If zero, indicates normal
operation.
Receive E1 Bit Status. Indicates the status of the bit (E1) received on the PCM30 link in bit
position 1 of timeslot 0 in non-frame alignment signal (NFAS) frame 13. If zero, the remote end
calculated a CRC-4 error in its received sub-multiframe one. If one, no error was calculated.
Zarlink Semiconductor Inc.
MT9072
Functional Description
182
Data Sheet