mt9072av2 Zarlink Semiconductor, mt9072av2 Datasheet - Page 95

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

14.2.6
The alarms shown in Table 49 are detected by the receiver. The status register bits provide real time status of the
alarm, while the latched status registers provide a latched status indication, and the interrupt status registers
provide a latched status indication (if unmasked) which generate a maskable interrupt and which are cleared when
read. The persistent status registers provide latched status indication which is only cleared when read while the real
time status bit is not set. See the register bit descriptions for additional details.
14.2.7
The transmission of RAI and signaling multiframe alarms can be made to function automatically from control bits
ARAI and AUTY (register address Y00). When ARAI = 0 and basic frame synchronization is lost (BSYNC = 1
address Y10), the MT9072 will automatically transmit the RAI alarm signal to the far end of the link. The
transmission of this alarm signal will cease when basic frame alignment is acquired.
When AUTY = 0 and signaling multiframe alignment is not acquired (MSYNC = 1 address Y10), the MT9072 will
automatically transmit the multiframe alarm (Y-bit) signal to the far end of the link. This transmission will cease
when signaling multiframe alignment is acquired.
Remote Alarm Indication
Alarm Indication Signal
Alarm Indication Signal 100ms
Channel 16 Alarm Indication
Signal
Auxiliary Pattern
Loss of Signal
Remote signaling Multiframe
Alarm
T1 Timer
T2 Timer
E1 Alarms
E1 Automatic Alarms
Description
Table 49 - Alarms and Timers Status Registers (E1)
AIS16
AUXP
LOSS
KLVE
RAI
AIS
Bit
T1
T2
Y
Register
Status
Add.
Y12
Y12
Y12
Y12
Y12
Y12
Y12
Y11
Y11
Zarlink Semiconductor Inc.
MT9072
AIS16L
AUXPL
LOSSL
Latched Status
RAIL
AISL
T1L
T2L
95
Bit
YL
Register
Add.
Y24
Y24
Y24
Y24
Y24
Y24
Y26
Y26
Interrupt Status
AIS16I
AUXPI
LOSSI
RAII
AISI
T1I
T2I
Bit
YI
Register
Add.
Y34
Y34
Y34
Y34
Y34
Y34
Y36
Y36
Persistent Status
LOSSP
RAIP
AISP
Bit
Register
Data Sheet
Add.
Y27
Y27
Y27