MT9072
Data Sheet
Channel Associated Signaling
• ABCD or AB bits can be automatically inserted and extracted
• Transmit ABCD or AB bits can be passed via the microport or via the CSTi pin
• Receive ABCD or AB bits are accessible via the microport or via the CSTo pin
• Unused nibble positions in the CSTi/CSTo bandwidth are tri-stated
• An interrupt is provided in the event of changes in any of the signaling bits
• Receive signaling bits are frozen if digital loss of signal or loss of multiframe alignment is declared
T1/J1 Mode
• Signaling bits can be debounced by 6 ms
• Robbed bit or clear channel signaling are
selected on a channel by channel basis
• Signaling interrupts period can be selected: 1,
4 or 8 msec
E1 Mode
• Signaling bits can be debounced by 14 ms
• Signaling interupt period can be selected 1, 4
or 8 msec
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Zarlink Semiconductor Inc.