MT9076
Preliminary Information
T1/J1 Mode
E1 Mode
HDLC0
HDLC0
•
Assignable to the ESF Facility Data Link or
any channel
•
Assigned to timeslot-0, bits Sa4~Sa8 or any
other timeslot
•
Operates at 4 kbps, 56 kbps or 64 kbps
•
Operates at 4, 8, 12, 16 or 20 kbps
depending on which Sa bits are selected for
HDLC0 use
HDLC1, HDLC2
•
•
Assignable to any channel
HDLC1, HDLC
Operates at 56 kbps or 64 kbps
•
•
Assigned to any timeslot except timeslot-0
Operates at 64 kbps
Slip Buffers
T1/J1 Mode
Transmit Slip Buffer
E1 Mode
Receive Slip Buffer
•
Two-frame slip buffer capable of performing a
controlled slip
•
•
•
Two-frame slip buffer capable of performing a
controlled slip
•
Intended for rate conversion and jitter
attenuation in the transmit direction
Wander tolerance of 208 UI peak-to-peak
•
•
Programmable delay
Indication of slip direction
Transmit slips are independent of receive
slips
•
Indication of slip direction
Receive Slip Buffer
•
Two-frame slip buffer capable of performing a
controlled slip
•
•
Wander tolerance of 142 UI (92 µs) peak
Indication of slip direction
Jitter Attenuator FIFO
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A jitter attenuator FIFO is available on the transmit side in E1 mode and in IMA mode. The depth of the
JA FIFO can be configured to be from16 bits deep to 128 bits deep in 16 bit increments
Inverse Mux for ATM (IMA) Mode
T1/J1 Mode
E1 Mode
•
•
Transmit and receive datastreams are
independently timed
•
Transmit and receive datastreams are
independently timed
The transmit clock synchronizes to a
1,544MHz clock
•
•
Receive slip buffer is bypassed
CAS and HDLCs are disabled
•
•
Transmit and receive slip buffers are
bypassed
Robbed bit signaling and HDLCs are disabled
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