MT9076AB Просмотр технического описания (PDF) - Mitel Networks

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MT9076AB

T1/E1/J1 3.3V Single Chip Transceiver

Mitel Networks 

MT9076

Preliminary Information

T1/J1 Mode

HDLC0

• Assignable to the ESF Facility Data Link or

any channel

• Operates at 4 kbps, 56 kbps or 64 kbps

HDLC1, HDLC2

• Assignable to any channel

• Operates at 56 kbps or 64 kbps

E1 Mode

HDLC0

• Assigned to timeslot-0, bits Sa4~Sa8 or any

other timeslot

• Operates at 4, 8, 12, 16 or 20 kbps

depending on which Sa bits are selected for

HDLC0 use

HDLC1, HDLC

• Assigned to any timeslot except timeslot-0

• Operates at 64 kbps

Slip Buffers

T1/J1 Mode

Transmit Slip Buffer

• Two-frame slip buffer capable of performing a

controlled slip

• Intended for rate conversion and jitter

attenuation in the transmit direction

• Programmable delay

• 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

E1 Mode

Receive Slip Buffer

• Two-frame slip buffer capable of performing a

controlled slip

• Wander tolerance of 208 UI peak-to-peak

• Indication of slip direction

Jitter Attenuator FIFO

• 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

• Transmit and receive datastreams are

independently timed

• The transmit clock synchronizes to a

1,544MHz clock

• Transmit and receive slip buffers are

bypassed

• Robbed bit signaling and HDLCs are disabled

E1 Mode

• Transmit and receive datastreams are

independently timed

• Receive slip buffer is bypassed

• CAS and HDLCs are disabled

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