MT9076 Просмотр технического описания (PDF) - Mitel Networks

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Компоненты Описание

производитель

MT9076

T1/E1/J1 3.3V Single Chip Transceiver

Mitel Networks 

Preliminary Information

MT9076

TTIP

0.47uF RT

1:2.4

Fuse

Tx

TRING

RTIP

RRING

RT

+3.3 V

1:2.4

Fuse

Fuse

RT: 2.4 Ω

17.36 Ω

Fuse

Rx

Figure 5 - Analog Line Interface (T1)

Name

Functional Description

TXL2-0 Transmit Line Build Out 2 - 0. Setting these bits shapes the transmit pulse as detailed in the table

below:

TXL2

TXL1

TXL0

Line Build Out

0

0

0

0 to 133 feet/ 0 dB

0

0

1

133 to 266 feet

0

1

0

266 to 399 feet

0

1

1

399 to 533 feet

1

0

0

533 to 655 feet

1

0

1

-7.5 dB

1

1

0

-15 dB

1

1

1

-22.5 dB

After reset these bits are zero.

Table 1 - Transmit Line Build Out (T1)

TTIP

0.47uF RT

Tx

1:2.4 (WR=0)

1:2 (WR=1) Fuse

TRING

RTIP

RRING

RT

+3.3V

20.83 Ω

1:2.4

Fuse

Fuse

RT: Termination resis-

tor. Please check

Table 2 for specific

resistor values.

Fuse

Rx

Figure 6 - Analog Line Interface (E1)

19

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