LXT386LE datasheet(40/78 Pages) INTEL

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LXT386 — QUAD T1/E1/J1 Transceiver

Datasheet

Table 10. Remote Loopback Register, RLOOP (02H)

Bit

Name

Function

3-0

RL3-RL0

Setting a bit to “1” enables remote loopback for transceivers 3-0 respectively.

Table 11. TAOS Enable Register, TAOS (03H)

Bit1

Name

Function2

3-0

TAOS3-TAOS0

Setting a bit to “1” causes a continuous stream of marks to be sent out at the TTIP and

TRING pins of the respective transceiver 3-0.

7-4

Write “0” to these positions for normal operation.

1. On power up all register bits are set to “0”.

2. MCLK is used as timing reference. If MCLK is not available then the channel TCLK is used as the reference. This feature is

not available in data recovery and line driver mode (MCLK= High and TCLK = High)

Table 12. LOS Status Monitor Register, LOS (04H)

Bit1

Name

Function

3-0

LOS3-LOS0

Respective bit(s) are set to “1” every time the LOS processor detects a valid loss of signal

condition in transceivers 3-0.

1. On power up all register bits are set to “0”. Any change in the state causes an interrupt. All LOS interrupts are cleared by a

single read operation.

Table 13. DFM Status Monitor Register, DFM (05H)

Bit1

Name

Function

3-0

DFM3-DFM0

Respective bit(s) are set to “1” every time the short circuit monitor detects a valid

secondary output driver short circuit condition in transceivers 3-0. Note that DFM is

available only in configurations with no transmit series resistors (T1 mode with

TVCC=3.3V).

1. On power-up all the register bits are set to “0”. All DFM interrupts are cleared by a single read operation.

Table 14. LOS Interrupt Enable Register, LIE (06H)

Bit1

Name

Function

3-0

LIE3-LIE0

Transceiver 3-0 LOS interrupts are enabled by writing a “1” to the respective bit.

7-4

Write “0” to these positions for normal operation.

1. On power-up all the register bits are set to “0”and all interrupts are disabled.

Table 15. DFM Interrupt Enable Register, DIE (07H)

Bit1

Name

Function

3-0

DIE3-DIE0

Transceiver 3-0 DFM interrupts are enabled by writing a “1” to the respective bit.

7-4

Write “0” to these positions for normal operation.

1. On power-up all the register bits are set to “0”and all interrupts are disabled.

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