XRT7250 datasheet(99/463 Pages) EXAR

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XRT7250

DS3/E3 FRAMER IC

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REV. 1.1.1

Bit 4 - COFA (Change of Frame Alignment) Inter-

rupt Enable

This Read/Write bit-field allows the user to enable or

disable the Change of Frame Alignment interrupt.

Setting this bit-field to "1" enables this interrupt. Set-

ting this bit-field to "0" disables this interrupt.

Bit 3 - OOF (Change in OOF Condition) Interrupt

Enable

This Read/Write bit field allows the user to enable or

disable the Change in Out-of-Frame (OOF) status in-

terrupt. Setting this bit-field to "1" enables this inter-

rupt. Setting this bit-field to "0" disables this interrupt.

NOTE: For more information on the OOF Condition, please

see Section 4.3.2.2.

Bit 2 - LOF (Change in LOF Condition) Interrupt

Enable

This Read/Write bit-field allows the user to enable or

disable the Change in Loss-of-Frame (LOF) status in-

terrupt. Setting this bit-field to "1" enables this inter-

rupt. Setting this bit-field to "0" disables this interrupt.

NOTE: For more information on the LOF Condition, please

see Section 4.3.2.2.

Bit 1 - LOS (Change in LOS Condition) Interrupt

Enable

This Read/Write bit-field allows the user to enable or

disable the Change in LOS condition interrupt. Set-

ting this bit-field to "1" enables this interrupt. Setting

this bit-field to "0" disables this interrupt.

NOTE: For more information on the LOS Condition, please

see Section 4.3.2.7.

Bit 0 - AIS (Change in AIS Condition) Interrupt En-

able

This Read/Write bit-field allows the user to enable or

disable the Change in AIS condition interrupt. Setting

this bit-field to "1" enables this interrupt. Setting this

bit-field to "0" disables this interrupt.

NOTE: For more information on the AIS Condition, please

see Section 4.3.2.8

2.3.4.4

Receive E3 Interrupt Enable Register -

2 (E3, ITU-T G.751)

Bit 3 - FERF (Far-End Receive Failure) Interrupt

Enable

This Read/Write bit-field allows the user to enable or

disable the Change in FERF Condition interrupt. Set-

ting this bit-field to "1" enables this interrupt. Setting

this bit-field to "0" disables this interrupt.

NOTE: For more information on the Change in FERF Condi-

tion interrupt, please see Section 4.3.6.1.6.

Bit 2 - BIP-4 Error Interrupt Enable

This Read/Write bit-field allows the user to enable or

disable the BIP-4 Error interrupt. Setting this bit-field

to "1" enables this interrupt. Setting this bit-field to

"0" disables this interrupt.

NOTE: For more information on this interrupt, please see

Section 4.3.6.1.7.

Bit 1 - Framing Error Interrupt Enable

This Read/Write bit-field allows the user to enable or

disable the Framing Error interrupt. Setting this bit-

RXE3 INTERRUPT ENABLE REGISTER - 1 (ADDRESS = 0X12)

BIT 7BIT 6BIT 5BIT 4BIT 3BIT 2BIT 1BIT 0

Not Used

COFA

Interrupt

Enable

OOF

Interrupt

Enable

LOF

Interrupt

Enable

LOS

Interrupt

Enable

AIS

Interrupt

Enable

R/W

000

RXE3 INTERRUPT ENABLE REGISTER - 2 (ADDRESS = 0X13)

BIT 7BIT 6BIT 5BIT 4BIT 3BIT 2BIT 1BIT 0

Not Used

FERF

Interrupt

Enable

BIP-4 Error

Interrupt

Enable

Framing Error

Interrupt

Enable

Not Used

R/W

000

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