XRT72L13 datasheet(161/370 Pages) EXAR

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M13 MULTIPLEXER/CLEAR CHANNEL DS3 FRAMER IC

XRT72L13

PRELIMINARY

REV. 1.0.6

149

This bit-field will be set to “0” if the “DS1 Channel 7

Loop-back Request” interrupt has NOT occurred

since the last read of this register.

NOTE: This bit-field is ignored if the XRT72L13 is config-

ured to operate in the “ITU-T G.747 Mode”.

Bit 6 - DS1 Channel 6 Loop-back Request Inter-

rupt Status

This “Reset-upon-Read” bit-field indicates whether

the “DS1 Channel 6 Loop-back Request” interrupt

has occurred or not.

This bit-field will be set to “1” if the “DS1 Channel 6

Loop-back Request Interrupt” has occurred since the

last read of this register.

This bit-field will be set to “0” if the “DS1 Channel 6

Loop-back Request” interrupt has NOT occurred

since the last read of this register.

Bit 5 - DS1 Channel 5 Loop-back Request Inter-

rupt Status

This “Reset-upon-Read” bit-field indicates whether

the “DS1 Channel 5 Loop-back Request” interrupt

has occurred or not.

This bit-field will be set to “1” if the “DS1 Channel 5

Loop-back Request Interrupt” has occurred since the

last read of this register.

This bit-field will be set to “0” if the “DS1 Channel 5

Loop-back Request” interrupt has NOT occurred

since the last read of this register.

Bit 4 - DS1 Channel 4 Loop-back Request Inter-

rupt Status

This “Reset-upon-Read” bit-field indicates whether

the “DS1 Channel 4 Loop-back Request” interrupt

has occurred or not.

This bit-field will be set to “1” if the “DS1 Channel 4

Loop-back Request Interrupt” has occurred since the

last read of this register.

This bit-field will be set to “0” if the “DS1 Channel 4

Loop-back Request” interrupt has NOT occurred

since the last read of this register.

Bit 3 - DS1 Channel 7 Loop-back Request Inter-

rupt Enable

This “Read/Write” bit-field permits the user to enable

or disable the “DS1 Channel 7 Loop-back Request”

Interrupt.

Setting this bit to “0” disables this interrupt. Con-

versely, setting this bit to “1” enables this interrupt.

Bit 2 - DS1 Channel 6 Loop-back Request Inter-

rupt Enable

This “Read/Write” bit-field permits the user to enable

or disable the “DS1 Channel 6 Loop-back Request”

Interrupt.

Setting this bit to “0” disables this interrupt. Con-

versely, setting this bit to “1” enables this interrupt.

Bit 1 - DS1 Channel 5 Loop-back Request Inter-

rupt Enable

This “Read/Write” bit-field permits the user to enable

or disable the “DS1 Channel 5 Loop-back Request”

Interrupt.

Setting this bit to “0” disables this interrupt. Con-

versely, setting this bit to “1” enables this interrupt.

Bit 0 - DS1 Channel 4 Loop-back Request Inter-

rupt Enable

This “Read/Write” bit-field permits the user to enable

or disable the “DS1 Channel 4 Loop-back Request”

Interrupt.

Setting this bit to “0” disables this interrupt. Con-

versely, setting this bit to “1” enables this interrupt.

2.3.2.102 M12 DS2 # 2 Loopback Status Register

Bit 3 - DS1 Channel # 7 Loop-back Status

This “Read-Only” bit-field indicates whether or not a

loop-back request has been detected for DS1 Chan-

nel # 7.

This bit-field will be set to “1” if a loop-back request

has been detected for DS1 Channel # 7. Conversely,

this bit-field will be set to “0” if a loop-back request

has NOT been detected for DS1 Channel # 7.

M12 DS2 # 1 LOOP-BACK STATUS REGISTER (ADDRESS = 0X96)

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

Unused

DS1

Channel # 7

Loopback

Status

DS1

Channel # 6

Loopback

Status

DS1

Channel # 5

Loopback

Status

DS1

Channel # 4

Loopback

Status

R/O

/RO

R/O

0000

000

XRT72L13 Datasheet(PDF) 161 Page - Exar Corporation

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