XRT72L13 Datasheet, PDF (157/370 Pages) Exar Corporation – M13 MULTIPLEXER/CLEAR CHANNEL DS3 FRAMER IC

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PRELIMINARY
M13 MULTIPLEXER/CLEAR CHANNEL DS3 FRAMER IC XRT72L13
REV. 1.0.6
This bit-field will be set to “0” if there has been no
change in the “Loop-back Request Status” for DS2
Channel # 7. Conversely, this bit-field will set to “1”
anytime there has been a change in the “Loop-back
Request Status” for DS2 Channel # 7.
NOTE: This bit-field will be asserted in response to either of
the following conditions.
1. The “Loop-back Request Status” for DS2 Chan-
nel 7 has transitioned from the active to the inac-
tive state.
2. The Loop-back Request Status” for DS2 Channel
7 has transition from the inactive to the active
state.
Bit 5 - Change in Loop-back Request Interrupt
Status, M23 # 6.
This “Reset-upon-Read” bit-field indicates whether or
not there has been a change in the “Loop-back Re-
quest Status” for DS2 Channel # 6.
This bit-field will be set to “0” if there has been no
change in the “Loop-back Request Status” for DS2
Channel # 6. Conversely, this bit-field will set to “1”
anytime there has been a change in the “Loop-back
Request Status” for DS2 Channel # 6.
NOTE: This bit-field will be asserted in response to either of
the following conditions.
1. The “Loop-back Request Status” for DS2 Chan-
nel 6 has transitioned from the active to the inac-
tive state.
2. The Loop-back Request Status” for DS2 Channel
6 has transition from the inactive to the active
state.
Bit 4 - Change in Loop-back Request Interrupt
Status, M23 # 5.
This “Reset-upon-Read” bit-field indicates whether or
not there has been a change in the “Loop-back Re-
quest Status” for DS2 Channel # 5.
This bit-field will be set to “0” if there has been no
change in the “Loop-back Request Status” for DS2
Channel # 5. Conversely, this bit-field will set to “1”
anytime there has been a change in the “Loop-back
Request Status” for DS2 Channel # 5.
NOTE: This bit-field will be asserted in response to either of
the following conditions.
1. The “Loop-back Request Status” for DS2 Chan-
nel 5 has transitioned from the active to the inac-
tive state.
2. The Loop-back Request Status” for DS2 Channel
5 has transition from the inactive to the active
state.
Bit 3 - Change in Loop-back Request Interrupt
Status, M23 # 4.
This “Reset-upon-Read” bit-field indicates whether or
not there has been a change in the “Loop-back Re-
quest Status” for DS2 Channel # 4.
This bit-field will be set to “0” if there has been no
change in the “Loop-back Request Status” for DS2
Channel # 4. Conversely, this bit-field will set to “1”
anytime there has been a change in the “Loop-back
Request Status” for DS2 Channel # 4.
NOTE: This bit-field will be asserted in response to either of
the following conditions.
1. The “Loop-back Request Status” for DS2 Chan-
nel 4 has transitioned from the active to the inac-
tive state.
2. The Loop-back Request Status” for DS2 Channel
4 has transition from the inactive to the active
state.
Bit 2- Change in Loop-back Request Interrupt Sta-
tus, M23 # 3
This “Reset-upon-Read” bit-field indicates whether or
not there has been a change in the “Loop-back Re-
quest Status” for DS2 Channel # 3.
This bit-field will be set to “0” if there has been no
change in the “Loop-back Request Status” for DS2
Channel # 3. Conversely, this bit-field will set to “1”
anytime there has been a change in the “Loop-back
Request Status” for DS2 Channel # 3.
NOTE: This bit-field will be asserted in response to either of
the following conditions.
1. The “Loop-back Request Status” for DS2 Chan-
nel 3 has transitioned from the active to the inac-
tive state.
2. The Loop-back Request Status” for DS2 Channel
3 has transition from the inactive to the active
state.
Bit 1 - Change in Loop-back Request Interrupt
Status, M23 # 2
This “Reset-upon-Read” bit-field indicates whether or
not there has been a change in the “Loop-back Re-
quest Status” for DS2 Channel # 2.
This bit-field will be set to “0” if there has been no
change in the “Loop-back Request Status” for DS2
Channel # 2. Conversely, this bit-field will set to “1”
anytime there has been a change in the “Loop-back
Request Status” for DS2 Channel # 2.
NOTE: This bit-field will be asserted in response to either of
the following conditions.
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