XRT72L13 Datasheet, PDF (167/370 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
ly, this bit-field will be set to “0” if a loop-back request
has NOT been detected for DS1 Channel # 18.
Bit 1 - DS1 Channel # 17 Loop-back Status
This “Read-Only” bit-field indicates whether or not a
loop-back request has been detected for DS1 Chan-
nel # 17.
This bit-field will be set to “1” if a loop-back request
has been detected for DS1 Channel # 17. Converse-
ly, this bit-field will be set to “0” if a loop-back request
has NOT been detected for DS1 Channel # 17.
Bit 0 - DS1 Channel # 16 Loop-back Status
This “Read-Only” bit-field indicates whether or not a
loop-back request has been detected for DS1 Chan-
nel # 16.
This bit-field will be set to “1” if a loop-back request
has been detected for DS1 Channel # 16. Converse-
ly, this bit-field will be set to “0” if a loop-back request
has NOT been detected for DS1 Channel # 16.
2.3.2.109 M12 DS2 # 6 Loopback Interrupt/Inter-
rupt Enable Register
M12 DS2 # 6 LOOP-BACK INTERRUPT/INTERRUPT ENABLE REGISTER (ADDRESS = 0X9D)
BIT 7
DS1
Channel 23
Loop-back
Request
Interrupt
Status
RUR
0
BIT 6
DS1
Channel 22
Loop-back
Request
Interrupt
Status
RUR
0
BIT 5
DS1
Channel 21
Loop-back
Request
Interrupt
Status
RUR
0
BIT 4
DS1
Channel 20
Loop-back
Request
Interrupt
Status
RUR
0
BIT 3
DS1
Channel 23
Loop-backj
Request
Interrupt
Enable
R/W
0
BIT 2
DS1
Channel 22
Loop-backj
Request
Interrupt
Enable
R/W
0
BIT 1
DS1
Channel 21
Loop-backj
Request
Interrupt
Enable
R/W/
0
BIT 0
DS1
Channel 20
Loop-backj
Request
Interrupt
Enable
R/W
0
Bit 7 - DS1 Channel 23 Loop-back Request Inter-
rupt Status
This “Reset-upon-Read” bit-field indicates whether
the “DS1 Channel 23 Loop-back Request” interrupt
has occurred or not.
This bit-field will be set to “1” if the “DS1 Channel 23
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 23
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 22 Loop-back Request Inter-
rupt Status
This “Reset-upon-Read” bit-field indicates whether
the “DS1 Channel 22 Loop-back Request” interrupt
has occurred or not.
This bit-field will be set to “1” if the “DS1 Channel 22
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 22
Loop-back Request” interrupt has NOT occurred
since the last read of this register.
Bit 5 - DS1 Channel 21 Loop-back Request Inter-
rupt Status
This “Reset-upon-Read” bit-field indicates whether
the “DS1 Channel 21 Loop-back Request” interrupt
has occurred or not.
This bit-field will be set to “1” if the “DS1 Channel 21
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 21
Loop-back Request” interrupt has NOT occurred
since the last read of this register.
Bit 4 - DS1 Channel 20 Loop-back Request Inter-
rupt Status
This “Reset-upon-Read” bit-field indicates whether
the “DS1 Channel 20 Loop-back Request” interrupt
has occurred or not.
This bit-field will be set to “1” if the “DS1 Channel 20
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 20
Loop-back Request” interrupt has NOT occurred
since the last read of this register.
Bit 3 - DS1 Channel 23 Loop-back Request Inter-
rupt Enable
This “Read/Write” bit-field permits the user to enable
or disable the “DS1 Channel 23 Loop-back Request”
Interrupt.
Setting this bit to “0” disables this interrupt. Con-
versely, setting this bit to “1” enables this interrupt.
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