XRT72L13 Datasheet, PDF (161/370 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 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
M12 DS2 # 1 LOOP-BACK STATUS REGISTER (ADDRESS = 0X96)
BIT 7
R/O
0
BIT 6
BIT 5
Unused
R/O
R/O
0
0
BIT 4
/RO
0
BIT 3
DS1
Channel # 7
Loopback
Status
R/O
0
BIT 2
DS1
Channel # 6
Loopback
Status
R/O
0
BIT 1
DS1
Channel # 5
Loopback
Status
R/O
0
BIT 0
DS1
Channel # 4
Loopback
Status
R/O
0
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.
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