XRT72L13 Datasheet, PDF (160/370 Pages) Exar Corporation – M13 MULTIPLEXER/CLEAR CHANNEL DS3 FRAMER IC

XRT72L13 MULTIPLEXER/FRAMER IC
REV. 1.0.6
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PRELIMINARY
Bit 0 - DS1 Channel 0 Loop-back Request Inter-
rupt Enable
This “Read/Write” bit-field permits the user to enable
or disable the “DS1 Channel 0 Loop-back Request”
Interrupt.
Setting this bit to “0” disables this interrupt. Con-
versely, setting this bit to “1” enables this interrupt.
2.3.2.100 M12 DS2 # 1 Loopback Status Register
M12 DS2 # 1 LOOP-BACK STATUS REGISTER (ADDRESS = 0X94)
BIT 7
R/O
0
BIT 6
BIT 5
Unused
R/O
R/O
0
0
BIT 4
/RO
0
BIT 3
DS1
Channel # 3
Loopback
Status
R/O
0
BIT 2
DS1
Channel # 2
Loopback
Status
R/O
0
BIT 1
DS1
Channel # 1
Loopback
Status
R/O
0
BIT 0
DS1
Channel # 0
Loopback
Status
R/O
0
Bit 3 - DS1 Channel # 3 Loop-back Status
This “Read-Only” bit-field indicates whether or not a
loop-back request has been detected for DS1 Chan-
nel # 3.
This bit-field will be set to “1” if a loop-back request
has been detected for DS1 Channel # 3. Conversely,
this bit-field will be set to “0” if a loop-back request
has NOT been detected for DS1 Channel # 3.
NOTE: This bit-field is invalid if the XRT72L13 M13 device
is operating in the “ITU-T G.747” Mode.
Bit 2 - DS1 Channel # 2 Loop-back Status
This “Read-Only” bit-field indicates whether or not a
loop-back request has been detected for DS1 Chan-
nel # 2.
This bit-field will be set to “1” if a loop-back request
has been detected for DS1 Channel # 2. Conversely,
this bit-field will be set to “0” if a loop-back request
has NOT been detected for DS1 Channel # 2.
Bit 1 - DS1 Channel # 1 Loop-back Status
This “Read-Only” bit-field indicates whether or not a
loop-back request has been detected for DS1 Chan-
nel # 1.
This bit-field will be set to “1” if a loop-back request
has been detected for DS1 Channel # 1. Conversely,
this bit-field will be set to “0” if a loop-back request
has NOT been detected for DS1 Channel # 1.
Bit 0 - DS1 Channel # 0 Loop-back Status
This “Read-Only” bit-field indicates whether or not a
loop-back request has been detected for DS1 Chan-
nel # 0.
This bit-field will be set to “1” if a loop-back request
has been detected for DS1 Channel # 0. Conversely,
this bit-field will be set to “0” if a loop-back request
has NOT been detected for DS1 Channel # 0.
2.3.2.101 M12 DS2 # 2 Loopback Interrupt/Inter-
rupt Enable Register
M12 DS2 # 2 LOOP-BACK INTERRUPT/INTERRUPT ENABLE REGISTER (ADDRESS = 0X95)
BIT 7
DS1
Channel 7
Loop-back
Request
Interrupt
Status
RUR
0
BIT 6
DS1
Channel 6
Loop-back
Request
Interrupt
Status
RUR
0
BIT 5
DS1
Channel 5
Loop-back
Request
Interrupt
Status
RUR
0
BIT 4
DS1
Channel 4
Loop-back
Request
Interrupt
Status
RUR
0
BIT 3
DS1
Channel 7
Loop-back
Request
Interrupt
Enable
R/W
0
BIT 2
DS1
Channel 6
Loop-back
Request
Interrupt
Enable
R/W
0
BIT 1
DS1
Channel 5
Loop-back
Request
Interrupt
Enable
R/W/
0
BIT 0
DS1
Channel 4
Loop-back
Request
Interrupt
Enable
R/W
0
Bit 7 - DS1 Channel 7 Loop-back Request Inter-
rupt Status
This “Reset-upon-Read” bit-field indicates whether
the “DS1 Channel 7 Loop-back Request” interrupt
has occurred or not.
This bit-field will be set to “1” if the “DS1 Channel 7
Loop-back Request Interrupt” has occurred since the
last read of this register.
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