XRT72L13 Datasheet, PDF (168/370 Pages) Exar Corporation – M13 MULTIPLEXER/CLEAR CHANNEL DS3 FRAMER IC

XRT72L13 MULTIPLEXER/FRAMER IC
REV. 1.0.6
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PRELIMINARY
Bit 2 - DS1 Channel 22 Loop-back Request Inter-
rupt Enable
This “Read/Write” bit-field permits the user to enable
or disable the “DS1 Channel 22 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 21 Loop-back Request Inter-
rupt Enable
This “Read/Write” bit-field permits the user to enable
or disable the “DS1 Channel 21 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 20 Loop-back Request Inter-
rupt Enable
This “Read/Write” bit-field permits the user to enable
or disable the “DS1 Channel 20 Loop-back Request”
Interrupt.
Setting this bit to “0” disables this interrupt. Con-
versely, setting this bit to “1” enables this interrupt.
2.3.2.110 M12 DS2 # 6 Loopback Status Register
M12 DS2 # 1 LOOP-BACK STATUS REGISTER (ADDRESS = 0X9E)
BIT 7
R/O
0
BIT 6
BIT 5
Unused
R/O
R/O
0
0
BIT 4
/RO
0
BIT 3
BIT 2
BIT 1
BIT 0
DS1
DS1
DS1
DS1
Channel # 24 Channel # 23 Channel # 22 Channel # 21
Loopback Loopback Loopback Loopback
Status
Status
Status
Status
R/O
R/O
R/O
R/O
0
0
0
0
Bit 3 - DS1 Channel # 24 Loop-back Status
This “Read-Only” bit-field indicates whether or not a
loop-back request has been detected for DS1 Chan-
nel # 24.
This bit-field will be set to “1” if a loop-back request
has been detected for DS1 Channel # 24. Converse-
ly, this bit-field will be set to “0” if a loop-back request
has NOT been detected for DS1 Channel # 24.
NOTE: This bit-field is invalid if the XRT72L13 M13 device
is operating in the “ITU-T G.747” Mode.
Bit 2 - DS1 Channel # 23 Loop-back Status
This “Read-Only” bit-field indicates whether or not a
loop-back request has been detected for DS1 Chan-
nel # 23.
This bit-field will be set to “1” if a loop-back request
has been detected for DS1 Channel # 23. Converse-
ly, this bit-field will be set to “0” if a loop-back request
has NOT been detected for DS1 Channel # 23.
Bit 1 - DS1 Channel # 22 Loop-back Status
This “Read-Only” bit-field indicates whether or not a
loop-back request has been detected for DS1 Chan-
nel # 22.
This bit-field will be set to “1” if a loop-back request
has been detected for DS1 Channel # 22. Converse-
ly, this bit-field will be set to “0” if a loop-back request
has NOT been detected for DS1 Channel # 22.
Bit 0 - DS1 Channel # 21 Loop-back Status
This “Read-Only” bit-field indicates whether or not a
loop-back request has been detected for DS1 Chan-
nel # 21.
This bit-field will be set to “1” if a loop-back request
has been detected for DS1 Channel # 21. Converse-
ly, this bit-field will be set to “0” if a loop-back request
has NOT been detected for DS1 Channel # 21.
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