
XRT86SH328
PRELIMINARY
200
28-CHANNEL DS1/E1 FRAMER/LIU WITH DS3 MUX & VT-MAPPER - SONET APPLICATIONS
REV. P1.0.6
N
OTE
:
Anytime the M12 MUX block has been configured to transmit a DS2 Loop-back request code, then it will set the
C-bits to the appropriate value (based upon the user-selection) as specified in the above table.
BIT [7:0] - See
Table 258
above, for Bit descriptions, substituting Channel 2 for Channel 1.
BIT [7:0] - See
Table 258
above, for Bit descriptions, substituting Channel 3 for Channel 1.
BIT [7:0] - See
Table 258
above, for Bit descriptions, substituting Channel 4 for Channel 1.
Loop-Back Codes
M12 L
OOP
-B
ACK
C
ODES
[1:0]
C-B
IT
S
ETTINGS
TO
R
EQUEST
DS2 L
OOP
-
BACK
C
ODES
C
OMMENTS
00/11
Cj1 = Cj2 = Cj3*
The M12 MUX block will invert the state of the Cj3 bit
(from that of the corresponding Cj1 and Cj2 bits) within
the outbound DS2 signal in order to request that the
remote terminal execute a remote Loop-back within the
jth DS1 signal.
01
Cj1 = Cj2* = Cj3
The M12 MUX block will insert the state of the of the Cj2
bit (from that of the corresponding Cj1 and Cj3 bits) within
the outbound DS2 signal in order to request that the
remote terminal execute a remote Loop-back within the
jth DS1 signal.
10
Cj1* = Cj2 = Cj3
The M12 MUX block will invert the state of the Cj1 bit
(from that of the corresponding Cj2 and Cj3 bits) in order
to request that the remote terminal execute a remote
Loop-back within the jth DS1 signal.
T
ABLE
259: DS3 F
RAMER
B
LOCK
- M12 C
ONFIGURATION
R
EGISTER
- DS2 C
HANNEL
# 2 (A
DDRESS
= 0
X
0E1B)
BIT7
BIT6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
Reserved
Set G.747
Mode
Set G.747
Reserved Bit
M12 FERF
Bit Setting
M12 Loop-back Code[1:0]
R/O
R/O
R/O
R/W
R/W
R/W
R/W
R/W
0
0
0
0
0
0
0
0
T
ABLE
260: DS3 F
RAMER
B
LOCK
- M12 C
ONFIGURATION
R
EGISTER
- DS2 C
HANNEL
# 3 (A
DDRESS
= 0
X
0E1C)
BIT7
BIT6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
Reserved
Set G.747
Mode
Set G.747
Reserved Bit
M12 FERF
Bit Setting
M12 Loop-back Code[1:0]
R/O
R/O
R/O
R/W
R/W
R/W
R/W
R/W
0
0
0
0
0
0
0
0
T
ABLE
261: DS3 F
RAMER
B
LOCK
- M12 C
ONFIGURATION
R
EGISTER
- DS2 C
HANNEL
# 4 (A
DDRESS
= 0
X
0E1D)
BIT7
BIT6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
Reserved
Set G.747
Mode
Set G.747
Reserved Bit
M12 FERF
Bit Setting
M12 Loop-back Code[1:0]
R/O
R/O
R/O
R/W
R/W
R/W
R/W
R/W
0
0
0
0
0
0
0
0