
Agere Systems Inc.
185
Data Sheet
May 2001
155/622/2488 Mbits/s Data Interface
TDAT042G5 SONET/SDH
Register Descriptions
(continued)
OHP Registers
(continued)
Table 84. Registers 0x043A
—
0x0451: OHP Signal Degrade BER Algorithm Parameters (R/W)
Reset default of registers = 0x0000.
Notes:
OHP_SDNSSET[A
—
D][2:0] are located in registers 0x043B, 0x043D, 0x043F, and 0x0441, respectively.
OHP_SDNSCLEAR[A
—
D][2:0] are located in registers 0x0447, 0x0449, 0x044B, and 0x044D, respec-
tively.
Address
(Hex)
043A, 043C,
043E, 0440
043B, 043D,
043F, 0441
Bit #
Name
Function
Reset
Default
0x0000
15
—
0
OHP_SDNSSET
[A
—
D][18:3]
—
Signal Degrade Ns Set [18:3].
Number of
frames in a monitoring block for SD.
Reserved.
This bit must be written to its reset
default value (0).
Signal Degrade M Set.
Threshold of the num-
ber of bad monitoring blocks in an observation
interval. If the number of bad blocks is above
this threshold, then signal degrade (SD) is set.
Signal Degrade L Set.
Error threshold for
determining if a monitoring block is bad.
15
0
14
—
7
OHP_SDMSET[A
—
D][7:0]
0000
0000
6
—
3
OHP_SDLSET[A
—
D][3:0]
0x0
2
—
0
OHP_SDNSSET[A
—
D][2:0]
Signal Degrade Ns Set [2:0].
Number of
frames in a monitoring block for SD.
15
—
0 OHP_SDBSET[A
—
D][15:0]
Signal Degrade B Set.
Number of monitoring
blocks.
15
—
0
OHP_SDNSCLEAR
[A
—
D][18:3]
frames in a monitoring block for SD.
15
—
Reserved.
This bit must be written to its reset
default value (0).
14
—
7
OHP_SDMCLEAR
[A
—
D][7:0]
number of bad monitoring blocks in an observa-
tion interval. If the number of bad blocks is
below this threshold, then SD (signal degrade)
is cleared.
6
—
3
OHP_SDLCLEAR
[A
—
D][3:0]
determining if a monitoring block is bad.
2
—
0
OHP_SDNSCLEAR
[A
—
D][2:0]
frames in a monitoring block for SD.
15
—
0
OHP_SDBCLEAR
[A
—
D][15:0]
blocks.
000
0442
—
0445
0x0000
0446, 0448,
044A, 044C
0447, 0449,
044B, 044D
Signal Degrade Ns Clear [18:3].
Number of
0x0000
0
Signal Degrade M Clear.
Threshold of the
0000
0000
Signal Degrade L Clear.
Error threshold for
0x0
Signal Degrade Ns Clear[2:0].
Number of
000
044E
—
0451
Signal Degrade B Clear.
Number of monitoring
0x0000