XRT75R03D Datasheet, PDF (88/134 Pages) Exar Corporation – THREE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCRONIZER

XRT75R03D
REV. 1.0.2 THREE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCRONIZER
TABLE 30: JITTER ATTENUATOR CONTROL REGISTER - CHANNEL 0 ADDRESS LOCATION = 0X07
Channel 1 Address Location = 0x0F
Channel 2 Address Location = 0x17
BIT 7
BIT 6
Unused
BIT 5
BIT 4
BIT 3
SONET APS
Recovery
Time Disable
Ch_n
JA RESET
Ch_n
BIT 2
JA1 Ch_n
BIT 1
JA in Tx Path
Ch_n
BIT 0
JA0 Ch_n
R/O
R/O
R/O
R/W
R/W
R/W
R/W
R/W
0
0
0
0
0
0
0
0
BIT NUMBER
NAME
7-3
4
Unused
SONET APS
Recovery Time
Mode Disable Ch_n
TYPE
R/O
R/W
DEFAULT
VALUE
DESCRIPTION
0
O
SONET APS Recovery Time Mode Disable - Channel n:
This READ/WRITE bit-field is used to either enable or dis-
able the "SONET APS Recovery Time" Mode within the Jit-
ter Attenuator, associated with Channel n.
If this feature is enabled the Jitter Attenuator (associated
with Channel n) will be configured such that the user’s sys-
tem will be able to comply with the APS Recovery Time
requirements of 50ms (per Telcordia GR-253-CORE).
If this feature is disabled the System using the
XRT75R03D will NOT comply with the APS Recovery Time
requirements of 50ms.
NOTE: In this case, "APS Recovery Time" is defined as the
amount of time that will elapse between (a) the
instant that Automatic Protection Switching (APS)
is employed (either "automatically" or upon
Software Command), and (b) the instant that an
entity (which is responsible for acquiring and
maintaining DS3/E3 frame synchronization with
the DS3/E3 data-stream that has been de-mapped
from SONET by the Mapper device) has re-
acquired DS3/E3 frame synchronization, after the
APS event.
0 - Enables the "SONET APS Recovery Time" Mode.
1 - Disables the "SONET APS Recovery Time" Mode.
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