STANDARD PRODUCT
PMC-Sierra, Inc.
PM6344 EQUAD
PMC-951013
ISSUE 5
QUADRUPLE E1 FRAMER
117
Register 027H, 0A7H, 127H, 1A7H: FRMR Maintenance/Alarm Status
Bit
Type
Function
Default
Bit 7
R
RRA
X
Bit 6
R
RRMA
X
Bit 5
R
AISD
X
Bit 4
R
T16AISD
X
Bit 3
R
RED
X
Bit 2
R
AIS
X
Bit 1
Unused
X
Bit 0
Unused
X
Reading this register returns the current state value of the RRA, RRMA, AISD,
T16AISD, RED, and AIS maintenance/alarm statuses.
RRA:
The RRA bit is a logic one when the "A" bit (bit 3 in time slot 0 of the non-
frame alignment signal frame) has been a logic one for 2 or 3 consecutive
non-frame alignment signal frames, as determined by the RADEB bit. The
RRA output is updated every two frames.
RRMA:
The RRMA bit is a logic one when the "Y" bit (bit 6 in time slot 16 in frame 0
of the signaling multiframes) has been a logic one for 2 or 3 consecutive
signaling multiframes, as determined by the RMADEB bit. The RRMA bit is
updated every 16 frames.
AISD:
The AISD bit is a logic one after an unframed pattern of all ones with less
than 3 zeros in two consecutive frame times (512 bits) has been detected.
The AISD bit is updated every 512 bit times.
TS16AISD:
The TS16AISD is a logic one after an all-ones byte has been detected in time
slot 16 for 2 consecutive frames while out of signaling multiframe alignment.