PM7344 S/UNI-MPH
DATA SHEET
PMC-950449
ISSUE 6
MULTI-PHY USER NETWORK INTERFACE
Registers 041H, 141H, 241H and 341H: T1-TRAN Alarm Transmit
Bit
Type
Function
Default
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Unused
Unused
Unused
Unused
Unused
Unused
XYEL
X
X
X
X
X
X
0
R/W
R/W
XAIS
0
These registers control the transmission of T1 yellow or AIS Carrier Failure
Alarms (CFA).
XYEL:
The XYEL bit enables the TRAN to generate a yellow alarm in the appropriate
framing format. When XYEL is set to logic 1, the TRAN is enabled to set bit 2
of each channel to logic 0 for SF format and to transmit repetitions of
1111111100000000 (the yellow alarm bit oriented code) on the facility data link
for ESF format. When XYEL is set to logic 0, the TRAN is disabled from
generating the yellow alarm.
XAIS:
The XAIS bit enables the TRAN to generate an unframed all-ones AIS alarm.
When XAIS is set to logic 1, the TDP/TDN[x] outputs are forced to pulse
alternately, creating an all-ones signal. When XAIS is set to logic 0, the
TDP/TDN[x] outputs operate normally.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
148
PMC [ PMC-SIERRA, INC ]
