PM7344 S/UNI-MPH
DATA SHEET
PMC-950449
ISSUE 6
MULTI-PHY USER NETWORK INTERFACE
CFA. When REDEN is logic 0, assertion of red CFA does not cause
transmission of a receive failure indication.
OOFEN:
The OOFEN bit enables the receive out of frame indication to automatically
generate a receive failure indication in the transmit stream. This bit operates
regardless of the format selected (T1 or E1). When OOFEN is logic 1,
declaration of the OOF alarm causes a yellow alarm (T1) or remote alarm
indication (E1) to be transmitted for the duration of the OOF alarm. When
OOFEN is logic 0, assertion of the OOF alarm does not cause transmission
of a receive failure indication.
LOSEN:
The LOSEN bit enables the receive loss of signal indication to automatically
generate a receive failure indication in the transmit stream. This bit operates
regardless of the format selected (T1 or E1). When LOSEN is logic 1,
declaration of the LOS alarm causes a yellow alarm (T1) or remote alarm
indication (E1) to be transmitted for the duration of the LOS alarm. The LOS
alarm is removed when the pulse density requirements for the T1 or E1
format are satisfied. When LOSEN is logic 0, assertion of the LOS alarm
does not cause transmission of a receive failure indication.
TAISEN:
When the T1 or E1 format is selected, the TAISEN bit enables the generation
of an unframed all-ones AIS alarm on the TDP/TDD[x] and TDN/TOHO[x]
multifunction pins. When TAISEN is set to logic 1 and TUNI is set to logic 0,
the bi-polar TDP[x] and TDN[x] outputs are forced to pulse alternately,
creating an all-ones signal; when TAISEN and TUNI are both set to logic 1,
the uni-polar TDD[x] output is forced to all-ones. When TAISEN is set to logic
0, the TDP/TDD[x] and TDN/TOHO[x] multifunction outputs operate normally.
The transition to transmitting AIS on the TDP[x] and TDN[x] outputs is done in
such a way as to not introduce any bipolar violations.
MODE [1:0]:
The MODE[1:0] bits determine the configuration of each physical interface
transmitter in the S/UNI-MPH. The four interfaces must be configured
identically by writing these bits in each of the four Transmit Configuration
registers.
MODE[1] MODE[0] Configuration
0
0
1.544 Mbit/s T1 ATM UNI
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
72
PMC [ PMC-SIERRA, INC ]
