78P2352 Dual Channel OC-3/STM1-E/E4 Line Interface Unit
REGISTER DESCRIPTION (continued)
ADDRESS N-5: STATUS MONITOR REGISTER
DFLT
BIT
NAME
TYPE
DESCRIPTION
VALUE
7:5
--
R/C
XXX
Reserved.
Loss of Signal Indication:
0: Normal operation
4
3
RXLOS
RXLOL
R/C
R/C
X
X
1: Loss of signal condition detected
Receive Loss of Lock Indication:
0: Normal operation
1: Recovered receive clock frequency differs from the reference by
more than +/- 100ppm.
2
1
--
R/C
R/C
X
X
Unused
Transmit Loss of Lock Indication:
TXLOL
0: Normal operation
1: Transmit CDR unlocked
Transmit FIFO Error Indication:
This bit is set whenever the internal FERR signal is asserted, indicating
that the FIFO is operating at its depth limit. It is reset to 0 when the
FRST pin is asserted.
0
FERR
R/C
X
0: Normal operation
1: Transmit FIFO phase error
ADDRESS N-6, N-7: RESERVED
DFLT
BIT
NAME
TYPE
DESCRIPTION
VALUE
7:0
RSVD
R/O
0
Reserved for test.
14
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