XRT83SH38ES View Datasheet(PDF) - Exar Corporation
Part Name
Description
MFG CO.
'XRT83SH38ES' PDF : 78 Pages View PDF
XRT83SH38
REV. 1.0.7
8-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT
NOTE: The GIE bit in the global register 0x80h must be set to "1" in addition to the individual register bits to enable the
interrupt pin.
TABLE 28: MICROPROCESSOR REGISTER 0X05H BIT DESCRIPTION
CHANNEL 0-7 (0X05H-0X75H)
BIT
NAME
FUNCTION
Register
Type
Default
Value
(HW reset)
D7
Reserved This Register Bit is Not Used.
D6
DMO Digital Monitor Output
RO
0
The digital monitor output is always active regardless if the inter-
rupt generation is disabled. This bit indicates the DMO activity. An
interrupt will not occur unless the DMOIE is set to "1" in the chan-
nel register 0x04h and GIE is set to "1" in the global register 0x80h.
0 = No Alarm
1 = Transmit output driver has failures
D5
FLS FIFO Limit Status
RO
0
The FIFO limit status is always active regardless if the interrupt
generation is disabled. This bit indicates whether the RD/WR
pointers are within 3-Bits. An interrupt will not occur unless the
FLSIE is set to "1" in the channel register 0x04h and GIE is set to
"1" in the global register 0x80h.
0 = No Alarm
1 = RD/WR FIFO pointers are within ±3-Bits
D4
LCV/OF Line Code Violation / Counter Overflow
RO
0
This bit serves a dual purpose. By default, this bit monitors the line
code violation activity. However, if bit 7 in register 0x81h is set to a
"1", this bit monitors the overflow status of the internal LCV
counter. An interrupt will not occur unless the LCV/OFIE is set to
"1" in the channel register 0x04h and GIE is set to "1" in the global
register 0x80h.
0 = No Alarm
1 = A line code violation, bipolar violation, or excessive zeros has
occurred
D3
Reserved This Register Bit is Not Used.
D2
AISD Alarm Indication Signal
RO
0
The alarm indication signal detection is always active regardless if
the interrupt generation is disabled. This bit indicates the AIS
activity. An interrupt will not occur unless the AISIE is set to "1" in
the channel register 0x04h and GIE is set to "1" in the global regis-
ter 0x80h.
0 = No Alarm
1 = An all ones signal is detected
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