參數(shù)資料
型號： LXT6251A
英文描述： ATM/SONET MAPPER|CMOS|QFP|208PIN|PLASTIC
中文描述： 的ATM / SONET的映射器|的CMOS | QFP封裝| 208PIN |塑料
文件頁數(shù)： 60/76頁
文件大小： 995K
代理商： LXT6251A
LXT6251A
—
21 E1 SDH Mapper
60
Datasheet
8.5
Interrupt Registers
8.5.1
GLOB_INTS
—
Global Interrupt Source (00CH)
The Tributary Alarm Group identifies the tributary group that is in alarm. The microprocessor will
require two reads (this and the Tributary ID interrupt register) to determine which tributary is in
alarm. Global alarms not associated with tributaries are also in this register.
8.5.2
TRIB_ISRC
—
Tributary Interrupt Source Identification (00F
–
00DH)
00FH=Bits<23:16>, 00EH=Bits<15:8>, 00DH=Bits<7:0> (Byte access only)
This 24-bit register indicate which tributary (or tributaries) has active interrupts. A
‘
1
’
indicates
tributary has an active interrupt.
Bit
Name
Description
Type
Default
7:0
ChipID
Chip Identification < 7:0>
RO
Bit
Name
Description
Type
Default
7:6
Reserved
Unused
X,X
5
LOMSt
1 = Indicates the H4 multiframe indicator has been lost. The alarm is set
when the DTBH4EN signal is constant
‘
0
’
.
RO
0
4
LOMInt
1 = Indicates the interrupt has been generated by the LOM alarm. The
interrupt bit is reset when the register is read.
RO
0
3
TBParInt
1 = indicates a mismatch between the received DTBPAR parity bit and the
calculated parity on the DTBDATA byte. The mismatch must occur 15 times
in one multiframe for the alarm to be set. The alarm will be reset when the
register is read.
RO
0
2
TribGrp3
1 = Indicates Tributaries 17-21 are source of interrupt.
RO
0
1
TribGrp2
1 = Indicates Tributaries 9-16 are source of interrupt
RO
0
0
TribGrp1
1 = Indicates Tributaries 1-8 are source of interrupt
RO
0
Bit
Name
Description
Type
Default
23:21
Reserved
Unused
20
Trib21
1 = Tributary has alarm.
R
19
Trib20
1 = Tributary has alarm.
R
18
Trib19
1 = Tributary has alarm.
R
17
Trib18
1 = Tributary has alarm.
R
16
Trib17
1 = Tributary has alarm.
R
15
Trib16
1 = Tributary has alarm.
R
14
Trib15
1 = Tributary has alarm.
R
13
Trib14
1 = Tributary has alarm.
R
12
Trib13
1 = Tributary has alarm.
R
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