IDT82V2108PXG IDT, Integrated Device Technology Inc, IDT82V2108PXG Datasheet - Page 25

• Manufacturer Part Number: IDT82V2108PXG
• Description: IC FRAMER T1/J1/E1 8CH 128-PQFP
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of IDT82V2108PXG

• Controller Type: T1/E1/J1 Framer
• Interface: Parallel
• Voltage - Supply: 2.97 V ~ 3.63 V
• Current - Supply: 160mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 128-MQFP, 128-PQFP
• Screening Level: Industrial
• Mounting: Surface Mount
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 82V2108PXG

IDT82V2108
Table 1: Structure of TS0 of CRC Multi-Frame
3.2.1.1.3
found, the Frame Processor starts to search for Signaling Multi-Frame
alignment pattern when the CASDIS (E1-030H) is ‘0’. If the CRCEN is
‘0’, after the Basic Frame has been found, the Frame Processor starts to
search for Signaling Multi-Frame alignment signal when the CASDIS
(E1-030H) is ‘0’. Refer to Figure 3.
bits of TS16 of Frame 0 of Signaling Multi-Frame. The pattern is ‘0000’.
Once the pattern is detected, the Signaling Multi-Frame synchronization
is acquired which is indicated with a logic ‘0’ in the OOSMFV (b5, E1-
036H). If the received Signaling Multi-Frame alignment signal does not
meet its pattern, the SMFERI (b1, E1-034H) will be set to ‘1’. The entire
content in TS16 of Frame 0 of Signaling Multi-Frame is ‘0000XYXX’. The
‘Y’ is for remote Signaling Multi-Frame alarm indication and the ‘X’s are
extra bits.
ated when the out of the Signaling Multi-Frame criteria set in the
SMFASC (b5, E1-031H) and the TS16C (b4, E1-031H) are met or when
it is out of Basic Frame synchronization.
3.2.1.2
3.2.1.2.1
tion condition has persisted for 100 ms. RED alarm is removed when the
out of Basic Frame synchronization condition has been absent for 100
ms. The RED alarm status is reflected in the RED (b3, E1-037H).
Functional Description
Multi-Frame
CRC-4
If the CRCEN (E1-030H) is ‘1’, after the CRC Multi-Frame has been
The Signaling Multi-Frame alignment pattern is located in the 1 – 4
A new search of Signaling Multi-Frame alignment pattern is initi-
RED alarm is declared when the out of Basic Frame synchroniza-
SMF II
SMF I
Alarms & Bit Extraction
SMF
CAS Signaling Multi-Frame
RED Alarm
Basic Frame
No. / Type
11 / NFAS
13 / NFAS
15 / NFAS
1 / NFAS
3 / NFAS
5 / NFAS
7 / NFAS
9 / NFAS
10 / FAS
12 / FAS
14 / FAS
0 / FAS
2 / FAS
4 / FAS
6 / FAS
8 / FAS
1 (Si bit)
C1
C2
C3
C4
C1
C2
C3
C4
E1
E2
0
0
1
0
1
1
2
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
A
A
A
A
A
A
A
A
3
0
0
0
0
0
0
0
0
15
when any of the following conditions is met:
chronization criteria set in the BIT2C (b6, E1-031H).
E1-036H).
algorithm monitors the occurrence of out of Basic Frame over a 4 ms
interval. A valid out of Basic Frame presence is accumulated when one
or more out of Basic Frame indications occurred during the 4 ms inter-
val. Each valid out of Basic Frame presence increases one accumula-
tion. An invalid out of Basic Frame presence is also accumulated when
there is no out of Basic Frame indication occurring during the 4 ms inver-
val. Each invalid out of Basic Frame indication decreases one accumu-
lation (until the accumulation is zero). The RED alarm is declared when
25 valid out of Basic Frame presences have been accumulated. The
RED alarm is removed when the out of Basic Frame presences reaches
0.
3.2.1.2.2
That is, if it is out of Basic Frame synchronization and less than 3 zeros
are detected in a 512-bit stream, or if it is out of Basic Frame synchroni-
zation and less than 3 zeros are detected in each of 2 consecutive 512-
bit streams, the status will be reported by the AISD (b5, E1-037H).
the Eight Bits in Time Slot 0
The received data stream is out of Basic Frame synchronization
1) The Basic Frame has not been synchronized.
2) The received data stream meets the out of Basic Frame syn-
3) There are excessive CRC errors in the received data stream.
Any one of the three conditions will be indicated by the OOFV (b6,
The integration of RED alarm uses the following algorithm: The
The AIS density criteria are determined by the AISC (b1, E1-031H).
Sa4
Sa4
Sa4
Sa4
Sa4
Sa4
Sa4
Sa4
4
1
1
1
1
1
1
1
1
AIS Alarm
Sa5
Sa5
Sa5
Sa5
Sa5
Sa5
Sa5
Sa5
5
1
1
1
1
1
1
1
1
Sa6
Sa6
Sa6
Sa6
Sa6
Sa6
Sa6
Sa6
6
0
0
0
0
0
0
0
0
T1 / E1 / J1 OCTAL FRAMER
Sa7
Sa7
Sa7
Sa7
Sa7
Sa7
Sa7
Sa7
7
1
1
1
1
1
1
1
1
March 5, 2009
Sa8
Sa8
Sa8
Sa8
Sa8
Sa8
Sa8
Sa8
8
1
1
1
1
1
1
1
1