IDT82V2108PXG IDT, Integrated Device Technology Inc, IDT82V2108PXG Datasheet - Page 23

• 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
Functional Description
errors in
second
> 914
CRC
one
alignment pattern if CRCEN =
1 (refer to CRC Multi-Frame)
search for CRC Multi-Frame
alignment patterns within 8ms, with the
interval time of each pattern being a
OOCMFV=0, OOFV=0 CRC
find 2 CRC Multi-Frame
acquired; Start CRC and
CRC Multi-Frame sync.
to CRC interworking
E-bits processing;
multiple of 2ms
Start 8ms and
400ms timer
Yes
search for Basic Fframe alignment patten
(refer to Basic Frame)
Figure 3. E1 Frame Searching Process
No, and
No, and
Basic Frame sync. acquired
expired
expired
Start to check FAS errors
8ms
8ms
OOOFV=0,RAI=1,Ei=0
OOFV=1,OOCMFV=1,
OOFV=0, RAI=0, Ei=0
Yes
Yes
Yes
alignment patterns within 8ms, with the
OOSMFV=1,
(N+1) frame
find NFAS in
(N+2) frame
Out of sync.
interval time of each pattern being a
find FAS in
find FAS in
N frame
th
Basic Frame sync. acquired
th
th
Lock the Sync. Position
Yes
13
find 2 CRC Multi-Frame
Start Offline Frame
search OOOFV=1
Yes
Yes
Yes
Start 8ms timer
multiple of 2ms
(n+2) frame
(n+1) frame
No (N=N+1)
find NFAS in
frame, N=N+3)
No (N=N+3)
find FAS in
OOOFV=0
find FAS in
No (skip one
n frame
th
th
th
No (n = n+1)
frame, n=n+3)
No (skip one
No (n=n+3)
alignment if CASDIS = 1 (refer to
search for Signaling Multi-Frame
Signaling Multi-Frame)
errors (criteria selected by the
BIT2C) or manually re-frame
3 consecutive FAS or NFAS
basic frame sync.
No, and 400ms
expired with
Sync conditions which criteria
of Signaling Multi-Frame
are set in the SMFASC
Multi-Frame alignment
Multi-Frame sync.
No
No
T1 / E1 / J1 OCTAL FRAMER
find Signaling
check for out
Stop CRC processing
Signaling
& TS16C
acquired
E-bits set to logic 0
CRC to non-CRC
pattern
C2NCIWV=1
interworking
Yes
Yes
March 5, 2009