IDT82V2108PX8 IDT, Integrated Device Technology Inc, IDT82V2108PX8 Datasheet - Page 100

• Manufacturer Part Number: IDT82V2108PX8
• Description: IC FRAMER T1/J1/E1 8CH 128-PQFP
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of IDT82V2108PX8

• 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: Contains lead / RoHS non-compliant
• Other names: 82V2108PX8

IDT82V2108
3.23
Loopback and Payload Loopback are provided in this device.
3.23.1
framer can be set in the Line Loopback mode. In this configuration, the
Functional Description
TSCCKA
TSCCKB/
MTSCCKB
TSCFS/
MTSCFS
MTSSIG[1:2]
MTSD[1:2]
RSCCK/
MRSCCK
RSCFS/
MRSCFS
MRSD[1:2]
MRSSIG[1:2]
MRSFS[1:2]
There are three diagnostic loopback modes: Line Loopback, Digital
By programming the LINEB (b4, E1-007H / b4, T1/J1-00AH), each
LOOPBACK MODE
LINE LOOPBACK
TSDn
TSFSn/
TSSIGn
RSDn
RSCKn/
RSSIGn
RSFSn
Generator
/Detector
Transmit
Interface
PRBS
Interface
Receive
System
System
Transmit
Payload
Receive
Payload
Control
Control
Figure 70. Line Loopback
Transmitter
One of the Eight Framers
HDLC
CAS/RBS
Receive
#1
Buffer
90
jitter-attenuated clock and data from the Receive Jitter Attenuator are
looped internally to the Line Transmit Clock and Data (LTDn and
LTCKn). However, the Receive Jitter Attenuator can be bypassed if
required. The received data stream is still output to the system side
while the data stream input from the system side is ignored. Figure 70
shows the process.
Frame Generator
#2 #3
Loopback
Generator
Inband
Elastic
Detector
Buffer
Bit-Oriented
Code
Store
Alarm
Message
Receiver
Frame Processor
Bit-Oriented
Transmitter
Message
Receiver #1
Performance
Monitor
HDLC
Transmit
Clock
Loopback
Detector
Inband
Code
#2 #3
T1 / E1 / J1 OCTAL FRAMER
Attenuator
Transmit
Jitter
Attenuator
Receive
Jitter
Loopback
Line
March 5, 2009
LTCKn
LRCKn
LTDn
LRDn
XCK