82P2821BH IDT, Integrated Device Technology Inc, 82P2821BH Datasheet - Page 59

• Manufacturer Part Number: 82P2821BH
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of 82P2821BH

• Number Of Transceivers: 1
• Screening Level: Industrial
• Mounting: Surface Mount
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Lead Free Status / RoHS Status: Not Compliant

3.5.9
the other 21 channels, or it can be used as a monitoring channel.
Channel 0 supports G.772 Monitoring and Jitter Measurement.
3.5.9.1 G.772 Monitoring
mitter of the other 21 channels can be monitored by channel 0 (as
shown in Figure-37).
(b5~0, MON) is not ‘0’), the registers of the receiver of channel 0 should
be the same as those of the selected receiver /transmitter except the
line interface related registers.
Functional Description
IDT82P2821
Channel 0 is a special channel. It can be used in normal operation as
Selected by the MON[5:0] bits (b5~0, MON), any receiver or trans-
When the G.772 Monitoring is implemented (the MON[5:0] bits
CHANNEL 0 MONITORING
RRINGn
RRING0
TRINGn
TRING0
RTIPn
RTIP0
TTIPn
TTIP0
G.772 Monitoring
Figure-37 G.772 Monitoring
Remaining Channels
21(+1) CHANNEL HIGH-DENSITY T1/E1/J1 LINE INTERFACE UNIT
Any of the
59
CH 0
switches to External Impedance Matching mode automatically, and the
setting in the R_TERM[2:0] bits (b2~0, RCF0,...) of channel 0 is ignored.
data is received from the selected path and the operation of the moni-
tored path is not effected.
Recovery of monitoring channel (channel 0). The monitored clock can
output on RCLK0. The monitored data can be observed digitally on the
output pin of RCLK0, RD0/RDP0 and RDN0. LOS detector is still in use
in channel 0 for the monitored signal.
back. The signal which is being monitored will output on TTIP0 and
TRING0. The output signal can then be connected to a standard test
equipment for non-intrusive monitoring.
Once the G.772 Monitoring is implemented, the receiver of channel 0
During the G.772 Monitoring, channel 0 processes as normal after
The signal which is monitored goes through the Clock & Data
In monitoring mode, channel 0 can be configured to Remote Loop-
RDn/RDPn
RDNn/RMFn
RCLKn/RMFn
TCLKn/TDNn
TDNn/TMFn
TDn/TDPn
RD0/RDP0
RDN0/RMF0
RCLK0/RMF0
TCLK0/TDN0
TDN0/TMF0
TD0/TDP0
February 6, 2009