XRT75R12DIB-F Exar Corporation, XRT75R12DIB-F Datasheet - Page 76

• Manufacturer Part Number: XRT75R12DIB-F
• Description: Peripheral Drivers & Components (PCIs) 12 Channel 3.3V-5V temp -45 to 85C
• Manufacturer: Exar Corporation

Specifications of XRT75R12DIB-F

• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Operating Supply Voltage: 3.3 V to 5 V
• Package / Case: TBGA-420
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

A
XRT75R12D
TWELVE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER
B
LARM
Reserved
IT
B
N
7
6
IT
UMBER
S
T
7
TATUS
ABLE
Loss of PRBS
Loss of PRBS Pat-
32: XRT75R12D R
Pattern Sync
R
EGISTER
B
Reserved
R/O
tern Lock
IT
N
6
AME
- C
HANNEL N
Digital LOS
Declared
Defect
B
R/O
IT
EGISTER
T
R/O
5
YPE
A
DDRESS
Loss of PRBS Pattern Lock Indicator:
This READ-ONLY bit-field indicates whether or not the PRBS Receiver
(within the Receive Section of Channel n) is declaring PRBS Lock within the
incoming PRBS pattern.
If the PRBS Receiver detects a very large number of bit-errors within its
incoming data-stream, then it will declare the Loss of PRBS Lock Condition.
Conversely, if the PRBS Receiver were to detect its pre-determined PRBS
pattern with the incoming DS3, E3 or STS-1 data-stream, (with little or no bit
errors) then the PRBS Receiver will clear the Loss of PRBS Lock condition.
0 - Indicates that the PRBS Receiver is currently declaring the PRBS Lock
condition within the incoming DS3, E3 or STS-1 data-stream.
1 - Indicates that the PRBS Receiver is currently declaring the Loss of PRBS
Lock condition within the incoming DS3, E3 or STs-1 data-stream.
N
MAP
Analog LOS
OTE
Declared
b. The PRBS Receiver is enabled.
a. The PRBS Generator block (within the Transmit Section of the Chip is
c. The PRBS Pattern (that is generated by the PRBS Generator) is
Defect
B
: This register bit is only valid if all of the following are true.
R/O
enabled).
somehow looped back into the Receive Path (via the Line-Side) and
in-turn routed to the receive input of the PRBS Receiver.
IT
SHOWING
L
4
OCATION
72
(FIFO Limit)
A
Declared
LARM
= 0
Alarm
B
R/O
FL
IT
XM
3
S
3 (
TATUS
M
= 0-5 & 8-D)
Receive LOL
D
ESCRIPTION
Declared
Defect
R
B
R/O
EGISTERS
IT
2
Receive LOS
(AS_
Declared
Defect
B
R/O
IT
N
1
)
(
N
= [0:11])
Condition
Transmit
REV. 1.0.3
B
DMO
R/O
IT
0