XRT84L38IB Exar Corporation, XRT84L38IB Datasheet - Page 135

• Manufacturer Part Number: XRT84L38IB
• Description: Network Controller & Processor ICs 8 Ch T1/E1 Framer
• Manufacturer: Exar Corporation

Specifications of XRT84L38IB

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

REV. 1.0.1
B
IT
N
UMBER
6
5
4
3
2
1
0
Error Insertion
Data Inversion Select
Receive PRBS Lock
Indication
Receive PRBS Block
Enable
Transmit PRBS Block
Enable
Receive DS1/E1 Framer
Bypassed
Transmit DS1/E1 Framer
Bypassed
B
IT
N
AME
B
IT
R/W
R/W
R/W
R/W
R/W
R/W
R/W
T
YPE
Error Insertion:
A zero to one transition of this bit will cause one bit of the outgo-
ing transmit data inverted.
Data Inversion Select:
When this bit is set to 0:
The outgoing transmit data and incoming receive data are not
changed.
When this bit is set to 1:
The outgoing transmit data and incoming receive data are
inverted.
Receive PRBS Lock Indication:
If the Receive PRBS block is enabled, this bit indicates whether
a PRBS pattern is found in the incoming received data and the
PRBS pattern is locked.
When this bit is set to 0:
There is no PRBS pattern found and locked in the incoming
received data stream.
When this bit is set to 1:
A PRBS pattern found and locked in the incoming received data
stream.
Receive PRBS Block Enable :
When this bit is set to 0:
The Receive PRBS block is disabled. The framer will not check
the incoming received data for PRBS pattern.
When this bit is set to 1:
The Receive PRBS block is enabled. The framer will check the
incoming received data for PRBS pattern.
Transmit PRBS Block Enable :
When this bit is set to 0:
The Transmit PRBS block is disabled. The framer will not insert
PRBS pattern into the outgoing transmit data stream.
When this bit is set to 1:
The Transmit PRBS block is enabled. The framer will insert
PRBS pattern into the outgoing transmit data stream.
Receive DS1/E1 Framer Bypassed:
When this bit is set to 0:
The Receive DS1/E1 Framer is not bypassed.
When this bit is set to 1:
The Receive DS1/E1 Framer is bypassed.
Transmit DS1/E1 Framer Bypassed:
When this bit is set to 0:
The Transmit DS1/E1 framer is not bypassed.
When this bit is set to 1:
The Transmit DS1/E1 framer is bypassed. Unframed DS1/E1
payload data are passed from backplane interface into the DS1/
E1 line.
115
B
IT
D
ESCRIPTION
OCTAL T1/E1/J1 FRAMER
XRT84L38