XRT94L43IB-F Exar Corporation, XRT94L43IB-F Datasheet - Page 53

• Manufacturer Part Number: XRT94L43IB-F
• Description: IC MAPPER SONET/SDH OC12 516BGA
• Manufacturer: Exar Corporation

Specifications of XRT94L43IB-F

• Applications: Network Switches
• Interface: Bus
• Voltage - Supply: 2.5V, 3.3V
• Package / Case: 516-BBGA
• Mounting Type: Surface Mount
• Product: Mapper
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

XRT94L43
SONET/SDH OC-12 TO 12XDS3/E3 MAPPER
STS-3/STM-1 TELECOM BUS INTERFACE - TRANSMIT DIRECTION
AF22
P
IN
#
STS3TxA_ALARM_3
ING_LCV_IN_3
ING_RxNEG_IN_3
TxSTS1PL_3
S
IGNAL
N
AME
I/O
I/O
S
CMOS
T
TTL/
IGNAL
YPE
Transmit STS-3/STM-1 Telecom Bus - Alarm Indicator Input -
Channel 3; DS3/E3 Framer Block LCV/RxNEG Input Pin - Chan-
nel 3:
The function of this input pin depends upon whether or not the STS-
3/STM-1 Telecom Bus Interface for Channel 3 has been enabled.
If STS-3/STM-1 Telecom Bus (Channel 3) has been enabled -
Transmit STS-3/STM-1 Telecom Bus Interface - Alarm Indicator
Input:
This input pin pulses "High" coincident to any STS-1 signal (which is
carrying the AIS-P indicator) being applied to the STS3TxA_D_3[7:0]
input data bus.
N
If STS-3/STM-1 Telecom Bus (Channel 3) is disabled - DS3/E3
Framer Block LCV/RxNEG Input Pin - Channel 3):
If the STS-3/STM-1 Telecom Bus (Channel 3) is disabled and if the
DS3/E3 Framer block (associated with channel 3) is enabled then
this pin will function as either an LCV or an RxNEG input pin.
If Channel 3 is configured to operate in the Single-Rail Mode,
and if the Primary Frame Synchronizer block is configured to
operate in the Ingress Path - ING_LCV_IN_3 Input pin:
If the Primary Frame Syncronizer block (associated with Channel 3)
is configured to operate in the Ingress Path, and if Channel 3 is con-
figured to operate in the Single-Rail Mode, then this input pin will
function as the "LCV" (Line Code Violation) input pin. In this case,
the user should connect this particular input pin to the "LCV" output
pin of the corresponding DS3/E3/STS-1 LIU Channel.
If Channel 3 is configured to operate in the Dual-Rail Mode, and
if the Primary Frame Synchronizer block is configured to oper-
ate in the Ingress Path - ING_RxNEG_IN_3:
If the Primary Frame Synchronizer block (associated with Channel 3)
is configured to operate in the Ingress Path and if Channel 3 is con-
figured to operate in the Dual-Rail Mode, then this input pin will func-
tion as the "RxNEG" (Negative Polarity Data) input pin. In this case,
the user should connect this particular input to the "RxNEG" output
pin of the corresponding DS3/E3/STS-1 LIU Channel.
N
OTE
OTE
: If the STS3TxA_ALARM_3 input signal pulses "High" for any
: This pin is inactive if the Frame Generator block, associated
47
given STS-1 signal (within the incoming STS-3), then the
XRT94L43 will automatically declare an AIS-P for that STS-1
channel.
with Channel 3 is by-passed
D
ESCRIPTION
REV. 1.0.2