XRT94L43IB-F Exar Corporation, XRT94L43IB-F Datasheet - Page 99

• 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

STS-3/STM-1 TELECOM BUS INTERFACE - RECEIVE DIRECTION
XRT94L43
SONET/SDH OC-12 TO 12XDS3/E3 MAPPER
P
C23
IN
#
STS3RxD_C1J1_0
EG_DS3E3_FP_8
TxSTS1FP_8
RxSBFrame_0
S
IGNAL
N
AME
I/O
O
S
CMOS STS-3/STM-1 Receive Telecom Bus - C1/J1 Byte Phase Indicator
T
IGNAL
YPE
Output Signal - Channel 0; Egress Direction DS3/E3 Frame Genera-
tor Block Framing Pulse Output pin - Channel 8; Transmit STS-1
Framing Pulse Output pin - Channel 8:
The function of this output pin depends upon whether or not theSTS-3/
STM-1 Telecom Bus Interface for STS-3/STM-1 Channel 0 has been
enabled.
If STS-3/STM-1 Telecom Bus (associatd with STS-3/STM-1 Channel
0) has been enabled - STS-3/STM-1 Receive Telecom Bus - C1/J1
Byte Phase Indicator Output Signal:
This output pin pulses "High" under the following two conditions.
1. Whenever the C1 byte is being output via the STS3RxD_D_0[7:0] out-
put, and
2. Whenever the J1 byte is being output via the STS3RxD_D_0[7:0] out-
put.1:
N
OTES
1. The STS-3/STM-1 Receive (Drop) Telecom Bus (associated
2. The STS-3/STM-1 Receive (Drop) Telecom Bus (associated
:
with Channel 0) will indicate that it is transmitting the C1 byte
(via the STS3RxD_D_0[7:0] output pins), by pulsing this output
pin "High" (for one period of STS3RXD_CLK_0) and keeping
the STS3RXD_PL_0 output pin pulled "Low".
with Channel 0) will indicate that it is transmitting the J1 byte (via
the STS3RXD_D_0[7:0] output pins), by pulsing this output pin
"High" (for one period of STS3RXD_CLK_0) while the
STS3TXD_PL_0 output pin is pulled "High".
93
D
ESCRIPTION
REV. 1.0.2