XRT94L43IB-F Exar Corporation, XRT94L43IB-F Datasheet - Page 161

• 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-12/STM-4 TELECOM BUS INTERFACE - TRANSMIT DIRECTION
P
G1
H5
E1
E3
F3
J5
J2
F2
F1
IN
#
TxA_PL
TxA_D0
TxA_D1
TxA_D2
TxA_D3
TxA_D4
TxA_D5
TxA_D6
TxA_D7
S
IGNAL
N
AME
I/O
O
O
CMOS
CMOS
S
T
IGNAL
YPE
STS-12/STM-4 Transmit Telecom Bus - Payload Data Indicator Sig-
nal:
This output pin indicates whether or not TOH Transport Overhead
bytes are being output via the TXA_D[7:0] output pins.
This output pin is pulled "Low" for the duration that the STS-12/STM-4
Transmit Telecom Bus is transmitting a Transport Overhead byte via
the TXA_D[7:0] output pins.
Conversely, this output pin is pulled "High" for the duration that the
STS-12/STM-4 Transmit Telecom Bus is transmitting something other
than a Transport Overhead byte (e.g., the POH or STS-1/STS-3c SPE
bytes) via the TXA_D[7:0] output pins.
STS-12/STM-4 Transmit Telecom Bus - Transmit Output Data Bus
pins:
These 8 output pins function as the "STS-12/STM-4 Transmit Telecom
Bus" Transmit Output data bus. If the STS-12/STM-4 Telecom Bus
Interface is enabled, then all STS-12/STM-4 data is output via these
pins (in a byte-wide manner), upon the rising edge of the "TXA_CLK"
output pin.
N
OTES
1. The pin TXA_D7 will output the MSB (Most Significant Bit) of
2. The pin TXA_D0 will output the LSB (Least Significant Bit) of
:
155
each byte that is output via the Transmit STS-12/STM-4
Telecom Bus Interface.
each byte that is output via the Transmit STS-12/STM-4
Telecom Bus Interface.
D
ESCRIPTION
REV. 1.0.2