XRT94L43IB-F Exar Corporation, XRT94L43IB-F Datasheet - Page 262

• 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

REV. 1.0.2
STS-3/STM-1 TELECOM BUS INTERFACE - RECEIVE DIRECTION
P
Y24
IN
#
STS3RxD_D_2_0
TxLEV_2
RxSBData_0
S
IGNAL
N
AME
I/O
O
S
CMOS Receive STS-3/STM-1 Telecom Bus - Channel 2 - Output
T
IGNAL
YPE
Data Bus Pin Number 0/TxLEV_2 (General Purpose) Out-
put Pin:
The function of this output pin depends upon whether or not
theSTS-3/STM-1 Telecom Bus Interface, associated with
Channel 2 is enabled.
If STS-3/STM-1 Telecom Bus (Channel 2) has been enabled
- STS-3/STM-1 Receive Telecom Bus - Output Data bus Pin
Number 0: STSRxD_D_2_0:
This output pin along with STS3RxD_D_2[7:1] function as the
STS-3/STM-1 Receive (Drop) Telecom Bus - Output Data Bus
for Channel 2. The STS-3/STM-1 Telecom Bus Interface will
update the data via this output upon the rising edge of
STS3RxD_CLK_2.
N
If STS-3/STM-1 Telecom Bus (Channel 2) is disabled -
TXLEV_2 (General Purpose) output Pin:
This output pin can be used as a general purpose output pin.
The state of this output pin can be controlled by writing the
appropriate value into Bit 2 (TxLEV) within the Line Interface
Drive Register associated with Channel 2 (Indirect Address =
0x3E, 0x80), (Direct Address = 0x3F80).
N
256
OTE
OTE
: This input pin functions as the LSB (Least Significant
:
Bit) of the Receive (Drop) Telecom Bus for Channel 2.
TxLEV_2 because one possible application is to tie this
output pin to a TxLEV (Transmit Line Build-Out
Disable) input pin from one of Exar's XRT73L0X/
XRT75L0X DS3/E3/STS-1 LIU devices. However, this
output pin, and the corresponding register bit can be
used for any purpose.
For Product Legacy purposes, this pin is called
SONET/SDH OC-12 TO 12XDS3/E3 MAPPER
D
ESCRIPTION
XRT94L43