XRT94L43IB-F Exar Corporation, XRT94L43IB-F Datasheet - Page 246

• 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
B21
IN
#
STS3RxD_D_0_0
TxLEV_0
RxSBData_0
S
IGNAL
N
AME
I/O
O
S
CMOS Receive STS-3/STM-1 Telecom Bus - Channel 0 - Output
T
IGNAL
YPE
Data Bus Pin Number 0/TxLEV_0 (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 0 is enabled.
If STS-3/STM-1 Telecom Bus (Channel 0) has been enabled
- STS-3/STM-1 Receive Telecom Bus - Output Data bus Pin
Number 0: STSRxD_D_0_0:
This output pin along with STS3RxD_D_0[7:1] function as the
STS-3/STM-1 Receive (Drop) Telecom Bus - Output Data Bus
for Channel 0. The STS-3/STM-1 Telecom Bus Interface will
update the data via this output upon the rising edge of
STS3RxD_CLK_0.
N
If STS-3/STM-1 Telecom Bus (Channel 0) is disabled -
TXLEV_0 (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 0 (Indirect Address =
0x1E, 0x80), (Direct Address = 0x1F80).
N
240
OTE
OTE
: This input pin functions as the LSB (Least Significant
:
Bit) of the Receive (Drop) Telecom Bus for Channel 0.
TxLEV_0 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