XRT94L43IB-F Exar Corporation, XRT94L43IB-F Datasheet - Page 127

• 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
AC19
AE21
P
IN
#
STS3RxD_D_3_0
TxLEV_3
RxSBData_0
STS3RxD_D_3_1
ENCODIS_3
RxSBData_1
S
IGNAL
N
AME
I/O
O
O
S
CMOS Receive STS-3/STM-1 Telecom Bus - Channel 3 - Output Data Bus
CMOS Receive STS-3/STM-1 Telecom Bus - Channel 3 - Output Data Bus
T
IGNAL
YPE
Pin Number 0/TxLEV_3 (General Purpose) Output Pin:
The function of this output pin depends upon whether or not theSTS-3/
STM-1 Telecom Bus Interface, associated with Channel 3 is enabled.
If STS-3/STM-1 Telecom Bus (Channel 3) has been enabled - STS-3/
STM-1 Receive Telecom Bus - Output Data bus Pin Number 0:
STSRxD_D_3_0:
This output pin along with STS3RxD_D_3[7:1] function as the STS-3/
STM-1 Receive (Drop) Telecom Bus - Output Data Bus for Channel 3.
The STS-3/STM-1 Telecom Bus Interface will update the data via this
output upon the rising edge of STS3RxD_CLK_3.
N
If STS-3/STM-1 Telecom Bus (Channel 3) is disabled - TXLEV_3
(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 associ-
ated with Channel 3 (Indirect Address = 0x4E, 0x80), (Direct Address =
0x4F80).
N
Pin Number 1/ENCODIS_3 (General Purpose) Output Pin:
The function of this output pin depends upon whether or not theSTS-3/
STM-1 Telecom Bus Interface, associated with Channel 3 is enabled.
If STS-3/STM-1 Telecom Bus (Channel 3) has been enabled - STS-3/
STM-1 Receive Telecom Bus - Output Data bus Pin Number 1:
STSRxD_D_3_1:
This output pin along with STS3RxD_D_3[7:2] and STS3RxD_D_3_0
function as the STS-3/STM-1 Receive (Drop) Telecom Bus - Output Data
Bus for Channel 3. The STS-3/STM-1 Telecom Bus Interface will update
the data via this output upon the rising edge of STS3RxD_CLK_3.
If STS-3/STM-1 Telecom Bus (Channel 3) is disabled - ENCODIS_3
(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 3 (ENCODIS) within the Line Interface Drive Register asso-
ciated with Channel 3 (Indirect Address = 0x4E, 0x80), (Direct Address =
0x4F80).
N
OTE
OTE
OTE
: This input pin functions as the LSB (Least Significant Bit) of the
: For Product Legacy purposes, this pin is called TxLEV_3 because
: For Product Legacy purposes, this pin is called ENCODIS_3
Receive (Drop) Telecom Bus for Channel 3.
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.
because one possible application is to tie this output pin to an
ENCODIS (B3ZS/HDB3 Encoder 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.
121
D
ESCRIPTION
REV. 1.0.2