XRT94L43IB-F Exar Corporation, XRT94L43IB-F Datasheet - Page 128

• 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
REV. 1.0.2
AB21
P
IN
#
STS3RxD_D_3_2
DS3/E3/
STS1_Data_OUT_
3
RxSBData_2
S
IGNAL
N
AME
I/O
O
S
CMOS Receive STS-3/STM-1 Telecom Bus - Channel 3 - Output Data Bus
T
IGNAL
YPE
Pin Number 2/DS3/E3 Framer or Transmit STS-1 TOH Processor
block line interface output Pin - Channel 3 (DS3/E3/
STS1_DATA_OUT_3):
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 2:
STSRxD_D_3_2:
This output pin along with STS3RxD_D_3[7:3] and STS3RxD_D_3[1:0]
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 - DS3/E3/
STS1_DATA_OUT Line Interface Data output Pin - Channel 3.
This pin outputs single-rail DS3, E3 or STS-1 data to a DS3/E3/STS-1
LIU IC. This output pin should be connected to the TPOS/TDATA input of
the DS3/E3/STS-1 LIU IC (corresponding to Channel 3). By default, the
data that is output via this pin will be updated upon the rising edge of the
DS3/E3/STS1_CLK_OUT_3 signal pin number AB20.
For DS3/E3 Applications
The XRT94L43 can be configured to update this output signal upon the
falling edge of the DS3/E3/STS1_CLK_3 signal by setting Bit 2 (DS3/E3/
STS1_CLK_OUT Invert), within the I/O Control Register - Channel 3
(Indirect Address = 0x4E, 0x01), (Direct Address = 0x4F01) to a "1".
For STS-1 Applications
The XRT94L43 can not be configured to update the DS3/E3/
STS1_DATA_OUT_3 signal upon the falling edge of DS3/E3/
STS1_CLK_OUT_3.
122
SONET/SDH OC-12 TO 12XDS3/E3 MAPPER
D
ESCRIPTION
XRT94L43