XRT94L43IB-F Exar Corporation, XRT94L43IB-F Datasheet - Page 230

• 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
W23
IN
#
STS3RxD_CLK_2
RxSBClkLLOOP_2
S
IGNAL
N
AME
I/O
O
S
CMOS Receive STS-3/STM-1 Telecom Bus Clock Output - Channel
T
IGNAL
YPE
2; LLOOP_2 (General Purpose) Output Pin:
The function of this input pin depends upon whether or not
theSTS-3/STM-1 Telecom Bus Interface associated with Chan-
nel 2 is enabled.
If STS-3/STM-1 Telecom Bus (Channel 2) has been enabled
- STS-3/STM-1 Receive Telecom Bus Clock Output - Chan-
nel 2; STS3RxD_CLK_2:
All signals, which is output via the Receive Telecom Bus -
Channel 2 is clocked out upon the rising edge of this clock sig-
nal. This includes the following signals.
•
•
•
•
•
This clock signal will operate at 19.44MHz.
If STS-3/STM-1 Telecom Bus (Channel 2) is disabled -
LLOOP_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 0 (LLOOP) within the Line Interface
Drive Register associated with Channel 2 (Indirect Address =
0x3E, 0x80), (Direct Address = 0x3F80).
N
224
OTE
STS3RxD_D_2[7:0]
STS3RxD_ALARM_2
STS3RxD_DP_2
STS3RxD_PL_2
STS3RxD_C1J1_2
:
LLOOP_2 because one possible application is to tie
this output pin to an LLOOP (Local Loop-back) 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