XRT94L43IB-F Exar Corporation, XRT94L43IB-F Datasheet - Page 228

• 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
A20
IN
#
STS3RxD_CLK_0
RxSBClkLLOOP_0
S
IGNAL
N
AME
I/O
O
S
CMOS Receive STS-3/STM-1 Telecom Bus Clock Output - Channel
T
IGNAL
YPE
0; LLOOP_0 (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 0 is enabled.
If STS-3/STM-1 Telecom Bus (Channel 0) has been enabled
- STS-3/STM-1 Receive Telecom Bus Clock Output - Chan-
nel 0; STS3RxD_CLK_0:
All signals, which is output via the Receive Telecom Bus -
Channel 0 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 0) is disabled -
LLOOP_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 0 (LLOOP) within the Line Interface
Drive Register associated with Channel 0 (Indirect Address =
0x1E, 0x80), (Direct Address = 0x1F80).
N
222
OTE
STS3RxD_D_0[7:0]
STS3RxD_ALARM_0
STS3RxD_DP_0
STS3RxD_PL_0
STS3RxD_C1J1_0
:
LLOOP_0 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