XRT94L43IB-F Exar Corporation, XRT94L43IB-F Datasheet - Page 318

• 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
N
The Transmit Order-wire Byte Overhead Input Port provides a dedicated port for the user to insert his/her own
value for the E1, F1 and E2 bytes within the outbound STS-12/STM-4 data-stream. The user should note that
the TxE1F1E2 input pin is sampled (by the Transmit Order-wire Byte Overhead Input Port) upon the rising
edge of TxTOHClk. All of the remaining signals (e.g., TxE1F1E2Enable, TxE1F1E2Frame) are updated upon
the falling edge of TxTOHClk.
Overhead Input Port is presented below.
F
8.0 TRANSMIT ORDERWIRE (E1, F1, E2) BYTE OVERHEAD INPUT PORT
8.1
OTE
IGURE
S
YMBOL
: The values for t
t
t
t
18
19
20
23. T
Transmit E1, F1, E2 (Order-wire) Byte Overhead Input Port
TxPOHEnable
Falling edge of TxPOHClk to rising edge of TxPOHFrame and
TxPOHEnable
TxPOHIns to rising edge of TxPOHClk set-up time
TxPOH Data to rising edge of TxPOHClk set-up time
TxPOHFram e
IMING
TxPOHClk
TxPOHIns
T
ABLE
TxPOH
W
18
AVEFORM OF THE
, t
18: T
19
and t
IMING
20
can be found in
I
D
NFORMATION FOR THE
The timing waveform and information for the Transmit Order-wire Byte
ESCRIPTION
T
RANSMIT
t
18
Table 18
POH O
t
19
312
T
VERHEAD
.
RANSMIT
SONET/SDH OC-12 TO 12XDS3/E3 MAPPER
I
POH O
NPUT
t
20
P
-1.5ns
15ns
14ns
M
ORT
VERHEAD
IN
.
I
NPUT
T
YP
P
.
ORT
XRT94L43
M
3ns
AX
.