XRT94L31IB-L Exar Corporation, XRT94L31IB-L Datasheet - Page 123

• Manufacturer Part Number: XRT94L31IB-L
• Description: IC MAPPER DS3/E3/STS-1 504TBGA
• Manufacturer: Exar Corporation

Specifications of XRT94L31IB-L

• Applications: Network Switches
• Interface: Bus
• Voltage - Supply: 3.14 V ~ 3.47 V
• Package / Case: 504-LBGA
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

REV. 1.0.1
N
The Receive TOH Overhead Output port is used to extract out the values of the TOH bytes within the incoming
STS-3/STM-1 data-stream. All of the Receive TOH Overhead Output port signals are updated upon the falling
edge of RxTOHClk. The timing wave-form and information for the Receive TOH Overhead Output Port is
presented below.
F
1.10
S
OTE
IGURE
YMBOL
t25
t26
: The values for t25 and t26 can be found in
26. I
RECEIVE TOH OVERHEAD OUTPUT PORT
Falling edge of TxTOHClk to rising edge of TxLDCCEnable
TxLDCC Data to rising edge of TxTOHClk set-up time
TxLDCCEnb
LLUSTRATION OF THE
TxTOHClk
T
ABLE
TxLDCC
27: T
IMING
I
NFORMATION FOR THE
T
IMING
D
ESCRIPTION
W
AVE
t25
Table 27
-
FORM OF THE
3-CHANNEL DS3/E3/STS-1 TO STS-3/STM-1 MAPPER IC
123
T
RANSMIT
T
RANSMIT
L
INE
t26
DCC I
L
INE
NSERTION
DCC I
-0.5ns
M
NSERTION
4ns
IN
I
.
NPUT
P
I
T
NPUT
ORT
YP
XRT94L31
.
P
ORT
0.2ns
M
AX
.