XRT94L31IB-L Exar Corporation, XRT94L31IB-L Datasheet - Page 122

• 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

XRT94L31
3-CHANNEL DS3/E3/STS-1 TO STS-3/STM-1 MAPPER IC
N
The Transmit Section DCC Insertion Input Port provides a dedicated port for the user to insert his/her own
value for the D4 through D12 bytes within the outbound STS-3/STM-1 data-stream. The user should note that
the TxLDCC input pin is sampled (by the Transmit Section DCC Insertion Input Port) upon the rising edge of
TxTOHClk. The TxLDCCEnable output signal is updated upon the falling edge of TxTOHClk. The timing
wave-form and information for the Transmit Line DCC Insertion Input Port is presented below.
F
P
1.9
S
OTE
IGURE
ORT
YMBOL
t23
t24
: The values for t23 and t24 can be found in
25. I
TRANSMIT LINE DCC INSERTION INPUT PORT
T
ABLE
Falling edge of TxTOHClk to rising edge of TxSDCCEnable output delay
TxSDCC Data to rising edge of TxTOHClk set-up time
TxSDCCEnb
LLUSTRATION OF THE
TxTOHClk
TxSDCC
26: T
IMING
I
NFORMATION FOR THE
T
IMING
D
ESCRIPTION
W
AVE
t23
Table 26
-
FORM OF THE
T
RANSMIT
122
.
O
T
RDER
RANSMIT
-W
t24
IRE
S
ECTION
B
YTE
O
DCC O
VERHEAD
-0.4ns
M
4ns
IN
.
VERHEAD
I
NPUT
T
YP
P
.
I
NSERTION
ORT
REV. 1.0.1
0.1ns
M
AX
.