XRT94L31IB-L Exar Corporation, XRT94L31IB-L Datasheet - Page 108

• 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
In the Receive STS-3/STM-1 Telecom Bus Interface, all of the signals (which are input via this Bus Interface)
are sampled upon the rising edge of RxD_CLK (19.44MHz clock signal).
Figure 14
be received by the Receive STS-3/STM-1 Telecom Bus Interface.
F
T
1.3.1.2
OTE
IGURE
X
A_CLK
S
: The value for t4, t5, t5A and t5B can be found in
YMBOL
t5A
t5B
t1
t4
t5
13. A
presents an illustration of the waveforms and the timing parameters (t2 and t3) of the signals that will
OUTPUT PIN WITHIN THE
T
ABLE
N
The Receive STS-3/STM-1 Telecom Bus Interface Timing
Rising edge of TxA_CLK to updates in TxA_D[7:0], TxA_PL,
TxA_C1J1 and TxA_DP
TxSBFP Set-up time to rising edge of TxA_CLK
TxA_CLK rising edge to TxSBFP Hold time
TxSBFP Set-up time to rising edge of REFCLK
Rising edge of REFCLK to TxSBFP Hold Time
I
LLUSTRATION OF THE TIMING RELATIONSHIPS BETWEEN THE
TxA_CLK
TxA_D[7:0]
8: T
REFCLK
TxSBFP
IMING
I
NFORMATION FOR THE
Data
T
RANSMIT
D
ESCRIPTION
t5A
A1
t4
t5B
STS-3/STM-1 T
t5
A1
T
Table 8
RANSMIT
108
.
ELECOM
STS-3/STM-1 T
Data
B
US
Data
I
T
NTERFACE
1.7ns
8.5ns
X
M
ELECOM
0ns
5ns
0ns
SBFP
IN
.
Data
INPUT PIN AND THE
B
US
T
I
NTERFACE
YP
.
REV. 1.0.1
7.7ns
M
AX
.