參數(shù)資料
型號(hào): XRT94L31_07
廠商: Exar Corporation
英文描述: 3-CHANNEL DS3/E3/STS-1 TO STS-3/STM-1 MAPPER IC
中文描述: 3通道DS3/E3/STS-1給STS-3/STM-1映射器集成電路
文件頁數(shù): 118/133頁
文件大小: 1014K
代理商: XRT94L31_07
XRT94L31
118
3-CHANNEL DS3/E3/STS-1 TO STS-3/STM-1 MAPPER IC
REV. 1.0.1
N
OTE
:
The value for t13 and t14 can be found in
Table 22
.
1.5
TRANSMIT TOH OVERHEAD INPUT PORT
The Transmit TOH Overhead Input Port is used to insert the users own value for the TOH bytes into the
outbound STS-3/STM-1 data-stream.
N
OTE
:
The TxTOHIns and the TxTOH input pins are sampled (by the Transmit TOH Overhead Input Port) upon the rising
edge of TxTOHClk. All of the remaining signals (e.g., TxTOHFrame and TxTOHEnable) are updated upon the
falling edge of TxTOHClk.
The timing wave-form and information for the Transmit TOH Overhead Input Port is presented below.
F
IGURE
21. A
N
I
LLUSTRATION
OF
THE
W
AVEFORMS
OF
THE
S
IGNALS
THAT
ARE
I
NPUT
VIA
THE
T
RANSMIT
STS-1/
STM-0 T
ELECOM
B
US
I
NTERFACE
ASSOCIATED
WITH
C
HANNEL
0 (
WHEN
CONFIGURED
TO
OPERATE
IN
THE
STS-3/
STM-1 M
ODE
)
T
ABLE
22: T
IMING
I
NFORMATION
FOR
THE
T
RANSMIT
STS-1/STM-0 T
ELECOM
B
US
I
NTERFACE
,
FOR
C
HANNEL
0
WHEN
IT
HAS
BEEN
CONFIGURED
TO
OPERATE
IN
THE
STS-3/STM-1 M
ODE
S
YMBOL
D
ESCRIPTION
M
IN
.
T
YP
.
M
AX
.
t13
TxA_D[7:0], TxA_PL, TxA_C1J1, TxA_ALARM and TxA_DP to rising edge
of TxA_CLK set-up time requirements
4ns
t14
Rising edge of TxA_CLK to TxA_D[7:0], TxA_PL, TxA_C1J1, TxA_ALARM
and TxA_DP hold time requirements
0 ns
TxA_CLK
TxA_D[7:0]
TxA_PL
TxA_C1J1
A2 C1 C1
J1 Data Data
t13
t14
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