參數(shù)資料
型號(hào): XRT91L30
廠商: Exar Corporation
英文描述: STS-12/STM-4 OR STS-3/STM-1 SONET/SDH TRANSCEIVER
中文描述: STS-12/STM-4或STS-3/STM-1的SONET / SDH收發(fā)器
文件頁數(shù): 30/40頁
文件大小: 387K
代理商: XRT91L30
XRT91L30
STS-12/STM-4 OR STS-3/STM-1 SONET/SDH TRANSCEIVER
PRELIMINARY
xr
REV. P1.0.8
28
3.8
The 622.08 Mbps STS-12/STM-4 or 155.52 Mbps STS-3/STM-1 transmit serial output is avaliable on TXOP/N
pins. The transmit serial output can be AC or DC coupled to an optical module or electrical interface. A
simplified DC coupling block diagram is shown in Figure 17.
Transmit Serial Output Control
N
OTE
:
Some optical modules integrate AC coupling capacitors within the module. AC or DC coupling is largely specific to
system design and optical module of choice.
F
IGURE
16. L
OOP
T
IMING
M
ODE
U
SING
I
NTERNAL
CDR
OR
AN
E
XTERNAL
R
ECOVERED
C
LOCK
F
IGURE
17. T
RANSMIT
S
ERIAL
O
UTPUT
I
NTERFACE
BLOCK
8
WP
RP
RXIP
RXIN
M
CDR
M
M
622.08/
155.52MHz
CMU
REFCLKP
REFCLKN
TTLREFCLK
CDRDIS
Div by 8
Clk
Data
~
~
XRT91L30
LOOPTIME
XRXCLKIP
XRXCLKIN
DATA
PISO
to Retimer
SIPO
Retimer
TXOP
TXON
CLK
8
RXDO[7:0]
RXPCLKO
DATA
CLK
TXPCLK_IO
PIO_CTRL
ENB
ENB
M
0
1
Div by
8
8
TXDI[7:0]
Optical Module
TXOP
TXON
Optical Fiber
XRT91L30
STS-12/STM-4
or
STS-3/STM-1
Transceiver
120
82
Install terminators as close to
optical module transmit pins
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參數(shù)描述
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