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XRT91L34IV Datasheet(PDF) 9 Page - Exar Corporation

Part # XRT91L34IV
Description  QUAD CHANNEL MULTIRATE STS-12/3/1 AND STM-4/1/0 SONET/SDH CDR
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Manufacturer  EXAR [Exar Corporation]
Direct Link  http://www.exar.com
Logo EXAR - Exar Corporation

XRT91L34IV Datasheet(HTML) 9 Page - Exar Corporation

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XRT91L34
9
REV. 1.0.1
QUAD CHANNEL MULTIRATE STS-12/3/1 AND STM-4/1/0 SONET/SDH CDR
RECEIVER SECTION
NAME
LEVEL
TYPE
PIN
DESCRIPTION
RXDI0P
RXDI0N
RXDI1P
RXDI1N
RXDI2P
RXDI2N
RXDI3P
RXDI3N
LVDS,
Diff LVPECL
I
3
4
11
12
22
21
30
29
Receive Serial Data Input
The differential receive serial data stream of 622.08 Mbps
STS-12/STM-1 or 155.52 Mbps STS-3/STM-1 or 51.84 Mbps
STS-1/STM-0 is applied to these differential input pins. These
pins accept LVDS or Differential LVPECL input standard.
These pins are internally biased to 1.2V via 15k
Ω resistance
and are equipped with a 100
Ω line-to-line internal termination.
RXDO0P
RXDO0N
RXDO1P
RXDO1N
RXDO2P
RXDO2N
RXDO3P
RXDO3N
LVDS,
Diff LVPECL
O
94
93
86
85
75
76
67
68
Recovered Serial Data Output
622.08 Mbps STS-12/STM-4 / 155.52 Mbps STS-3/STM-1 /
51.84 Mbps STS-1/STM-0 differential recovered serial data out-
put that is updated simultaneously on the falling edge of the
corresponding channel RXCLKO output. User selectable LVDS
standard or Differential LVPECL standard output based on
OUTCFG pin state.
RXCLKO0P
RXCLKO0N
RXCLKO1P
RXCLKO1N
RXCLKO2P
RXCLKO2N
RXCLKO3P
RXCLKO3N
LVDS,
Diff LVPECL
O
90
89
82
81
79
80
71
72
Recovered Clock Output
(622.08 MHz/ 155.52 MHz/ 51.84 MHz)
622.08 MHz STS-12/STM-4 / 155.52 MHz STS-3/STM-1 /
51.84 MHz STS-1/STM-0 differential clock output for the corre-
sponding recovered data output RXDO[0:3]P/N. The recovered
serial data output port will be updated on the falling edge of
this clock. User selectable LVDS standard or Differential
LVPECL standard output based on OUTCFG pin state.
LOL0
LOL1
LOL2
LOL3
LVCMOS
O
98
99
63
64
CDR LOL Detect Output
This pin is used to monitor the lock condition of the PLL in the
clock and data recovery unit of each channel.
"Low" = CDR Locked
"High" = CDR Out of Lock
CAP0P
CAP0N
Analog
-
109
108
CDR Non-polarized External Loop Filter Capacitors
Mode of Operation:
1. STS12/STM4: CAP[0:3]P/N = 0.47
µF ± 10% tolerance
2. STS3/STM1: CAP[0:3]P/N = 0.47
µF ± 10% tolerance
3. STS1/STM0: CAP[0:3]P/N = 1.0
µF ± 10% tolerance
Use type X7R or X5R for improved stability over temperature.
(Isolate from noise and place close to pin)
CAP1P
CAP1N
Analog
-
103
102
CAP2P
CAP2N
Analog
-
59
60
CAP3P
CAP3N
Analog
-
53
54


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