xrt75r03 Exar Corporation, xrt75r03 Datasheet - Page 82

• Manufacturer Part Number: xrt75r03
• Description: Xrt75r03 -multi-channel Line Interface Unit Liu Family Desynchronizer And Jitter Attenuator With R3 Technologytm
• Manufacturer: Exar Corporation

XRT75R03
REV. 1.0.8
B
IT
N
UMBER
2
1
0
Receive Equalizer
LOSMUT Enable
Receive Monitor
Mode Enable
THREE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR
Enable
N
AME
T
R/W
R/W
R/W
YPE
D
V
EFAULT
ALUE
0
0
0
79
Muting upon LOS Enable - Channel_n:
This READ/WRITE bit-field is used to configure the
Receive Section (within Channel_n) to automatically pull
their corresponding Recovered Data Output pins (e.g.,
RPOS_n and RNEG_n) to GND anytime (and for the dura-
tion that) the Receive Section declares the LOS defect
condition. In other words, this feature (if enabled) will
cause the Receive Channel to automatically mute the
Recovered data anytime (and for the duration that) the
Receive Section declares the LOS defect condition.
0 - Disables the Muting upon LOS feature. In this setting
the Receive Section will NOT automatically mute the
Recovered Data whenever it is declaring the LOS defect
condition.
1 - Enables the Muting upon LOS feature. In this setting
the Receive Section will automatically mute the Recovered
Data whenever it is declaring the LOS defect condition.
Receive Monitor Mode Enable - Channel_n:
This READ/WRITE bit-field is used to configure the
Receive Section of Channel_n to operate in the Receive
Monitor Mode.
If the user configures the Receive Section to operate in the
Receive Monitor Mode, then it will be able to receive a
nominal DSX-3/STSX-1 signal that has been attenuated by
20dB of flat loss along with 6dB of cable loss, in an error-
free manner. However, internal LOS circuitry is sup-
pressed and LOS will never assert nor LOS be declared
when operating under this mode.
0 - Configures the corresponding channel to operate in the
Normal Mode.
1 - Configure the corresponding channel to operate in the
Receive Monitor Mode.
Receive Equalizer Enable - Channel_n:
This READ/WRITE register bit is used to either enable or
disable the Receive Equalizer block within the Receive
Section of Channel_n, as listed below.
0 - Disables the Receive Equalizer within the correspond-
ing channel.
1 - Enables the Receive Equalizer within the correspond-
ing channel.
N
OTE
: For virtually all applications, we recommend that
the user set this bit-field to "1" (for all three
channels) and enable the Receive Equalizer.
D
ESCRIPTION
xr
xr
xr
xr