XRT75R12D_06 Datasheet, PDF (83/134 Pages) Exar Corporation – TWELVE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET

XRT75R12D
REV. 1.0.1 TWELVE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER
RECEIVE CONTROL REGISTER - CHANNEL N ADDRESS LOCATION = 0XM5
BIT NUMBER
NAME
TYPE
DESCRIPTION
1
Receive Monitor R/W Receive Monitor Mode Enable - Channel_n:
Mode Enable
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 suppressed 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.
0
Receive Equalizer R/W Receive Equalizer Enable - Channel_n:
Enable
This READ/WRITE register bit is used to enable or disable the Receive
Equalizer block within the Receive Section of Channel_n, as listed below.
0 - Disables the Receive Equalizer within the corresponding channel.
1 - Enables the Receive Equalizer within the corresponding channel.
NOTE: For virtually all applications, we recommend that the user set this bit-
field to "1" (for all channels) and enable the Receive Equalizer.
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