XRT75R03IVTR-F Exar Corporation, XRT75R03IVTR-F Datasheet - Page 16

• Manufacturer Part Number: XRT75R03IVTR-F
• Description: IC LIU E3/DS3/STS-1 3CH 128LQFP
• Manufacturer: Exar Corporation

Specifications of XRT75R03IVTR-F

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

SYSTEM-SIDE RECEIVE OUTPUT AND RECEIVE CONTROL PINS
XRT75R03
REV. 1.0.8
P
69
68
IN
#
S
IGNAL
RxMON/
RxON/
SDO
SDI
THREE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR
N
AME
T
YPE
I
I
Receiver Monitor Mode Enable:
This input pin permits the user to configure each of the three (3) Receive Sec-
tions within the XRT75R03 device, into the Receiver Monitor Mode.
If the user configures each of the Receive Sections into the Receive Monitor
Mode, then each of the Receiver Sections 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. This allows monitoring very weak
signal, however the internal LOS circuitry is suppressed and LOS will never
assert nor LOS be declared when operating under this mode.
"Low" - Configures each of the Receive Sections to operate in the Normal
Mode.
"High" - Configures each of the Receive Sections to operate in the Receive
Monitor Mode.
N
Receive ON:
This input pin permits the user to either turn on or turn off each of the three (3)
Receive Sections within the XRT75R03. If the user turns on the Receive Sec-
tions of each channel, then all three channels will begin to receive the incoming
DS3, E3 or STS-1 data-streams via the RTIP_n and RRING_n input pins.
Conversely, if the user turns off the Receive Section, then the entire Receive
Section (e.g., the AGC and Receive Equalizer blocks, Clock Recovery PLL,
etc.) will be powered down.
"Low" - Shuts off the Receive Sections within each of the three (3) Channels in
the XRT75R03.
"High" - Turns on the Receive Sections within each of the three (3) Channels in
the XRT75R03.
N
OTES
OTES
1. This input pin will function as the SDO (Serial Data Output pin within
2. This configuration setting applies globally to all three (3) of the
3. In HOST Mode, each channel can be independently configured to be a
1. This input pin will function as the SDI (Serial Data Input pin within the
2. This configuration setting applies globally to all three (3) of the
3. This pin is internally pulled low.
:
:
the Microprocessor Serial Interface) whenever the XRT75R03 has
been configured to operate in the Host Mode.
channels within the XRT75R03.
monitoring channel by setting the bits in the channel control registers.
Microprocessor Serial Interface) whenever the XRT75R03 has been
configured to operate in the Host Mode.
channels within the XRT75R03 device.
13
D
ESCRIPTION
xr
xr
xr
xr