EELXT332PE.G2 S L8L8 Intel, EELXT332PE.G2 S L8L8 Datasheet - Page 6

• Manufacturer Part Number: EELXT332PE.G2 S L8L8
• Manufacturer: Intel

Specifications of EELXT332PE.G2 S L8L8

• Operating Supply Voltage (typ): 5V
• Screening Level: Industrial
• Mounting: Surface Mount
• Operating Supply Voltage (min): 4.75V
• Operating Supply Voltage (max): 5.25V
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Lead Free Status / RoHS Status: Compliant

LXT332 — Dual T1/E1 Line Interface Unit with Crystal-less Jitter Attenuation
1.0
1.1
1.1.1
1.1.2
1.1.3
1.1.4
1.1.5
1.2
1.2.1
6
Overview
In addition to the inherent advantages of a dual LIU, the LXT332 also provides several advanced
features that are not available in other LXT300-series devices. All of the added features are easily
implemented. Many require only a clock pulse to change from one mode to another. Some features
are available in Host mode only.
Standard LXT332 Features
Tri-state Outputs
All LXT332 output pins can be forced to tri-state (high-Z). Tri-state is controlled by the TRSTE
pin.
Bipolar or Unipolar Data I/O
The LXT332 to framer interface can be either bipolar (default) or unipolar (selectable). The
unipolar I/O mode is selected by applying MCLK to the TRSTE pin.
B8ZS or HDB3 Zero Suppression
The LXT332 incorporates zero suppression encoders and decoders for use in the unipolar data I/O
mode. The encoders/decoders can be activated or deactivated by changing the logic level on the re-
mapped TNEG pin.
Selectable Jitter Attenuation
Jitter attenuation can be placed in either the transmit or receive path or deactivated. The Jitter
Attenuation Select (JASEL) pin selects the jitter attenuation path. No crystal is required.
Dual Loopback
Dual Loopback (DLOOP) enables simultaneous loopbacks to both the framer and the line. The
TCLK, TPOS and TNEG framer inputs are routed through the jitter attenuator and looped back to
the RCLK, RPOS and RNEG outputs. The RTIP/RRING line inputs are looped back through the
timing recovery block and line driver onto the TTIP/TRING outputs.
Additional Host-Mode Features
High Frequency Clocks
The LXT332 provides a pair of high frequency clock outputs, one for each LIU. These 8x clocks
(12.352 MHz for T1, 16.384 MHz for E1) are tied to the de-jittered clock from the JA of the
respective LIU.
Datasheet