Electronic Components Datasheet Search |
|
TP3404 Datasheet(PDF) 6 Page - National Semiconductor (TI) |
|
|
TP3404 Datasheet(HTML) 6 Page - National Semiconductor (TI) |
6 / 14 page Functional Description (Continued) Pulse shaping is obtained by means of a Digital to Analog Converter followed by a Continuous Smoothing Filter in or- der to limit RF energy and crosstalk while minimizing Inter- Symbol Interference (ISI) Figure 2 shows the pulse shape at the Lo output while a template for the typical power spectrum transmitted to the line with random data is shown in Figure 3 Each line-driver output Lo0 – Lo3 is designed to drive a transformer through a capacitor and termination resistor A 11 transformer terminated in 100X results in signal ampli- tude of typically 13 Vpk on the line Over-voltage protection must be included in each interface circuit LINE RECEIVE SECTIONS The input of each receive section Li0 – Li3 consists of a continuous anti-alias filter followed by a switched-capacitor low-pass filter designed to limit the noise bandwidth with minimum intersymbol interference To correct pulse attenu- ation and distortion caused by the transmission line an AGC circuit and first-order equalizer adapt to the received pulse shape thus restoring a ‘‘flat’’ channel response with maxi- mum received eye opening over a wide spread of cable attenuation characteristics From the equalized output a DPLL (Digital Phase-Locked Loop) recovers a low-jitter clock for optimum sampling of the received symbols The MCLK input provides the refer- ence clock for the DPLL at 4096 MHz Following detection of the recovered symbols the received data is de-scrambled by the same X9 a X5 a 1 polynomial and presented to the digital system interface circuit When a transmission line is de-activated a Line-Signal De- tect Circuit is enabled to detect the presence of incoming bursts if the far-end starts to activate the loop TLH11924 – 4 FIGURE 2 Typical AMI Waveform at Lo TLH11924 – 5 FIGURE 3 Typical AMI Transmit Spectrum Measured at LO Output (With RGB e 100 Hz) 6 |
Similar Part No. - TP3404 |
|
Similar Description - TP3404 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |