Zakładka z wyszukiwarką danych komponentów |
|
FW803 Arkusz danych(PDF) 11 Page - Agere Systems |
|
FW803 Arkusz danych(HTML) 11 Page - Agere Systems |
11 / 24 page Agere Systems Inc. 11 Data Sheet, Rev. 3 June 2001 Three-Cable Transceiver/Arbiter Device FW803 PHY IEEE 1394A Application Information (continued) 5-6930 (F) Figure 4. Typical Port Termination Network Crystal Selection Considerations The FW803 is designed to use an external 24.576 MHz crystal connected between the XI and XO terminals to pro- vide the reference for an internal oscillator circuit. IEEE 1394a-2000 standard requires that FW803 have less than ±100 ppm total variation from the nominal data rate, which is directly influenced by the crystal. To achieve this, it is recommended that an oscillator with a nominal 50 ppm or less frequency tolerance be used. The total frequency variation must be kept below ±100 ppm from nominal with some allowance for error introduced by board and device variations. Trade offs between frequency tolerance and stability may be made as long as the total frequency variation is less than ±100 ppm. Load Capacitance The frequency of oscillation is dependent upon the load capacitance specified for the crystal, in parallel resonant mode crystal circuits. Total load capacitance (CL) is a function of not only the discrete load capacitors, but also capacitances from the FW803 board traces and capacitances of the other FW803 connected components. TPBIAS1 TPA1+ TPA1– TPB1+ TPB1– TPBIAS0 TPA0+ TPA0– TPB0+ TPB0– 42 41 40 39 38 37 36 35 34 33 TPBIAS1 56 Ω 56 Ω 56 Ω 56 Ω 5 k Ω 220 pF 0.33 µF IEEE 1394-1995 STANDARD CONNECTOR USE SAME PORT TERMINATION NETWORK AS ILLUSTRATED BELOW. 1 3 5 2 4 6 VG VP CABLE POWER |
Podobny numer części - FW803 |
|
Podobny opis - FW803 |
|
|
Link URL |
Polityka prywatności |
ALLDATASHEET.PL |
Czy Alldatasheet okazała się pomocna? [ DONATE ] |
O Alldatasheet | Reklama | Kontakt | Polityka prywatności | Linki | Lista producentów 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 |