I. Nhanganyaya
Crystal Oscillator (inonzi XO) chimwe chezvinhu zvakakosha mumidziyo yemazuva ano yemagetsi. Mumasevha masisitimu, XO inobata basa re "nguva yekurevera", ichipa yakagadzikana uye yakarurama masaini masaini ehurongwa hwese. Nekuwedzera kwezviyero zve data data uye kuwedzera kudiwa kwepamusoro kuvimbika uye kushanda kwepamusoro, basa re XOs mumaseva rave rakakosha zvikuru.
II. Nheyo dzekutanga dzeCrystal Oscillators
XO inowanzoshandisa quartz crystal, iyo ine piezoelectric effect uye inogona kuunza mechanical vibration kana voltage yaiswa. Nekushandura mechanical vibration kuita chiratidzo chemagetsi chine frequency yakagadzikana zvakanyanya kuburikidza nedunhu, chiratidzo chewachi chinodiwa nehurongwa chinoumbwa. Iyo frequency yeXO inowanzosiyana kubva pamakumi akati wandei e kHz kusvika kumazana akati wandei eMHz.
III. Makiyi Ekushandisa Mamiriro eCrystal Oscillators mumaSeva
Motherboard Clock Generation
Masevha anoda masaini akawanda ewachi pabhodhi reamai kuti arongedze kushanda kwemamodule akawanda senge processors, ndangariro, PCIe mabhazi, uye network controller. MaXO anogadzira masiginecha ewachi akawanda akasiyana-siyana kuburikidza nePLL (Phase-Yakakiya Loop) maseketi kuitira kuona kuwiriraniswa pakati pezvikamu zvakasiyana.
processor uye Chipset Synchronization
MaCPU nemachipsets zvinoda kudzikama kwereferensi kune yakakwirira-inomhanya kuchinjanisa data. XOs inopa zvikwangwani zvewachi zvema modules aya, uye kugadzikana kweiyo frequency kunobata zvakananga kuita kweprocessor uye kuenderana kwedata.
Network Kukurukurirana Clock
MaServer Network Interface Cards (NICs) anowanzoda nguva yakareba-yakanyatso kuwiriranisa, kunyanya mumamiriro ekushandisa akadai seyepamusoro-kutengesa kakawanda uye kuwiriranisa data. MaXO anopa mawachi epamusoro-echokwadi etiweki PHY neMAC layers, uye zvinhu zvakakosha kuti uwane kuwiriraniswa kwenetiweki.
Kudzora Kudzora uye Kutendeseka Kwedata
Chengetedza subsystems senge RAID controllers uye NVMe controllers vanotsamira pachokwadi wachi chiratidzo chekuronga data uye kugadzirisa kukanganisa. MaXO epamusoro-emhando yepamusoro anogona kunatsa kugadzikana kwemasisitimu ekuchengetera uye kurongeka kwedata.
Distributed Time Synchronization
Muzvivakwa zvemazuva ano zvekombuyuta (zvakadai seHPC,-nzvimbo dzekutengesa nguva zhinji), PTP (Precision Time Protocol) kana NTP (Network Time Protocol) dzinoshandiswa kuwiriranisa nguva. Yakakwirira-kugadzikana kweXOs (semuenzaniso, OCXO) inoshanda sereferensi yenguva yemuno, zvichibatsira kudzikisira nguva uye kunatsurudza kurongeka kwehurongwa hwese.
IV. Makiyi Matsanangudzo Zvinodiwa
Paunenge uchishandisa maXO munzvimbo dzeseva, zvinotevera zvakakosha tekinoroji zvirevo zvinoda kutariswa pa:
|
Frequency (MHz/kHz) |
Frequency Category |
Typical Application Modules |
Tsanangudzo/Mashoko |
|
32.768 kHz |
Yakaderera-Frequency Clock |
RTC (Chaiyo-Nguva Clock) |
Inoshandiswa kuchengetedza nguva kana sisitimu yakamira |
|
12/24/48 MHz |
General Control Frequency |
USB controller, yakamisikidzwa controller, nezvimwe. |
Yakajairika mukukurukurirana kweparipheral |
|
14.318 MHz |
Traditional Reference Frequency |
BIOS wachi, mamwe ekare wachi machipisi |
Zvishoma nezvishoma zvakapedzwa mumabhodhi emazuva ano |
|
25 MHz |
Reference XO |
Network PHY, SATA, USB, mamaboard wachi jenareta |
A yakajairika referenzi frequency |
|
100 MHz |
Motherboard Reference |
CPU BCLK, PCIe wachi, PLL yekuisa |
General motherboard clock source |
|
125 MHz |
Network Interface Frequency |
Gigabit Ethernet |
SerDes kana PHY referensi wachi |
|
156.250 MHz |
High-Speed Network Frequency |
10G/25G/40G/100G Ethernet interfaces |
SerDes wachi, inowanikwa mu-inomhanya maNICs |
|
200 MHz |
Memory Reference Frequency |
DDR3/DDR4 controller |
Iyo chaiyo DDR frequency ndiyo kukosha mushure mekuwedzera kuwanda |
|
312.5 / 625 MHz |
SerDes Frequency |
High-netiweki inomhanya, PCIe PHY |
Serial kukurukurirana kutapurirana wachi |
|
400-800 MHz |
DDR5 Reference Clock |
DDR5 memory system |
DDR5 ine yakakwira frequency uye yakaomesesa zvinodiwa zvewachi |
|
2.5–5.0+ GHz |
CPU Core Frequency |
processor core |
Yakatorwa kubva kuBCLK (semuenzaniso, 100 MHz) mushure mekuwedzera kuwanda |
VI. Mhedziso
Kunyangwe XO ingori chikamu chidiki museva, basa rayo rakakosha. Kungave kuri kugadzirisa data, kutaurirana netiweki, kana kuwiriranisa nguva, yakagadzikana uye yakavimbika masaini masaini ndiyo hwaro hwekushanda kwehurongwa. Nekuenderera mberi kwekuvandudzwa kwe server performance, zvinodiwa zvemaXO zviri kuwedzerawo. Kusarudza mhinduro yakakodzera yeXO ndeimwe yekiyi dzekuve nechokwadi chekuti-nguva yakareba yakagadzikana kushanda kwemasevha masisitimu.
Hangjing yakapa huwandu hukuru hwevatengi muindasitiri yeseva, ine yakapfuma XO yekufananidza uye mhinduro, uye inogona kupa inoenderana tekinoroji rutsigiro.