-Lawan ai FPGA ni hta n bung ai Oscillator ni hpe jai lang ai lam

-Lawan ai FPGA ni hta n bung ai Oscillator ni hpe jai lang ai lam

Differential oscillators ni gaw, -lawan ai FPGA hkrang shapraw ai lam ni hta grai ahkyak ai jai lang lam ni nga ai, grau nna, aten ladaw hkrak ai lam, -hkap la ai lam hpe ninghkap lu ai atsam, signal hpe n-gun jaw ai lam ni hpe grai ra kadawn ai system ni hta, ga shadawn:

Lawan dik ai matut mahkai lam ni (PCIe, SFP+/QSFP, 10G Ethernet, DDR4/DDR5)

-channel law law hte shiga lu la ai ladat ni

-lawan ai matut mahkai ladat ni (SerDes)

Tengman ai hku hkan sa ai ladat ni (ten masat ai, ADC/DAC mawdaw gau ai)

Differential Oscillator ngu ai gaw hpa rai ta?

Differential Oscillator ngu ai gaw, n bung ai nsen ni hpe (LVDS, LVPECL, HCSL zawn re ai) shapraw ya ai, langai hte langai nhtang wa ai ahkying nsen lahkawng (CLK+ hte CLK−) hpe shapraw ya ai, shamu shamawt nga ai crystal oscillator langai mi re. Htunghking hku lang ai langai sha-hpang jahtum na Oscillator ni hte shai ai (ga shadawn, CMOS-pru ai Oscillator ni).

N bung ai masat kumla ni a akyu ni:

-Lawan ai FPGA ni hta n bung ai Oscillator ni hpe jai lang ai lam

-Lawan ai interface ni a matu Reference Ahkying hku nna magam gun ai

PCIe, 10G/25G Ethernet, SATA zawn re ai -lawan ai interface ni hta n bung ai masat masa ahkying ni hpe lang ra ai;

100 MHz (sh) 156.25 MHz shai hkat ai n-gun (ga shadawn, HCSL/LVDS pru ai) hpe lang ai;

FPGA kata na GTX/GTH/GTP zawn re ai -lawan ai nsen shapoi ai module (Tranceivers) ni gaw ndai shai hkat ai shingdu labau aten ni hpe ra sharawng ai.

✅ Kalang lang matut mahkai ai lam:

FPGA GTREFCLK0/1 (hpaji -lawan ai nsen shapoi ai ahkying pin ni)

Core Clock Ahkying Hpun a Npawt Nhpang

Multi-channel high-lawan ai system ni hta, n bung ai oscillator gaw ahkying garan ai chip hpe (ga shadawn, SI5341/AD9528) shachyut nna, dai gaw ahkying garan ai chip law law hpe shapraw ya ai;

Multi-ADC, DAC, hte FPGA matut mahkai lam ni hta ahkying masat masa galaw na matu htuk manu ai.

✅ Hkrang shapraw ai sumla:

→ Ahkying hpe hkang ai Chip (ga shadawn, PLL / Fanout Buffer)

↓

Law law lang bung ai aten ladaw ni → FPGA/ADC/DAC

FPGA kata na PLL/MMCM hpe mawdaw gau ai

Differential oscillator ni gaw -madang tsaw ai aten ladaw shang ai lam ni hpe jaw ya lu ai (ga shadawn, IBUFDS interface hku nna FPGA de shang ai), dai hpang kata na PLL/MMCM gaw system module langai hpra a matu aten ladaw ni hpe shapraw ya lu ai; ndai gaw ahkying aten hpe grau kaja hkra galaw ya nna, system ting na ahkying aten jitter hpe shayawm ya ai.

Masha law malawng lang ai shai hkat ai pru ai lam amyu myu hte FPGA hte htuk manu ai lam

✔ FPGA galaw ai company ni tsun ai hte maren, htuk manu ai differential output amyu hpe lang na matu hpaji jaw da ai.

Laksan Oscillator lata na matu hpaji jaw ai lam ni

Protocol-hpaji jaw da ai chyahkring hkring ni hpe ahkyak shatai nna galaw u:

PCIe: 100 MHz;

156.25 MHz;

25G/40G n-gun 312.5 MHz;

JESD204B/C: 250 MHz, 312.5 MHz, 625 MHz, etc.

FPGA a tara shang laika buk hta hpaji jaw da ai aten ladaw hpe yu u;

Low jitter gaw ahkyak ai:

RMS jitter < 0.5 ps (-lawan ai hku hkau lam ni a matu ra ai);

Grau nna PCIe, JESD204C, hte 10G/25G Ethernet ni a matu ahkyak ai.

✅ Hpaji -Lawan ai FPGA ni hta n bung ai Oscillator ni a shadawn shadang frequency ni

✔ Model langai ngai a matu, Hangjing dut mari ai ni (sh) hpaji ninghkring ni hpe matut mahkai nna, htuk manu ai shai hkat ai pru ai ladat hpe hpaji jaw na matu hpaji jaw da ai.

Gadun dawk

Differential oscillators gaw, dai ni na aten na lawan ai- FPGA system ni hta, madang langai zawn rai nna, lawan ai hku matut mahkai ai lam hte system a shingjawng ai lam hpe madi shadaw ya ai ahkyak ai arung arai ni rai nga ai.

Nang hta FPGA hkrang langai ngai (Xilinx Zynq Ultrascale+, Intel Stratix 10 zawn re ai), n bung ai oscillator hkrang langai ngai, shing nrai, matut mahkai lam hta ra kadawn ai lam (PCIe Gen3/SFP+ zawn re ai) nga yang, Suzhou Hangjing gaw nang hpe htap htuk dik ai aten ladaw masat masa galaw ai ladat hte hkrang shapraw ai lam hpe hpaji jaw ya lu na re.