Arria® V Device Datasheet

ID 683022
Date 5/23/2023
Public
Document Table of Contents

2.2.1.1. Reference Clock

Table 100.  Reference Clock Specifications for Arria V GZ DevicesSpeed grades shown refer to the PMA Speed Grade in the device ordering code. The maximum data rate could be restricted by the Core/PCS speed grade. Contact your Intel Sales Representative for the maximum data rate specifications in each speed grade combination offered. For more information about device ordering codes, refer to the Arria V Device Overview.
Symbol/Description Conditions Transceiver Speed Grade 2 Transceiver Speed Grade 3 Unit
Min Typ Max Min Typ Max
Reference Clock
Supported I/O Standards Dedicated reference clock pin 1.2-V PCML, 1.4-V PCML, 1.5-V PCML, 2.5-V PCML, Differential LVPECL, LVDS, and HCSL
RX reference clock pin 1.4-V PCML, 1.5-V PCML, 2.5-V PCML, LVPECL, and LVDS
Input Reference Clock Frequency
 (CMU PLL) 140 40 710 40 710 MHz
Input Reference Clock Frequency
(ATX PLL)140 100 710 100 710 MHz
Rise time Measure at ±60 mV of differential signal 141 400 400 ps
Fall time Measure at ±60 mV of differential signal 141 400 400
Duty cycle 45 55 45 55 %
Spread-spectrum modulating clock frequency PCI Express* ( PCIe* ) 30 33 30 33 kHz
Spread-spectrum downspread PCIe* 0 to

–0.5

0 to

–0.5

%
On-chip termination resistors 100 100 Ω
Absolute VMAX Dedicated reference clock pin 1.6 1.6 V
RX reference clock pin 1.2 1.2
Absolute VMIN –0.4 –0.4 V
Peak-to-peak differential input voltage 200 1600 200 1600 mV
VICM (AC coupled) Dedicated reference clock pin 1000/900/850 142 1000/900/850 142 mV
RX reference clock pin 1.0/0.9/0.85 143 1.0/0.9/0.85143 mV
VICM (DC coupled) HCSL I/O standard for PCIe* reference clock 250 550 250 550 mV
Transmitter REFCLK Phase Noise (622 MHz) 144 100 Hz -70 -70 dBc/Hz
1 kHz -90 -90 dBc/Hz
10 kHz -100 -100 dBc/Hz
100 kHz -110 -110 dBc/Hz
≥1 MHz -120 -120 dBc/Hz
Transmitter REFCLK Phase Jitter (100 MHz) 145 10 kHz to 1.5 MHz
( PCIe* ) 3 3 ps (rms)
RREF 1800 ±1% 1800 ±1% Ω
140 The input reference clock frequency options depend on the data rate and the device speed grade.
141 REFCLK performance requires to meet transmitter REFCLK phase noise specification.
142 The reference clock common mode voltage is equal to the VCCR_GXB power supply level.
143 This supply follows VCCR_GXB
144 To calculate the REFCLK phase noise requirement at frequencies other than 622 MHz, use the following formula: REFCLK phase noise at f(MHz) = REFCLK phase noise at 622 MHz + 20*log(f/622).
145 To calculate the REFCLK rms phase jitter requirement for PCIe* at reference clock frequencies other than 100 MHz, use the following formula: 
REFCLK rms phase jitter at f(MHz) = REFCLK rms phase jitter at 100 MHz × 100/f.