Intel® Cyclone® 10 GX Device Datasheet

ID 683828
Date 2/14/2022
Public
Document Table of Contents

Transceiver Specifications for Intel® Cyclone® 10 GX Devices

Table 22.  Reference Clock Specifications
Symbol/Description Condition Min Typ Max Unit
Supported I/O Standards Dedicated reference clock pin CML, Differential LVPECL, LVDS, and HCSL 31
RX pin as a reference clock CML, Differential LVPECL, and LVDS

Input Reference Clock Frequency

(CMU PLL)

  61 800 MHz

Input Reference Clock Frequency

(ATX PLL)

  100 800 MHz

Input Reference Clock Frequency

(fPLL PLL)

  25 32 / 50 800 MHz
Rise time 20% to 80% 400 ps
Fall time 80% to 20% 400 ps
Duty cycle 45 55 %
Spread-spectrum modulating clock frequency PCIe 30 33 kHz
Spread-spectrum downspread PCIe 0 to –0.5 %
On-chip termination resistors 100 Ω
Absolute VMAX Dedicated reference clock pin 1.6 V
RX pin as a reference clock 1.2 V
Absolute VMIN –0.4 V
Peak-to-peak differential input voltage 200 1600 mV
VICM (AC coupled) VCCR_GXB = 0.95 V 0.95 V
VCCR_GXB = 1.03 V 1.03 V
VICM (DC coupled) HCSL I/O standard for PCIe reference clock 250 550 mV
Transmitter REFCLK Phase Noise (622 MHz) 33 100 Hz –70 dBc/Hz
1 kHz –90 dBc/Hz
10 kHz –100 dBc/Hz
100 kHz –110 dBc/Hz
≥ 1 MHz –120 dBc/Hz
Transmitter REFCLK Phase Jitter (100 MHz) 1.5 MHz to 100 MHz (PCIe) 4.2 ps (rms)
RREF 2.0 k ±1% Ω

Maximum rate of change of the reference clock frequency

TSSC-MAX-PERIOD-SLEW 34

Max SSC df/dt     0.75 ps/UI
Table 23.  Transceiver Clocks Specifications
Symbol/Description Condition Min Typ Max Unit
CLKUSR pin for transceiver calibration Transceiver Calibration 100 125 MHz
reconfig_clk Reconfiguration interface 100 125 MHz
Table 24.  Transceiver Clock Network Maximum Data Rate Specifications
Clock Network Maximum Performance Channel Span Unit
ATX fPLL CMU
x1 12.5 12.5 10.3125 6 channels in a single bank Gbps
x6 12.5 12.5 N/A 6 channels in a single bank Gbps
PLL feedback compensation mode 12.5 12.5 N/A Side-wide Gbps
xN at 1.03 V VCCR_GXB/VCCT_GXB 12.5 12.5 N/A Side-wide Gbps
xN at 0.95 V VCCR_GXB/VCCT_GXB 10.5 10.5 N/A Side-wide Gbps
Table 25.  Receiver Specifications
Symbol/Description Condition Min Typ Max Unit
Supported I/O Standards High Speed Differential I/O, CML , Differential LVPECL , and LVDS 35
Absolute VMAX for a receiver pin 36 1.2 V
Absolute VMIN for a receiver pin 37 -0.4 V
Maximum peak-to-peak differential input voltage VID (diff p-p) before device configuration 1.6 V
Maximum peak-to-peak differential input voltage VID (diff p-p) after device configuration VCCR_GXB = 0.95 V 2.4 V
VCCR_GXB = 1.03 V 2.0 V
Minimum differential eye opening at receiver serial input pins 38 50 mV
Differential on-chip termination resistors 85-Ω setting 85 ± 30% Ω
100-Ω setting 100 ± 30% Ω
VICM (AC and DC coupled) 39 VCCR_GXB = 0.95 V 600 mV
VCCR_GXB = 1.03 V 700 mV
tLTR 40 10 µs
tLTD 41 4 µs
tLTD_manual 42 4 µs
tLTR_LTD_manual 43 15 µs
Run Length 200 UI
CDR PPM tolerance PCIe-only -300 300 PPM
All other protocols -1000 1000 PPM
Programmable DC Gain Setting = 0-4 0 10 dB
Programmable AC Gain at High Gain mode and Data Rate ≤ 6 Gbps

Setting = 0-28

VCCR_GXB = 0.95 V

0 19 dB

Setting = 0-28

VCCR_GXB = 1.03 V

0 21 dB
Table 26.  Transmitter Specifications
Symbol/Description Condition Min Typ Max Unit
Supported I/O Standards High Speed Differential I/O 44
Differential on-chip termination resistors 85-Ω setting 85 ± 20% Ω
100-Ω setting 100 ± 20% Ω
VOCM (AC coupled) VCCT_GXB = 0.95 V 450 mV
VCCT_GXB = 1.03 V 500 mV
VOCM (DC coupled) VCCT_GXB = 0.95 V 450 mV
VCCT_GXB = 1.03 V 500 mV
Rise time 45 20% to 80% 20 130 ps
Fall time 45 80% to 20% 20 130 ps
Intra-differential pair skew TX VCM = 0.5 V and slew rate setting of SLEW_R5 46 15 ps
Table 27.  Typical Transmitter VOD Settings
Symbol VOD Setting VOD-to-VCCT_GXB Ratio
VOD differential value = VOD-to-VCCT_GXB ratio x VCCT_GXB 31 1.00
30 0.97
29 0.93
28 0.90
27 0.87
26 0.83
25 0.80
24 0.77
23 0.73
22 0.70
21 0.67
20 0.63
19 0.60
18 0.57
17 0.53
16 0.50
15 0.47
14 0.43
13 0.40
12 0.37
Table 28.  Transmitter Channel-to-channel Skew Specifications
Mode Channel Span Maximum Skew Unit
x6 Clock Up to 6 channels in one bank 61 ps
xN Clock Within 2 banks 230 ps
PLL Feedback Compensation 47, 48 Side-wide 1600 ps
31 HCSL is only supported for PCIe.
32 25 MHz is for HDMI applications only.
33 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).
34 Defined for worst case spread spectrum clock (SSC) modulation profile, such as Lexmark.
35 CML, Differential LVPECL, and LVDS are only used on AC coupled links.
36 The device cannot tolerate prolonged operation at this absolute maximum.
37 The device cannot tolerate prolonged operation at this absolute minimum.
38 The differential eye opening specification at the receiver input pins assumes that Receiver Equalization is disabled. If you enable Receiver Equalization, the receiver circuitry can tolerate a lower minimum eye opening, depending on the equalization level.
39 Intel® Cyclone® 10 GX devices support DC coupling to other Intel® Cyclone® 10 GX devices and other devices with a transmitter that has matching common mode voltage.
40 tLTR is the time required for the receive CDR to lock to the input reference clock frequency after coming out of reset.
41 tLTD is time required for the receiver CDR to start recovering valid data after the rx_is_lockedtodata signal goes high.
42 tLTD_manual is the time required for the receiver CDR to start recovering valid data after the rx_is_lockedtodata signal goes high when the CDR is functioning in the manual mode.
43 tLTR_LTD_manual is the time the receiver CDR must be kept in lock to reference (LTR) mode after the rx_is_lockedtoref signal goes high when the CDR is functioning in the manual mode.
44 High Speed Differential I/O is the dedicated I/O standard for the transmitter in Intel® Cyclone® 10 GX transceivers.
45 The Intel® Quartus® Prime software automatically selects the appropriate slew rate depending on the design configurations.
46 SLEW_R1 is the slowest and SLEW_R5 is the fastest. SLEW_R6 and SLEW_R7 are not used.
47 refclk is set to 125 MHz during the test.
48 You can reduce the lane-to-lane skew by increasing the reference clock frequency.

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