Page History

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Impact: Power supply option 1.25 V removed. Minor changes in electrical characteristics. (???)

#1 Changed DCDC 171050601 (U18) to MPM3683GMN-10 and adapted power circuit.

Type: Schematic Change

Reason: BOM Optimization.

Impact: (???)

#2 Changed DCDC 171050601 (U22, U26, U29) to MPM3650CGQW-Z and adapted power circuit.

Type: Schematic Change

Reason: BOM Optimization.

Impact: (???)

#2 Changed DCDC EN6347QI #2 Changed DCDC EN6347QI (U19) to MPM3650CGQW-Z and adapted power circuit.

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Impact: None. Increased current output capability. Minor changes in electrical characteristics. (???)

#2 Changed battery power supply circuit (U37, D16).

Type: Schematic Change

Reason: Change battery voltage supply from 1.8 V to 1.2 V to follow AMD recommendation.

Impact:  (???)

#2 Changed diode (D16) from SDMG0340LC-7-F to BAS70-05W.

Type: Schematic Change

Reason: (???)

Impact:  (???)

#3 Changed load switch TPS27082LDDCR (Q1, Q2, Q3) to MP5077GG-Z and adapted circuit.

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Reason: Follow PCIe recommendation.

Impact: None.

#3 Routed in schematic with "D100" marked signals with 100 Ohm differential impedance.

Type: PCB Change

Reason: Improve signal integrity.

Impact: None.

#3 Changed CAN bus signals net names (

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CAN_H → CAN_P

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,

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CAN_L → CAN_N) to route them with 120 Ohm differential impedance.

Type: PCB Change

Reason: Improve signal integrity.

Impact: None.

#3 Reordered MGT signal connection at FireFly connector (J6, J21).

Type: Schematic Change

Reason: Improve FireFly handling and harmonize with TEBF0818 series.

Impact: If FireFly is used custom firmware needs to be adapted by customer.

#3 Renamed following signals (IN2_P → IN2_CLK_P and IN2_N → IN2_CLK_N).

Type: Schematic Change

Reason: Harmonize with TEBF0818 series.

Impact: None.

#3 Inserted level shifter circuit (T7, T8) between CPLD (U39) (signal "PWROK") and ATX connector (J20) (signal "PWR_OK").

Type: Schematic Change

Reason: Change voltage level between CPLD voltage rail "3V3SB" and ATX connector voltage rail "5VSB".

Impact: None.

#3 Inserted MOSFET (T9) circuit for level shifting and logic level inverting.

Type: Schematic Change

Reason: Change voltage level between CPLD voltage rail "3V3SB" and ATX connector voltage rail "5VSB" and harmonize with TEBF0818 series.

Impact: None. CPLD firmware reflects it but customer firmware needs to be checked/adapted by customer.

#3 Connected all shield signals for connector (J7) together to net "FGND".

Type: Schematic Change

Reason: Harmonize with TEBF0818 series.

Impact: None.

#3 Renamed shield net to FGND2 for connector (J13) and changed shield components from 0 Ohm resistor (R43, R44) to 1 MOhm resistor (R143) and 100 pF capacitor (C149).

Type: Schematic Change

Reason: Harmonize with TEBF0818 series. (???)

Impact: None.

#3 Inserted FGND3 with resistor (R43) and capacitor (C93) for SFP+ connector (J14) shield.

Type: Schematic Change

Reason: Improve ESD protection.

Impact: None.

#3 Set capacitor (C16, C17) to not fitted.

Type: Schematic Change

Reason: Harmonize with TEBF0818 series

Bank 64 B64_L{1...24}_P/N signals, 

Bank 65 B65_L{1...13, 15...24}_P/N signals,

Bank 66 B48_L{1...24}_P/N signals, MGT Bank 128, MGT CLK0 Bank 228, MGT Bank 228, 

MGT CLK0 Bank 229, MGT Bank 229, 

MGT CLK0 Bank 230, MGT Bank 230, MGT CLK0/1 Bank 505, CLK0,7,8, Display Port (TX, AUX, TX_AUX,

) with 100 Ohm differential impedance.

Type: PCB Change

Reason: Follow PCIe recommendation.

Impact: None.

#1 Change eMMC (U2) from MTFC16GJVEC-2M WT to SDINBDG4-8G-XI2.

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Reason: Improve power quality.

Impact: None.

#22 Protected input power circuit with TVS diode SMBJ20CA (D11, D19).

Type: Schematic Change

Reason: Improve power supply input protection.

Impact: None.

#22 Changed capacitor (C39, C82, C207) from 4.7 µF, 6.3 V to 10 µF, 10 V.

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Reason: Follow SFP+ recommendation.

Impact: None.

#22 Added decoupling capacitor (C281, C282, C283, C284, C285, C286, C287).

Type: Schematic Change

Reason: Improve power supply.

Impact: None.

#22 Added pull-up resistor (R293) for signal "I2C_RST".

Type: Schematic Change

Reason: Use external pull-up resistor.

Impact: None.

#16 Added additional decoupling capacitor (C263). 

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Reason: Improve power supply.

Impact: None.

#24 Changed resistor (R27, R196) from 4.99 kOhm to 100 Ohm.

Type: Schematic Change

Reason: BOM optimization.

Impact: None.

#24 Set resistor (R98, R198) as not fitted.

Type: Schematic Change

Reason: Harmonize with TEBF0818 series.

Impact: None.

#24 Added debounce circuit (R235, R236, C211, C213) for button (S1, S2).

Type: Schematic Change

Reason: Improve button behaviour.

Impact: None.

#24 Added pull-up resistor (R228 ... R234) for signal ("PRSNT1", "PERST", "WAKE", "PRSNT2", "PRSNT3", "PRSNT4", "PRSNT5").

Type: Schematic Change

Reason: Harmonize with TEBF0818 series.

Impact: None.

#24 Changed net name from "3.3V_MOD" to "VCC_MOD".

Type: Schematic Change

Reason: Harmonize with TEBF0818 series.

Impact: None.

#24 Changed net name from "5VSBIN" to "5VSB".

Type: Schematic Change

Reason: Harmonize with TEBF0818 series.

Impact: None.

#33 Added legal notices, system and power overview. Updated revision history. Updated page count and order. 

Type: Documentation Update

Reason: Documentation improvement.

Impact: None.

#22 Updated PCB with rules, signal layout, layerstack, polygons.

Type: Schematic Change

Reason: Improve routing.

Impact: None.

28 Added UKCA logo.

Type: PCB Change

Reason: Required for export to UK.

Impact: None.

#33 Added I2C address table and Power Voltage Range table.

Type: Documentation Update

Reason: Documentation improvement.

Impact: None.

#33 Updated schematic sheet from template.

Type: Documentation Update

Reason: Documentation improvement.

Impact: None.

#33 Updated block diagram.

Type: Documentation Update

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