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On-board Gigabit Ethernet PHY (U8) is provided with Marvell Alaska 88E1512 IC (U8). The Ethernet PHY RGMII interface is connected to the ZynqMP Ethernet3 PS GEM3. I/O voltage is fixed at 1.8V for HSTL signaling. The reference clock input of the PHY is supplied from an on-board 25.000000 MHz oscillator (U21U11).
High-speed USB ULPI PHY
Hi-speed USB ULPI PHY (U32U18) is provided with USB3320 from Microchip. The ULPI interface is connected to the Zynq PS USB0 via MIO52..63, bank 502. The I/O voltage is fixed at 1.8V and PHY reference clock input is supplied from the on-board 52.000000 MHz oscillator (U33U14).
MAC Address EEPROM
A Microchip 24AA025E48 serial EEPROM (U25) contains a globally unique 48-bit node address, which is compatible with EUI-48(TM) specification. The device is organized as two blocks of 128 x 8-bit memory. One of the blocks stores the 48-bit node address and is write protected, the other block is available for application use. It is accessible over I2C bus with slave device address 0x50.
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Clock Source | Schematic Name | Frequency | Clock Destination |
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SiTime SiT8008BI oscillator, U21U32 | PS_CLK | 33.333333 MHz | Zynq MPSoC U1,pin R16 |
SiTime SiT8008BI oscillator, U21U11 | - | 25.000000 MHz | Quad PLL clock generator U10, pin 3, and Ethernet PHY U8, pin 34 |
SiT8008AI-73-XXS oscillator, U14 | - | 52.000000 MHz | USB PHY U18, Pin 26 |
Table 13: Reference clock signals
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Date | Revision | Contributors | Description | ||||||||||||||||||||||||
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2020-02-03 | v.85 | Martin Rohrmüller |
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2019-11-28 | v.81 | Martin Rohrmüller |
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2019-10-30 | v.80 | John Hartfiel |
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2019-09-17 | v79 | Martin Rohrmüller |
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2019-07-17 | v.78 | Martin Rohrmüller |
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2019-05-08 | v.77 | John Hartfiel |
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2018-11-12 | v.74 | John Hartfiel |
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2018-08-30 | v.73 | John Hartfiel |
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2018-07-12 | v.69 | Ali Naseri |
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2018-06-11 | v.61 | John Hartfiel |
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2018-03-12 | v.54 |
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2017-11-20 | v.51 | John Hartfiel |
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2017-11-10 | v.50 | John Hartfiel |
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2017-10-18 | v.49 | John Hartfiel |
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2017-09-25 | v.48 | John Hartfiel |
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2017-09-18 | v.47 | John Hartfiel |
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2017-08-30 | v.46 | Jan Kumann |
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2017-08-24 | v.36 | John Hartfiel |
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2017-08-21 | v.34 | John Hartfiel |
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2017-08-21 | v.33 | Jan Kumann |
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| v.7 | John Hartfiel |
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2017-08-07 | v.5 | Jan Kumann |
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