Digilent Atlys 참조 매뉴얼 - 페이지 9
{카테고리_이름} Digilent Atlys에 대한 참조 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. Digilent Atlys 19 페이지. Circuit board
페이지 인쇄Atlys Reference Manual
Flash Memory
The Atlys board uses a128Mbit Numonyx N25Q12 Serial
Flash memory device (organized as 16-bit by 16Mbytes) for
non-volatile storage of FPGA configuration files. The SPI
Flash can be programmed with a .bit, .bin., or .mcs file
using the Adept software. An FPGA configuration file
requires less than 12Mbits, leaving 116Mbits available for
user data. Data can be transferred from a PC to/from the
Flash by user applications, or by facilities built into the
Adept software. User designs programmed into the FPGA
can also transfer data to and from the ROM. A reference
design on the Digilent website provides an example of
driving the Flash memory from an FPGA-based design.
A board test/demonstration program is loaded into the SPI Flash during manufacturing. That
configuration, also available on the Digilent webpage, can be used to demonstrate and check all of
the devices and circuits on the Atlys board.
Ethernet PHY
The Atlys board includes a Marvell Alaska Tri-mode PHY (the 88E1111) paired with a Halo HFJ11-
1G01E RJ-45 connector. Both MII and GMII interface modes are supported at 10/100/1000 Mb/s.
Default settings used at power-on or reset are:
MII/GMII mode to copper interface
•
Auto Negotiation Enabled, advertising all speeds, preferring Slave
•
MDIO interface selected, PHY MDIO address = 00111
•
No asymmetric pause, no MAC pause, automatic crossover enabled
•
Energy detect on cable disabled (Sleep Mode disabled), interrupt polarity LOW
•
The data sheet for the Marvell PHY is available from Marvell only with a valid NDA. Please contact
Marvell for more PHY-specific information.
EDK-based designs can access the PHY using either the xps_ethernetlite IP core for 10/100 Mbps
designs, or the xps_ll_temac IP core for 10/100/1000 Mbps designs. The xps_ll_temac IP core uses
the hard Ethernet MAC hardware core included in the Virtex-5 FPGA.
Doc: 502-178
AE14
CS#
AF14
SDI/DQ0
AF20
SDO/DQ1
AG21
WP#/DQ2
AG17
HLD#/DQ3
AH18
SCK
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