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Atlys Reference Manual

Doc: 502-178 page 10 of 19

See Table

K15

F17

L16

F16

N17

Spartan-6

G13

C17

INT#

RESET#

COL

CRS

RXDV

RXCLK

RXER

GTXCLK

TXCLK

TXER

TXEN

MDIO

25MHz

Crystal

MDC

CONFIG

0001101

CLK

See Table

C18

L12

K16

G18

H15

RXD

TXD

Marvell M88E1111

x14

Halo HFJ11

Integrated magnetics

F18

Link/Status

LEDs (x6)

The Atlys Base System Builder (BSB) support package automatically generates a test application for

the Ethernet MAC; this can be used as a reference for creating custom designs. Another sample

Ethernet-based design (the web server) can be found on the Digilent website.

ISE designs can use the IP Core Generator wizard to create a tri-mode Ethernet MAC controller IP

core.

Video Input and Output (HDMI Ports)

The Atlys board contains four HDMI ports, including two buffered HDMI input/output ports, one

buffered HDMI output port, and one unbuffered port that can be input or output (generally used as

an output port.) The three buffered ports use HDMI type A connectors, and the unbuffered port uses a

type D connector loaded on the bottom side of the PCB immediately under the Pmod connector (the

type D connector is much smaller than the type A). The data signals on the unbuffered port are

shared with a Pmod connector. This limits signal bandwidth somewhat – the shared connector may

not be able to produce or receive the highest frequency video signals, particularly with longer HDMI

cables.

Since the HDMI and DVI systems use the same TMDS signaling standard, a simple adaptor (available

at most electronics stores) can be used to drive a DVI connector from either of the HDMI output ports.

The HDMI connector does not include VGA signals, so analog displays cannot be driven.

The 19-pin HDMI connectors include four differential data channels, five GND connections, a one-wire

Consumer Electronics Control (CEC) bus, a two-wire Display Data Channel (DDC) bus that is

essentially an I2C bus, a Hot Plug Detect (HPD) signal, a 5V signal capable of delivering up to 50mA,

RXD Signals

RXD0:

G16

RXD1:

H14

RXD2:

E16

RXD3:

F15

RXD4:

F14

RXD5:

E18

RXD6:

D16

RXD7:

D17

TXD Signals

TXD0:

H16

TXD1:

H13

TXD2:

K14

TXD3:

K13

TXD4:

J13

TXD5:

G14

TXD6:

H12

TXD7:

K12