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KC705 Evaluation Board
39
UG810 (v1.3) May 10, 2013
Feature Descriptions
Details about the tri-mode Ethernet MAC core are provided in
LogiCORE IP
Tri-Mode Ethernet MAC User Guide.
For more information about the Marvell 88E1111 see
.
For more information about the ICS 844021-01 see
.
USB-to-UART Bridge
[
, callout
The KC705 board contains a Silicon Labs CP2103GM USB-to-UART bridge device (U12)
which allows a connection to a host computer with a USB port. The USB cable is supplied
in the Evaluation Kit (standard-A plug to host computer, mini-B plug to KC705 board
connector J6). The CP2103GM is powered by the USB 5V provided by the host PC when the
USB cable is plugged into the USB port on the KC705 board.
Xilinx UART IP is expected to be implemented in the FPGA fabric. The FPGA supports the
USB-to-UART bridge using four signal pins: Transmit (TX), Receive (RX), Request to Send
(RTS), and Clear to Send (CTS).
Silicon Labs provides royalty-free Virtual COM Port (VCP) drivers for the host computer.
These drivers permit the CP2103GM USB-to-UART bridge to appear as a COM port to
communications application software (for example, TeraTerm or HyperTerm) that runs on
the host computer. The VCP device drivers must be installed on the host PC prior to
establishing communications with the KC705 board.
shows the USB signal definitions at J6.
N29
PHY_TXER
F2
TXER
M27
PHY_TXCTL_T
XEN
E1
TXEN
N27
PHY_TXD0
F1
TXD0
N25
PHY_TXD1
G2
TXD1
M29
PHY_TXD2
G3
TXD2
L28
PHY_TXD3
H2
TXD3
J26
PHY_TXD4
H1
TXD4
K26
PHY_TXD5
H3
TXD5
L30
PHY_TXD6
J1
TXD6
J28
PHY_TXD7
J2
TXD7
J4
SGMII_TX_P
A3
SIN_P
J3
SGMII_TX_N
A4
SIN_N
H6
SGMII_RX_P
A7
SOUT_P
H5
SGMII_RX_N
A8
SOUT_N
Table 1-18:
Ethernet PHY Connections
(Cont’d)
FPGA Pin
(U1)
Schematic
Net Name
M88E1111
(U37)
Pin Number
Pin Name