![Xilinx SP305 Spartan-3 Скачать руководство пользователя страница 22](http://html1.mh-extra.com/html/xilinx/sp305-spartan-3/sp305-spartan-3_user-manual_887219022.webp)
Label
DESCRIPTION
FPGA Pin
ROT_ENC_A
Channel A
F9
ROT_ENC_B
Channel B
E9
ROT_ENC_S1
Pole 1 of NO switch
C9
ROT_ENC_S2
pole 2 of NO switch
B9
16
SP305 Spartan-3 Development Platform User Guide
www.xilinx.com
UG216 (v1.1) March 3, 2006
SP305 Spartan-3 Development Platform User Guide
R
USB Controller with Host and Peripheral Ports (25)
A Cypress CY7C67300 embedded USB host controller provides the USB connectivity for
the board. The USB controller supports host and peripheral modes of operation. The USB
controller has two serial interface engines (SIE) that can be used independently. SIE1 is
connected to the USB Host 1 connector (J19) and the USB Peripheral 1 connector (J2). SIE2
is connected only to the USB Peripheral 2 connector.
Note:
When using SIE1, the port can only be configured at boot-up to use either the host or
peripheral connector, but not both at the same time.
The USB controller has an internal microprocessor to assist in processing USB commands.
The firmware for this processor can be stored in its own dedicated IIC EEPROM (U17) or
can be downloaded from a host computer via a peripheral connector. The serial port of the
USB controller is connected to J32 and J33 through an RS-232 transceiver to assist with
debug.
Note:
This USB feature on this board has not been tested; therefore, it is not supported.
Table 2-14:
ROT ENC Pin Connections
Table 2-15:
USB Table
Label
DESCRIPTION
FPGA Pin
USB_D0
U3
USB Data Bus
USB_D1
U2
USB Data Bus
USB_D2
U1
USB Data Bus
USB_D3
T8
USB Data Bus
USB_D4
T7
USB Data Bus
USB_D5
T6
USB Data Bus
USB_D6
T5
USB Data Bus
USB_D7
T2
USB Data Bus
USB_D8
T1
USB Data Bus
USB_D9
R8
USB Data Bus
USB_D10
R7
USB Data Bus
USB_D11
R6
USB Data Bus
USB_D12
R5
USB Data Bus