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SP305 Spartan-3 Development Platform User Guide
17
UG216 (v1.1) March 3, 2006
www.xilinx.com
Detailed Description
R
10/100 SMSC Ethernet MAC/PHY (26)
The SP-305 Development Platform contains a SMSC 91C111 Dual-Speed Fast Ethernet PHY
Transceiver at 10/100 Mbps. A 25-MHz crystal supplies the clock signal to the PHY. (See
Table 2-16
). These settings may be overwritten via software.
Note:
The EPROM and External Phy MII interface is not used or connected.
USB_D13
T4
USB Data Bus
USB_D14
R3
USB Data Bus
USB_D15
R2
USB Data Bus
USB_A0
R1
USB Address or Chip Select
USB_A1
P8
USB Address or Chip Select
USB_CS_N
Y13
USB Chip Select
USB_WR_N
P7
USB Write
USB_RD_N
P6
USB Read
USB_RESET
G7
USB Reset
USB_INT
AE11
USB Int, IORDY, IRQ0
Table 2-15:
USB Table
(Continued)
Label
DESCRIPTION
FPGA Pin
Table 2-16:
10/100 SMSC Ethernet MAC Clock Signals to PHY
Label
FPGA Pin
Description
ENET_SD0
U4
Ethernet Data 0
ENET_SD1
U5
Ethernet Data 1
ENET_SD2
U6
Ethernet Data 2
ENET_SD3
V2
Ethernet Data 3
ENET_SD4
V3
Ethernet Data 4
ENET_SD5
V4
Ethernet Data 5
ENET_SD6
V5
Ethernet Data 6
ENET_SD7
U7
Ethernet Data 7
ENET_SD8
V7
Ethernet Data 8
ENET_SD9
W1
Ethernet Data 9
ENET_SD10
W2
Ethernet Data 10
ENET_SD11
W3
Ethernet Data 11
ENET_SD12
W4
Ethernet Data 12
ENET_SD13
W5
Ethernet Data 13