EVB8720 SMSC, EVB8720 Datasheet - Page 10

• Manufacturer Part Number: EVB8720
• Description: Ethernet Modules & Development Tools LAN8720 Design BRD
• Manufacturer: SMSC

Specifications of EVB8720

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Revision 1.1 (05-24-10)
2.2.8
PIN
10
1
2
3
4
5
6
7
8
9
SWITCH
S1
+5V
MDIO
MDC
No Connect
No Connect
RXD1
RXD0
RXDV
RXCLK
RXER
DESCRIPTION
Note 2.8
Note 2.9
Switches
(Note
Reset switch
2.8)
The functionality of pin 9 depends on the configured mode of operation. Pin 9 will be driven
by REFCLKO in the REFCLKO modes of operation. In the nINT on-board 50MHz oscillator
mode, pin 9 will be driven by the EVB8720’s on-board 50MHz oscillator. In the nINT off-
board 50MHz clock mode, pin 9 is either unconnected (50MHz clock provided by the
partner device via the TXCLK pin) or used to provide the 50MHz clock to the CLKIN pin
of the LAN8720A. Refer to
(nINTSEL)," on page 6
When configured for nINT off-board 50MHz clock mode via TXCLK, pin 12 is connected
to the XTAL1/CLKIN pin of the LAN8720A. Pin 12 is unconnected in all other modes of
operation. Refer to
(nINTSEL)," on page 6
Table 2.8 P1 - 40-Pin Female MII Connector Pinout
PIN
11
12
13
14
15
16
17
18
19
20
DESCRIPTION
No Connect
TXCLK
TXEN
TXD0
TXD1
No Connect
No Connect
No Connect
CRS
+5V
DESCRIPTION
USER MANUAL
Section 2.2.3, "Clocking and nINT/REFCLKO Pin Configuration
Table 2.9 Switches
(Note
and the LAN8720A schematic for additional information.
and the LAN8720A schematic for additional information.
2.9)
Section 2.2.3, "Clocking and nINT/REFCLKO Pin Configuration
10
PIN
21
22
23
24
25
26
27
28
29
30
+5V
GND
GND
GND
GND
GND
GND
GND
GND
GND
DESCRIPTION
When pressed, triggers a board reset.
EVB8720 Evaluation Board User Manual
FUNCTION
PIN
31
32
33
34
35
36
37
38
39
40
GND
GND
GND
GND
GND
GND
GND
GND
GND
+5V
DESCRIPTION
SMSC EVB8720