Usb Otg Fs; Ethernet - ST STM3220F-EVAL User Manual

1.14 USB OTG FS

STM3220F-EVAL evaluation board support USB OTG full speed communication via a USB
Micro-AB connector (CN8) and USB power switch (U1) connected to VBUS. The evaluation
board can be powered by this USB connection at 5V DC with 500mA current limitation.
The LED LD6 will be light when power switch (U1) is ON and STM3220F-EVAL works as a
USB host or if VBUS is powered by another USB host when STM3220F-EVAL works as a
USB device. The LD5 will be light when over-current is occurred.

1.15 Ethernet

STM3220F-EVAL evaluation board support 10M/100M Ethernet communication by a PHY
DP83848CVV (U5) and integrated RJ45 connector (CN7). Both MII and RMII interface mode
are supported and can be selected by setting of jumpers JP5, JP6 and JP8 as listed below:
Table 14 Ethernet Related Jumpers and solder bridges
Jumper Description
JP8 is used to select MII or RMII interface mode. MII is enabled when JP8
is open while RMII interface mode is enabled when JP8 is close.
JP8
Default setting: Not Fitted
JP6 should be set as shown to the right when MII interface mode is
enabled(Default setting):
JP6
JP6 should be set as shown to the right when RMII interface mode is
enabled:
25MHz clock for MII or 50MHz clock for RMII is provided by MCO at PA8
when JP5 is set as shown to the right (Default setting):
25MHz clock is provided by external crystal X1 (for MII interface mode
JP5
only) when JP5 is set as shown to the right:
JP5 has to be kept open when clock is provided by external oscillator U3
(not fit by default)
JP23 Description of JP23 is in chapter 1.13 Analog Input.
SB1 is used to select clock source only for RMII mode, the clock from
MCO is connected to RMII_REF_CLK when SB1 is closed.
SB1
Default setting: open
SB2 is used to select clock source only for RMII mode, the clock from
pin25 of Ethernet PHY U5 is connected to RMII_REF_CLK when SB2 is
SB2 closed.
Default setting: close
A tes tpoint TP2 is available on the board for PTP_PPS feature test, it can be used only when
JP11 is kept on open. (Note: there are no problem of conflict between PTP_PPS output &
ULPI data bus, pls. refer to 6.1.9.3 interface protection of USB3300. TBC)
Qing SHAO Page 13
STM3220F-EVAL Board
1 2 3
1 2 3
1 2 3
1 2 3
03/06/2009