Texas Instruments OMAP5912 Reference Manual page 1564

USB OTG Controller
OTG on Alternate Pin Group 2 Using 4-Wire OTG Transceiver
Figure 64. OTG on USB Alternate Pin Group 2 Using 4-Wire OTG Transceiver
U1
MCSI2.DOUT/USB0.TXEN
UART2.TX/USB0.TXD
UART2.RTS/USB0.SE0
UART2.CTS/USB0.RCV
GPIOX
I2C.SCL
I2C.SDA
OMAP5912
272 Universal Serial Bus (USB)
OE
OE
TXVP/RCVVP
VP
TXVM/RCVVM
VM
RCV
RCV
OTGIRQ
INT
SCL
SCL
SDA
SDA
USB OTG transceiver
R1, R2
C1
U1
U2
U3
J1
Proper initialization of the OMAP5912 device to support this mode of operation
requires proper setting of the top-level pin multiplexing for these pins:
-
MCSI2.DOUT/USB0.TXEN
-
UART2.TX/USB0.TXD
-
UART2.RTS/USB0.SE0
-
UART2.CTS/USB0.RCV
See Table 74.
HMC_MODE must be set to a value that provides OTG functionality on USB
alternate pin group 2 (see Table 73).
U2
R1
D+
D−
R2
ID
VBUS
VDD
Value depends on transceiver
VBUS capacitance must meet OTG spec C DRD_VBUS
OMAP5912
USB OTG transceiver
Transient suppressor, like SN65220, SN65240, or SN75240
USB mini-AB receptacle
J1
Transient
U3
suppressor
C1
SPRU761A