Texas Instruments OMAP5912 Reference Manual page 1565

OTG on Alternate Pin Group 2 Using 6-Wire OTG Transceiver
Figure 65. OTG on USB Alternate Pin Group 2 Using 6-Wire OTG Transceiver
U1
MCSI2.DOUT/USB0.TXEN
UART2.TX/USB0.TXD
UART2.RTS/USB0.SE0
UART2.CTS/USB0.RCV
MCSI2.DIN/USB0.VP
UART2.RX/USB0.VM
I2C.SCL
I2C.SDA
OMAP5912
SPRU761A
OTG_SYSCON_1.USB2_TRX_MODE must be set to 1 to allow proper
bidirectional operation
OTG_SYSCON_2.USBx_SYNCHRO must be set to allow proper bidirectional
signaling on pins UART2.TX/USB0.TXD and UART2.RTS/USB0.SE0.
OE
TXDAT
TXSE0
RCV
RCVVP
RCVVM
OTGIRQ
GPIOX
SCL
SDA
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
-
MCSI2.DIN/USB0.VP
-
UART2.RX/USB0.VM
of the
U2
OE
DAT
SE0 D+
RCV
D−
VP
VM
ID
VBUS
INT
VDD
SCL
SDA
USB OTG transceiver
R1, R2 Value depends on transceiver
C1
VBUS capacitance must meet OTG spec C DRD_VBUS
U1
OMAP5912
U2
USB OTG transceiver
U3
Transient suppressor, like SN65220, SN65240, or SN75240
J1 USB mini-AB receptacle
Universal Serial Bus (USB)
USB OTG Controller
4-wire USB transceiver.
R1
Transient
U3
suppressor
R2
C1
J1
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