Texas Instruments OMAP5912 Reference Manual page 1598

USB OTG Controller
Figure 85. OMAP5912 as USB Host on Transceiverless Link Using TXD/TXSE0
Signaling
U1
MCSI2.DOUT/USB2.TXEN
UART2.TX/USB2.TXD
UART2.RTS/USB2.SE0
UART2.CTS/USB2.RCV
MCSI2.DIN/USB2.VP
UART2.RX/USB2.VM
OMAP5912 acts as the USB host
on the transceiverless link
OMAP5912
306 Universal Serial Bus (USB)
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/USB2.TXEN
-
UART2.TX/USB2.TXD
-
UART2.RTS/USB2.SE0
-
UART2.CTS/USB2.RCV
-
MCSI2.DIN/USB2.VP
-
UART2.RX/USB2.VM
See Table 74.
HMC_MODE must be set to a value that routes a host controller port through
the TLL (in TXD/TXSE0 mode) to USB pin group 2 (see Table 73).
OTG_SYSCON_1.USB2_TRX_MODE must be set to 3 to allow proper
operation of the transceiverless link logic connection.
RCV
RCVVM
RCVVP
TXOE
TXSE0
TXD
U2
RCV
RCVVM
RCVVP
TXOE
TXSE0
TXD
This device acts as the USB
device on the transceiverless
link
USB device
SPRU761A