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Table 62. Pin Group 0 Transceiver Type Selection
USB0_TRX_MODE
0x0
0x1
0x2
0x3
Other values
Table 63. Alternate Pin Group 2 Transceiver Type Selection
USB0_TRX_MODE
0x0
0x1
0x2
0x3
Other values
SPRU761A
OMAP5912 places pins USB1.TXD and USB1_TXSE0 in high-impedance
mode to prevent contention with any signals driven by the external transceiver.
Mode 0 can be used for normal 6-pin DAT/SE0 mode functionality when
USB_TRANSCEIVER_CTRL.CONF_USB1_UNI_R = 1.
OMAP5912 Pin Group 0 Transceiver Signaling
6-pin DAT/SE0 mode unidirectional signaling.
4-pin VP/VM mode bidirectional signaling
3-pin DAT/SE0 mode bidirectional signaling
6-pin DAT/SE0 mode unidirectional signaling
Reserved
This register is cleared to 0x0 by soft reset or hardware reset.
When using the OMAP5912 integrated USB transceiver, USB0_TRX_MODE
is set to 3. Software can avoid USB0_TRX_MODE = 0 to improve software
compatibility with future devices.
When OMAP5912 top-level signal multiplexing selects alternate pin group 2,
the USB0_TRX_MODE signal affects the transceiver type for the transceiver
connected to the following OMAP5912 pins:
-
MCSI2.DOUT/USB0.TXEN
-
UART2.TX/USB0.TXD
-
UART1.RTS/USB0.SE0
-
UART2.CTS/USB0.RCV
-
MCSI2.DIN/USB0.VP
-
UART2.RX/USB0.VM
OMAP5912 Alternate Pin Group 2 Transceiver Signaling
6-pin DAT/SE0 mode unidirectional signaling.
4-pin VP/VM mode bidirectional signaling
3-pin DAT/SE0 mode bidirectional signaling
6-pin DAT/SE0 mode unidirectional signaling
Reserved
USB OTG Controller
Universal Serial Bus (USB)
201
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