Texas Instruments OMAP5912 Reference Manual page 1569

Pin Group 1 USB Host Using 4-Wire USB Transceiver
Figure 68. USB Host Connections on USB Pin Group 1 Using 4-Wire Transceiver
U1
MCBSP3.CLK/USB1.TXEN
MCSI1.DOUT/USB1.TXD
RTC_WAKE_INT/USB1.SE0
MCSI1.DIN/USB1.RCV
CLK32K_OUT/USB1.SPEED
MPU_BOOT/USB1.SUSP
GPIO
OMAP5912
SPRU761A
OTG_SYSCON_2.USBx_SYNCHRO must be set to allow proper bidirectional
signaling on
RTC_WAKE_INT/USB1.SE0.
OE
TXVP/RCVVP
TXVM/RCVVM
RCV
SPEED
SUSPEND
VBUS_ENABLE
OVERCURRENT
R1, R2
R3, R4
C1
U1
U2
U3
U4
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:
-
MCBSP3.CLKX/USB1.TXEN
-
MCSI1.DOUT/USB1.TXD
-
RTC_WAKE_INT/USB1.SE0
-
MCSI1.DIN/USB1.RCV
-
CLK32K_OUT/USB1.SPEED
-
MPU_BOOT/USB1.SUSP
See Table 74.
pins MCSI1.DOUT/USB1.TXD
U2
OE
VP
D+
VM
RCV
D−
SPEED
SUSPEND
VDD
USB transceiver
CONTROL
Value depends on transceiver
15K Ohm 5%
Low ESR cap, minimum 120 uF
OMAP5912
USB transceiver
Transient suppressor, like SN65220, SN65240, or SN75240
Power switch, like TPS2014 or TPS2015
USB type-A receptacle
Universal Serial Bus (USB)
USB OTG Controller
R1
Transient
U3
suppressor
R2
R4
R3
VBUS
U4
VBUS
C1
and
J1
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