Usb Interfaces; 2.15.1 Usbotg Interface; Figure 14 - Panda Audio Interface Block Diagram - pandaboard OMAP 4 Series System Reference Manual

(J16A)
(J16B)
2.15
The PandaBoard utilizes two USB interfaces. The first is a DP/DM interface from the internal transceiver
within OMAP to the mini-AB connector J18. The second interface utilizes the 12-wire ULPI interface
(USBB1) to an onboard USB phy, whose DP/DM I/Os are interfaced to a Hub IC which provides four
downstream USB Host ports, and an Ethernet interface. Each of these interfaces will be discussed in
more detail in the following paragraphs.

2.15.1 USBOTG Interface

The PandaBoard uses the USB OTG transceiver within the OMAP4430 that is connected to an industry-
standard mini-AB connector (J18) as shown in Figure 15. The VBUS from the connector is connected to
the TWL6030 companion Power IC, which can provide up to 100mA in host mode. The PandaBoard
may only be used in host mode if a +5Vdc power supply is installed in power jack P2.
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TM
OMAP
Reference Manual
HFL_P I
I
HFL_N
HFR_P I
(J6)
HFR_N I
Passives/ESD
Passives/ESD
I FM_AUD_LIN
I FM_AUD_RIN
O
FM_AUD_LOUT
O FM_AUD_ROUT
Figure 14 – Panda Audio Interface Block Diagram

USB Interfaces

4 PandaBoard System
I
AFML
AFMR I
O
AUXLP
AUXRP O
O
HFL_P
O HFL_N
O HFR_P
PDMFRAME IO
O HFR_N
PDMDL I
PDMUL O
O
PDMCLK
I HMIC_P
PDMCLKLB I
I HMIC_N
O HBIAS
SDA IO
SCL I
O HSR
O
HSL
I
AUD_CLK
AUD_OUT O
I
AUD_IN
AUD_FSYNC IO
FM_I2S_CLK I
FM_I2S_DO O
FM_I2S_DI I
IO
FM_I2S_FSYNC
Revision 0.4
September 22, 2010
DOC-21010
IO
ABE_PDM_FRAME/McBSP3_CLKX
O ABE_PDM_DL_DATA/McBSP3_DX
I ABE_PDM_UL_DATA/McBSP3_DR
I
ABE_CLKS/GPIO_118
O ABE_PDM_LB_CLK/McBSP3_FSX
IO I2C1_SDA
O I2C1_SCL
O ABE_McBSP1_CLKX/GPIO_114
I ABE_McBSP1_DR/GPIO_115
O ABE_McBSP1_DX/GPIO_116
IO ABE_McBSP1_FSX/GPIO_117
O ABE_McBSP2_CLKX/GPIO_110
I ABE_McBSP2_DR/GPIO_111
O
ABE_McBSP2_DX/GPIO_112
IO ABE_McBSP2_FSX/GPIO_113
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