OMAP
TM
4 PandaBoard System
Reference Manual
Revision 0.4
September 22, 2010
DOC-21010
Page 39 of 83
ABE_PDM_UL_DATA/McBSP3_DR
PDMFRAME
IO
PDMDL
I
PDMUL
O
PDMCLK
O
PDMCLKLB
I
ABE_PDM_DL_DATA/McBSP3_DX
O
I
ABE_CLKS/GPIO_118
I
ABE_PDM_FRAME/McBSP3_CLKX
IO
ABE_PDM_LB_CLK/McBSP3_FSX
O
SDA
IO
SCL
I
I2C1_SCL
O
I2C1_SDA
IO
HBIAS
HMIC_N
I
O
HMIC_P
I
(J16A)
HSR
O
HSL
O
(J16B)
Passives/ESD
Passives/ESD
ABE_McBSP1_DX/GPIO_116
ABE_McBSP1_DR/GPIO_115
I
O
ABE_McBSP1_FSX/GPIO_117
IO
ABE_McBSP1_CLKX/GPIO_114
O
AUD_CLK
I
AUD_OUT
O
AUD_IN
I
AUD_FSYNC
IO
HFL_N
O
HFL_P
O
HFR_N
O
HFR_P
O
HFL_P
I
HFL_N
I
HFR_P
I
HFR_N
I
(J6)
FM_AUD_LOUT
FM_AUD_RIN
I
O
FM_AUD_ROUT
O
FM_AUD_LIN
I
AFML
I
AFMR
I
AUXLP
O
AUXRP
O
ABE_McBSP2_DX/GPIO_112
ABE_McBSP2_DR/GPIO_111
I
O
ABE_McBSP2_FSX/GPIO_113
IO
ABE_McBSP2_CLKX/GPIO_110
O
FM_I2S_CLK
I
FM_I2S_DO
O
FM_I2S_DI
I
FM_I2S_FSYNC
IO
Figure 14 – Panda Audio Interface Block Diagram
2.15
USB Interfaces
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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